I'm using a regular expression to find character entries (e.g. '[any single character]' or '\[any single character]') and I noticed my current regex is missing '\''. Can anyone help me understand why and how to fix it? My current regex is ('.'|'\\.')
I'm writing my program using C++, in case that matters to anyone.
Thanks.
Answer: ('\\.'|'.')
The search wasn't working because it matched the first option - '.'. Switching the order made it try to match '\.' first.
Related
I'm upgrading a Symfony app with VSCode and I have numerous occurences of this kind of string :
#Template("Area:Local:delete.html.twig")
or
#Template("Group:add.html.twig")
In this case, I want to replace all the : with / to have :
#Template("Area/Local/delete.html.twig")
I can't think of doing it manually, so I was looking for a regular expression for a search/replace in the editor.
I've been toying with this fearsome beast without luck (i'm really dumb in regexp) :
#Template\("([:]*)"
#Template\("(.*?)"
#Template\("[a-zA-Z.-]{0,}[:]")
Still, I think there should be a "simple" regexp for this kind of standard replacement.
Anyone has any clue ? Thank you for any hint
You can use this regex with a capture group: (#Template.*):.
And replace with this $1/.
But you'll have to use replace all until there's no : left, that won't take long.
Just explaining a lit bit more, everything between the parenthesis is a capture group that we can reference later in replace field, if we had (tem)(pla)te, $1 would be tem and $2 would be pla
Regex!
You can use this regex #Template\("(.[^\(\:]*)?(?:\:)(.[^\(\:]*)?(?:\:)?(.[^\(\:]*)?"\) and replacement would simply be #Template\("$1/$2/$3
You can test it out at https://regex101.com/r/VfZHFa/2
Explanation: The linked site will give a better explanation than I can write here, and has test cases you can use.
If I try to use a regular expression in Find (F3) it appear not to work:
[T]opic highlights both 'Topic' & 'topic' in my code.
Is my syntax wrong or does VSCode not really do regular expressions (this may be a whole 'visual studio' thing).
Thanks for looking.
Just enable a case sensitive search:
Actually, a character class is not necessary here, you can search for just Topic. A character class is handy when you need to match a single character from a known set, and here, it does not look to be the case.
I have wrote some regex to match the first number in a number of project
^[^£]*£(?:[0-9\.,]+)[^£]*£([0-9\.,]+)
The problem which I am having is that it is not match all occurrences for the first number when they are being parsed below
RRP �50.00 - Now �39.99 // Not working
RRP �45 - Now �38 //Working
I was just wondering what is wrong because I cannot work it out. Thanks for any advice which you can give
Instead of directly specifying a character that might have issue(s) in regex engine to evaluate you may also try using it equivalent code:
^[^\u00A3]*\u00A3(?:[0-9\.,]+)[^\u00A3]*\u00A3([0-9\.,]+)
Not sure it solves your problem, but give it a try.
I have the following string 3}HFB}4AF4}1 -M}1.
I have searched for this string using the regex :
([0-9])(\})([A-Z]{3})(\})([0-9][A-Z]{2}[0-9])(\})([0-9])(\s\-)([A-Z])(\})([0-9]).
I want to replace the } with 0. The Result I am looking for is 30HFB04AF401-M01, any assistance is appriciated. The tool I am using is Regex Buddy
A possible solution
Problem solved? In JavaScript at least :-)
"3}HFB}4AF4}1 -M}1".replace(/\}/g, "0");
// "30HFB04AF401 -M01"
I'm missing the point, right?
Assuming the language is JavaScript, we can write something like
"dfghj456783}HFB}4AF4}1 -M}1fghjkl8765".replace(/(?:[\d\w\s]+)([0-9]}[A-Z]{3}}[0-9][A-Z]{2}[0-9]}[0-9] -[A-Z]}[0-9])(?:[\d\w\s]+)/g, function () {
return arguments[1].replace(/}/g, "0");
});
What's possible in other languages though may be a different story.
Try the home of RegexBuddy for details.
So you've already got an expression to find instances of the string. Now you can either use groups to replace the characters, or you can use a separate regular expression over the string you found, simply replacing the } character within group(0) (which is the entire matched part of the input). I would certainly prefer the latter.
Fred seems to have created the replacement method for you already, so I won't repeat it here.
I have managed to find a solution to the formating in the JGSoft Lanugage used by Regex Buddy, thanks to all that provided suggestions that helped me channel my thoughts in the right direction.
Solution(I am still a beginner with Regex hence the syntax might not be efficent, but it does the job!!)
Using Group Names instead of Regex assiging groups with backreference and $ syntax.
Hence to replace 0 for } in the string 3}HFB}4AF4}1 -M}1 or any similar string. I used the following search and replacement syntax
Search : (?<Gp1>([0-9]))(?:})(?<Gp2>([A-Z]){3})(?:})(?<Gp3>([0-9])([A-Z]{2})([0-9]))(?:})(?<Gp4>([0-9]))(?:\s-)(?<Gp5>([A-Z]))(?:})(?<Gp6>[0-9])
Replace : ${Gp1}0${Gp2}0${Gp3}0${Gp4}-${Gp5}0${Gp6}
Result : 30HFB04AF401-M01
I'm looking for a regular expression that can find and replace all the text "anytext" with "anything" in netbeans, