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Sanity.
Learning RegExp felt like learning sanskrit or some ancient glyph-language. Really hard to wrap your head around. It's power lies in it's complexity and it can get really fucking complex, especially when you start delving into capture groups, positive/negative lookaheads, different RegExp engines, etc. You take a step back, look at your perfectly crafted RegExp and it looks like some incomprehensible alphabet soup a minute after you write it. Then you test it and it fails some case you hadn't thought of and you're back to square one.
In practice, 99% of the time I need it, I'm doing a simple match/replace.
The other times, I first look up if there is an ISO standard expression for something like checking an email address/telephone number/etc. that's already been tested. (Although email validation is typically handled by a separate process, a simple client-side regexp can knock out 99% of invalid email attempts.)
The dead last thing I do is write my own regular expression.
Here's some resources that have helped me learn since this is /r/learnprogramming :
I find https://regexr.com/ really useful. I type what I want to match (or not as the case may be) and fuck around until it finally works using the sidebar reference to help. Over the years I've gradually got less slow and shit and writing successful regex :)
Hey man, on the off chance you don't know about it, I'll just drop this here. It's super helpful. You can also paste in your regex and it will really help break down why it's not working.
regexr.com explains what each part means in the expression you give it and if you type something in the paragraph box it lists / highlights matches for your expression. It's my go-to for debugging an expression
I find RegExr very handy to do stuff like that. It properly highlights and explains each part of it and has a handy real-time evaluation where you can see how it acts on strings.
I use https://regexr.com/ to validate/test regex syntax.
It sounds like you're trying to tackle a spam issue with Exchange transport rules. What are you using for spam filtering? That seems like a more appropriate place to fix the issue (at least as well as it can be fixed).
Are you at least using SPF for the client?
>I have a rule in this client's exchange already, looking for emails incoming from their domain but from outside the organization, and that doesn't seem to be blocking these coming in.
Are they actually from your domain, or do they just show the display name of the employees. We get emails "from" Billy Bob, but the actual email address is .
? means 0 or 1. Said differently: once or none at all. But *? means something slightly different in regex.
Use a regex builder like https://regexr.com/ (also checkout the cheat sheet) to see the difference visualised.
Here is a stackoverflow answer on *?:
https://stackoverflow.com/questions/3075130/what-is-the-difference-between-and-regular-expressions
*? is what they call a lazy quantifier. It will match as few characters as possible. eg:
Searching in 101000000000100
1.*1 will match 1010000000001 while 1.*?1 will match 101.
Also the use and meaning of ? varies. eg:
(?:abc) non-capturing group (?=abc) positive lookahead (?!abc) negative lookahead
Good work getting this far, but I think you're overcomplicating this a little. To match all contiguous alphabetic characters in a row, all you need is "/[A-z]+/". "+" means one or more of the preceding character. So put together that should be:
str.replace(/[A-z]+/g, "STUFF\$&")
There is a really helpful website called https://regexr.com that makes it really easy to play around with them. Here is your example:
Hey, I'm pretty new to this, but maybe this will help someone, or maybe someone can simplify my process. I went to that sirus20x6 link, saw a bunch of movies, thought it would be nice to have those, so I saved the web page, then opened that with a text editor, and took that garbled mess over to regexr.com and regexed it into just a series of links. Then I took that and saved it to a text file. Then I uploaded that text file to *my* seedbox, and just hit wget -i <file> to download everything from that directory without using my local internet. Seems pretty clean and functional. You guys are totally gonna tell me there's just a program that does that, aren't you?
I think regex just always chooses the first option because every number is in between 0-9. With this you don't limit it to search for 1 digit. (you also haven't specified where the beginning of the string is or if there is a white space)
You basically select every number ever. (example)
If you want it to only select 1 digit set boundaries like here.
I made your regex work with this trick here. (And i don't know any better way to do this since i'm a beginner myself)
This should do something along the lines of what you want, though I am not sure if it is the best way. This would fail if you ever had a ')' that you also wanted to keep that is inside the "WhatIWant", or if there were two }} in a row that was not the end of the structure.
$input -replace '{{collapse((.?))[\s\S]?}}', '$1'
A good place to test / learn regex is a site called RegExr. With PowerShell it is important that the '$1' is in single quotes (if you want to use double quotes then you need to escape the $ with ` , a back tick) to prevent it from being treated like a PowerShell variable.
The above regex with match the {{collapse\( that begins the structure, then match and create a capture group of anything inside the two \(\), then match anything between that until it runs into two }} in a row right next to each other. Then the replace command will take that match and replace it with the first, $1, capture group.
> 1B:[0-9A-F]{8}:NAME:[0-9A-F]{4}:[0-9A-F]{4}:007E:[0-9A-F]{4}:[0-9A-F]{4}:[0-9A-F]{4}:
It's Regex, you can learn more about regex here: https://regexr.com/.
To create act triggers you check the log (There should be an Inspect log/search log button if you rightclick an encouter), find the corresponding line and create the trigger.
I just did the search now and, well, there's good news and there's bad news.
The good news is despite the hundreds of events, there's only three instances of add_trait = crowned_by_bishop
The bad news is none of those seem to fire on game start.
Doing an additional search across the whole game folder for (\W|^)crowned_by_bishop(\W|$) (Which is fancy regex to reduce false positives) you only get 89 results, which just skimming through by eye don't look at all relevant to this situation...
Unfortunately that leads me to conclude that this might be a hard-coded (i.e. not-moddable) part of the game...
That line takes the server output and pipes it to grep, sort and tail.
The regex used in grep [0-9.]+[0-9] can't be literally anything as you suggest, it's catching a specific numerical pattern. See this sample output I just posted at regexer
You’re looking for ‘(.)\1’
The . matches any character. The () make a capture group, meaning whatever is inside can be referenced later. The \1 references whatever was captured in the first capture group.
In summation, this will match any character with the same character immediately following it.
The website https://regexr.com is extremely useful any time you’re working with regex.
I've found regex beginners guides to be almost universally unhelpful because of the complexity and variety of use-cases involved. regular-expressions.info isn't bad as an overview and I use regex101.com for building/testing. Some people swear by regexr.com but I can't get on with it.
Use a tester like this. Note that you don't need to escape the backslashes (e.g. use \b instead of \\b).
Because you want to separate on more than whitespace, you're going to have to change the \b to [^A-Za-z]+ -- at least one non-letter -- or word boundary, and then use a capture group to on the actual pattern you want to match.
Another (probably better) strategy would be to replace non-letters up front with spaces -- since you don't care about them anyway -- and then use the a regex with a word boundary to parse them.
You could do something like this:
import re
phrases = (
"bla bla how is Aron today, Han bla",
"bla bla how is njoj today, alb bla",
"bla bla how is Bob today, alb bla" # this won't match as Bob is 3 characters long
)
matcher = re.compile(r"how is ([A-z]{4}) today, ([A-z]{3}) ")
for phrase in phrases:
matches = matcher.search(phrase)
if matches:
print("First name is", matches[1], "second name is", matches[2])
else:
print(phrase, "does not match the pattern.")
Using the re module we define the pattern that we are looking for, which is how is ([A-z]{4}) today, ([A-z]{3}). This includes two groups (in regular expressions, those are the things surrounded by brackets).
When we perform the search doing matcher.search(phrase), we get back either None if the pattern doesn't match the phrase, or three groups:
matches[0]is the full thing that the pattern matched, if it did.matches[1]is the first thing in brackets that the pattern matched in the phrase.matches[2]is the second thing in brackets that the pattern matched in the phrase.
So if the pattern matched the phrase, we get the two names as matches[1] and matches[2].
To learn more about regular expressions I'd recommend trying out the site https://regexr.com
Well, first you'll need to brush up a bit on regular expressions... https://regexr.com should be your favorite tool :) know that it's there now, but then go and install....
Triggernometry is an ACT extension that makes pretty much anything imaginable possible. Plus it's got a discord channel for questions! I'd make a couple basic chat triggers and then move on into Triggernometry as it provides all the basic function and far more.
No better way to learn than doing, so...
For your first trigger make one that uses TTS to say "ouch!" whenever "That hurt!" appears on a line (hint: use /echo in-game to test triggers!).
Then make one that beeps when your retainers sell an item on the market board. (Pretty easy, a couple of regular expressions).
Then create one that uses TTS to announce the name of the item that sold (more complicated, references and maybe variables!)
Then create one that triggers on use of your favorite cooldown (Lucid Dreaming? Blood for Blood? anything) and starts a timer and then announces near the end of the timer that your CD is up soon (easy expression with timer fun!)
Then see if you can catch any text with your name in it in tell format >> Yourname Here, and then... do something fun with it :) log it in a file, TTS the message, all kinds of options.
Before FFlogs was around I made cooldown trackers so I could see which tanks forgot to put on CDs before the big tankbuster because, well, lots of wipes caused by this. Not even using Triggernometry you can have trigger-captured items stored in tables. "Oh no you did NOT use hallowed ground don't even pretend." etc.
The possibilities are nearly endless :) PM me if you have specific questions!
I just put my input in the Text block and type random characters into the Expression block until I get what I want
But seriously, I've used that site a fair amount and it's been very helpful. I know the basics, but I can't remember all the rules off the top of my head since I don't use it every day.
My strategy is to use an online regex helper. Regexr is my favourite, but it's just the one I tried first. Has a list of every rule, and you can just shove your example input on the bottom and build your regex string on the page.
Lots of ways to do this.
So if you wanted all 3 letter words that contain "abc":
grep -o '\b...\b' test.txt |grep abc
On the other hand if you want all 5 letter words that contain a,b, or c:
grep -o '\b.....\b' test.txt | grep [abc]
note the number of periods represent how many characters your words are.
I always forget regex syntax and have to look it up when I use it. I really like this site for tweaking my regex / having as a cheatsheet: https://regexr.com/
Keep a cheatsheet handy. Having a place you can test it live really helps (I mostly use them in JetBrains' IDEs in complex find and replace operations, so I can see what matches live as I edit the expression; otherwise something like https://regexr.com/ is nice).
Edit:
I see someone beat me to the link, but I'll keep it here as a kind of +1
Try this: ^([A-Z0-9]{5}-){4}[A-Z0-9]{5}$
That's basically 4 instances of XXXXX- and one last XXXXX, where XXXXX is uppercase, alphanumeric.
EDIT: https://regexr.com/ is a good site for building/testing regex.
Basically if the input RegEx matches, the signal is sent.
The component uses regular C# RegEx matching criteria. https://docs.microsoft.com/en-us/dotnet/api/system.text.regularexpressions.regex.match?f1url=https%3A%2F%2Fmsdn.microsoft.com%2Fquery%2Fdev15.query%3FappId%3DDev15IDEF1%26l%3DEN-US%26k%3Dk(System.Text.RegularExpressions.Regex.Match);k(SolutionItem...
Can also learn some basic RegEx here. https://regexr.com/
RegEx is NOT game specific.
Everyone stand back! I know regular expressions.
These are ways of defining a pattern of text. Utilities like sed or editors like vim let me use a command like s/some pattern/some other string/ will go through all the text given and replace the first instance that matches some pattern with some other string. If I add a g after the second /, it will replace all instances, not just the first one.
There's some web utilities that let folks play around with this interactively, if you'd like to learn more this useful skill.
Regexes aren't hard to learn, it is just practice like any other skill. Don't beat yourself up for not knowing them. A good resource I use frequently is regexr which lets you quickly iterate on regexes as you type them to figure out the pattern you need.
Like any skill the more you use them, the better you get.
Your exact question isn't really clear, but if you need a regex code then try designing it on this site:
I guess you are talking about the Wordpress search feature? There are some good examples in the default themes in the 404 and search pages to deal with terms that are close but not quite exactly what was input in the search.
Not quite. Regex is a whole topic on itself. I'd recommend going to one of the many regex sites that will allow you to test an expression and see what it's picking up, and they usually help you by explaining that the regex is doing.
Try https://pythex.org/ or https://regexr.com/
This one uses regexr.com on your example [^\w\s]
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It's taking a string value and replacing regular expression pattern matches. The regex patterns are the arguments that appear within and around slashes (/(\d{4})/g). You can copy a pattern to an online tool to see what it does.
For instance, the first replace method matches all occurrences (g) of four ({4}) digits (\d) and captures each occurrence in a group (()). It then replaces each occurrence with the first and only capture group ($1) and a space.
After, the replace method is called two more times on the result of the first call. You can look up what they do.
I think you want to leave off the '*'.
You might consider using a text pattern instead. ("The recipient address matches any of these text patterns"). Here's a site I use to work out a correct regex string:
First you'll need to define what a paragraph is in terms of what patterns to look for in whichever file you're looking at. For example, a paragraph could be where there's an empty line between lines of text. In this case, you'd start by looking for two new line characters in succession: \n\n. But it all depends on your definition of a paragraph in this context. In addition, I recommend checking out https://regexr.com for practicing with search patterns if you want to search for paragraphs using regular expressions.
Plug your Regex into https://regexr.com/ and you'll get a clearer picture of what's happening.
Your regex right now is allowing any character between a-z, 1 or more times, and then any digit, 0 or more times. The $ is then expecting the string to end, so if you have a string with letters, numbers, and then more letters, it's not going match, because we've already reached the end of the expression.
If you want to match 1 or more of any characters and numbers, you're probably looking for [a-z\d]+. See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions for more information and examples.
> type: submission
> ~title (regex): \d+\s[.+]\s#.+\s-\s.+
> action: remove
> comment: |
> Hello! Your post was removed because it does not follow the posting format required for the subreddit. Please copy and paste this format " Age [x4x] #City - Title " and resubmit your post . Please see this post for the guidelines. If you feel this message is in error please contact the mods. Thanks!
If you put that regex code into https://regexr.com/ it will tell you what all it means. It's essentially enforces posts to look like this "22 [r4r] #city - title". The ~ next to title means that instead to take action if the action would trigger with the title looking like that, the action triggers when it doesn't conform to the title rule, and then it also leaves that comment on the removed post.
It's one thing we use in /r/SocalR4R to make things more orderly.
https://regexr.com is all you need imo. Paste in what you're working on. Look at the cheat sheet. Mess around till you get what you want.
I use regex an unhealthy amount because just about everything supports it. I'd argue it's one of the most important things to know if you're doing a lot of data analysis. Data's usually a mess.
post_id=url[-url[::-1].find('/'):]
Using a regular expression to find the id might be more stable. Being a regex noob myself I always go back to regexr to build the expression.
if not os.path.isdir(data_folder): os.mkdir(data_folder) # is same as os.makedirs(data_folder, exist_ok=True) # but well..
Instead of using a "dones.txt" I would pickle dump a set (rather than a list). The lookup time in a set is insanely faster and with pickle you don't need to parse anything.
The "extract_post" function is too long. Either split it up or give it some headline comments on what will happen in the next 10ish lines.
Avoid magic variables
[('User-agent', 'Mozilla/5.0')] # line 26 and 180
Also all kinds of numbers and filenames. Declare them at the top, or in a config.py.
Adding to this, teaching yourself how to use regular expressions! It might seem really technical at first, but being able to search and replace any pattern of characters can save so much time. There's a website called RegExr that teaches and helps you build them in real time, and you'll feel like a wizard when it works.
I messed with that kind of concept myself for some time, though i only used it for switching between 2 guns on each side of a corner. Don't have a lot of experience in it, but perhaps some things i learned could be useful for you. I suggest using a range instead of an integer, since the game seems to have a tendency to skip the number you set in the expression if you are moving the mouse too fast. For example, the expression ^(1[3-7][0-9](\.[0-9]*)?)$ would trigger the component whenever your aim enters the range between 130 and 179.9999... degrees. That would also make you able to switch to the gun directly on the opposite side(though it's a big buggy without a delay). There is a pretty helpful website for making and testing regular expressions: https://regexr.com/. Also, connecting the periscope to a text display could help you set the range more precisely.
If you just want to learn regex and do it yourself, this site is awesome:
The paragraph will show you what the regex matches will be.
You can paste you own text in there to test.
If you click cheatsheet on the left it gives an overview of basic regex
For Regex, start with IYN(\d[^K])*. >!You can immediately fill in three characters!< and>! have a pattern for the remaining 8.!< Then look at >!its intersection with [7EF]*!<.
This may help you - >! https://regexr.com/!<
try this at your own risk
*edit: please see below comment from /u/Umaiar. ¡muy importante!
-match uses regular expressions, so you'll need to set $versionarray appropriately
if you only want the first number to match, then try this
$versionarray = '^' + ((13..20) -join '|^')
# output # ^13|^14|^15|^16|^17|^18|^19|^20
and because it's no longer an array, you might want to rename the variable to $versionregex or something
if you don't include the ^, it will match against the number in any part of the folder name, so both of these would have been deleted in your example because they contain '20'. with the ^ it only checks starting from the beginning
>18.172.0920.0015
>18.172.0920.0015_1
Yes! Regex is an extremely powerful tool with a wide variety of applications. Even if you don't employ them in your code directly, they can be extremely useful for tasks such as code refactoring. Learning regex is also super easy - the syntax may look cryptic at first, but once you overcome the initial learning curve, it is really quite simple. Also, there are a ton of tools that make learning and using regex a breeze, such as regex101.com and regexr.com.
According to regexr, the difference is that the ? in .*? makes it "lazy". Here is the description:
> Lazy
>Makes the preceding quantifier lazy, causing it to match as few characters as possible. By default, quantifiers are greedy, and will match as many characters as possible.
The reason I had to keep the ? in the last .*? in my compressed expression is because it being greedy interfered with the r(.) part.
A really good resource for learning regular expressions (very useful if you work with strings a lot) is https://regexr.com/. It also has a very useful debugging tool.
As a new Matlab user, you may find the number of functions daunting, but Matlab's documentation is one of the best of any coding language around. If I have a specific coding problem which I think someone else has used before, I always google "matlab [description of problem]". Try to keep the description as general as possible when looking for solutions and you'll be more likely to find someone who has solved a similar problem to yours.
For example, if I were looking for a solution to the problem posed here, I would have googled "matlab modify string at specific substring".
So I took a 3 year advertising program in college, then 6 month web design and development shortly afterwards, then landed a job in an advertising/product development agency, then a PPC company. The web dev program covered HTML and CSS, then deeper a bit into some database stuff.
Professionally, I never really used any of the web dev aside from having more of an understanding of what the development team was talking about (although when they really got into it, I had no idea what the fuck they were talking about).
If you learned the basics of HTML, CSS and regular expressions, you'd be totally fine. You're not going to be building websites - you'll be setting things up in Google Ads and Analytics and installing code snippets through Google Tag Manager, which is pretty straightforward. The code knowledge would help you do some deeper functionality (for example, some of our client inventory services we'll dig into a website data layer) and maybe make a few things a bit more clear, but honestly I think it's probably one of those things that you could get away with not being an expert in as long as you were aware of its existence and capabilities, and how to Google for the solutions you'll need. Like Excel - for most standard users, you don't need to be an expert - you just need to be able to find and understand what the experts are talking about.
BTW, when doing gnarly things with regexes (or even relatively simple things), it can be handy to use a tool such as regex101 or regexr or regextester - more immediate feedback really helps when debugging!
>(\d+) ([\w ]+)
You don't need to put the \w character class inside another character class. Also, the pattern will skip subsequent words in the item description. You'd need to capture all words without digits.
/u/stoirtap, this would better suit your needs.
(\d+)((?:\s?\D+)+)
Use the following: (?:@[domain_regex]) This (?:) forms a non-capturing group.
\b[-a-zA-Z0-9.]+(?:@[-a-zA-Z0-9.]+.(?:de|es|cz|fr|uk))\b
I’m not sure where to view it on regex101 but if you test out the example in https://regexr.com/ it will show in the bottom Tools section what are the capture groups and what are just matching groups (they also have a super-handy cheatsheet on the sidebar).
I’d paste it myself but it seems regexr doesn’t have mobile browser support.
You're going to have a hell of a time parsing an .rtf file using regex. Open the file in Notepad or any other simple text editor to get a feeling for what you're dealing with, it's anything but plain text.
https://regexr.com/ is a fantastic resource for learning how to use regex. Paste a chunk of the file in and see if it matches up with what you're getting as a result.
If you want specific help you'll need to put a chunk of the file on pastebin or something similar so we can see the actual text you're matching against. An explanation of what you're trying to do with the regex would be good as well.
Então JGGruber, provavelmente estamos falando de coisas totalmente distintas.
O padrão de seleção do MySQL, realmente funciona desse jeito! Mas eles não são baseados em expressões regulares (RegEX). RegEX são basicamente expressões padrões para seleção de texto e estão presentes/suportadas em quase todas linguagens.
Caso você queira brincar um pouco e checar os operadores o website https://regexr.com/ explica um pouco delas - é uma ferramenta muito útil para filtrar não só ocorrências de texto, mas também validações de CEP, combinações específicas de caracteres etc etc.
Think about it,
You're matching a group of 0 or more (*) letters that doesn't contain your separators ([^/.?]) and then you're matching any of your separators or the end of the string ($).
Hint: It's good to think about the end of the string as if it was a character. Use a parenthesis and OR alternators to group together your separators and the end of the string
Here's my solution: https://regexr.com/3rs43
The explain tool on the page shows how the expression works
It's okay, I found a solution, by using the boolean | to differ between formats. I know that it's a horrible solution but that's all what I got:
(1\s)|(\([0-9]{3}\)|[0-9]{3})(\s|-)?[0-9]{3}(-|\s)?[0-9]{4}
Anyway, a new problem has appeared, now it matches any thing even with anything other than the optional 1, even if it was 2 or 3, it will still match it, as you see here:
I want it to match only if it is 1 or not. I don't want it to match 2 xxxxxxx or 3 xxxxxxxx, either with 1 or not match any other number in its place.
Any solution please? I'm almost going crazy because of this regex thing, when I fix something, a new problem appears.
You can do also do the same with regexr. I personally find the interface to be cleaner and the explanations better. Here is a regexr-mirror of what you posted on regex101.
Doesn't make a difference...
So i have this line i believe i have it
testing the regex
testing website: https://regexr.com
1 Raw_Read_Error_Rate 0x000b 100 100 016 Pre-fail Always - 0
I used the following regex to get the last digit
\d$
Might post to zabbix since that's the environment I'm using for smartctl. Just using this forum as a platform to share
I would highly recommend checking out RegExr if you haven't already. It lets you play around with regex in real-time, which is great for both learning and building complex expressions. The reference and cheat sheet in the sidebar are also really helpful.
You can use \s to represent whitespace. This will capture pretty much any combination of whitespace, including newlines, spaces, tabs, etc. Note that in Java you will actually need to escape the \ or it will treat it like an escape sequence. So \\s.
Also https://regexr.com/ is worth checking out. The cheat sheet is really good for questions like this, and you can feed test inputs in to easily test if your regex is actually capturing what you want it to.
it's very simple find and replace using regex (aka regular expressions)
find string matching the following pattern: [aeiouy]
replace with: •
Try it yourself using the original copypasta!
Here's a fun little game involving regex if you're interested
So after spending 5 minutes on this, I realized that I really am just rewriting the egrep command. /u/Aughu is right
Just jump on a linux box or download cygwin for windows and use the following format.
I downloaded this words file from Github: https://raw.githubusercontent.com/dwyl/english-words/master/words.txt
Then you use the egrep command like so:
egrep "^[s|p][t|u][r|p][i|p][n|e][g|t]$" words.txt
And I got
puppet string
Basically, you do
egrep "^[optionA|optionB]$"
The ^ symbol says to not include any characters before option A. The $ symbol says to not include any characters after the option B.
You then use the [optionA|optionB] format for each letter group.
I don't know if you are familiar, but these are called regular expressions. Here is a website where you can play around with them. https://regexr.com/
Also I have to work through lunch ︵‿︵(´ ͡༎ຶ ͜ʖ ͡༎ຶ `)︵‿︵
Kuna lähtekoodis oli kirjas kommentaar Kui keegi loeb mu koodi, siis jah ma olen õudne progeja, siis ma hariduslikul eesmärgil tegin selle põhjal näite, kuidas sama asi palju vähemaga teha.
Asendasin jQuery skripti javascripti enda fetch()-iga ja stringide parsimise regulaaravaldistega (regular expression). Regulaaravaldisi saad testida regexr.com peal, soovitan tundma õppida, väga kasulik asi.
TLDR; Focused on the wrong things in programming, missing the forest for the trees, and online tools to help you play with regex
Unfortunately it sounds like you are focused on memorizing the wrong things, it is a mistake I have seen in people first learning programming. I liken it to those who in math class mistakenly memorize the problems in the book, instead of learning how a trig function works and the ways to apply it.
You need to learn what the tools are, the basic functions that make up a programming language, how to write functions, variables, define classes, all in the name of being able to understand a program and make a program do what you want it to, not all the individual letters and symbols of each function.
A huge part of programming is being capable of locating and using information of a function or capability in your programming language. After you get experience you will start to retain more in your mind naturally.
In regular expressions (regex) you only need to remember that you are looking at the directions (pattern) on how to match specific text. At a minimum you should grasp wild cards + character classes(what to match), quantifier (how many times to match), capturing groups (for using matched text in replacements)
Check out some online regex testers, be sure to play around. https://regex101.com/r/WdvO8B/1 (has specific example of matching all words that start with a Capital letter) https://regexr.com/ https://www.regextester.com/
I used to be a perl programmer and use regex... regularly. It's just not the first tool I go to when trying to solve a problem. I usually end up on sites like https://regexr.com/ trying to puzzle out why it's working or not. To really date myself, Regex (to me) is like the super suit from Greatest American Hero. I "lost" the manual and only know how to do a handful of things. None of them well.
The two absolute best were already listed here which currently tower over all others:
https://regex101.com https://regexr.com
Even though these are really the best TESTING sites, they also do such a good job of translating the PIECES of whatever regex you are testing (including simply picking from their enormous libraries of canned regexes), that simply USING these sites and paying attention to the dissection I have found is the best teacher of all.........
Anchors are symbols that match the beginning or end of a line. This way you could force the regex to only match the left-most name.
But a cleaner way would be to simply include the brace as part of the match. This guarantees it'll only match the first entry in the list because no other entry will have a { before it.
{\"(.+?)\"
I highly recommend this site to learn and practice regexs.
yeah my code can space out your system info. Just replace "Foobar one" with whatever functions you want.
Regular expressions are really useful, but hard to master. If your interested in learning it, try this website. I recommend looking at the cheatsheet, and also substitution and Groups & Lookaround under the reference section.
here's a quick explanation of what my code is doing:
"(.)" creates a capture group with the parentheses. The '.' within represents almost any character (does not represent newlines and tabs). "$1 " says to keep the (1st) capture group (in this case there's only one), and add a space behind it. Those two fields work together to convert "Foobar one" to "F o o b a r o n e "
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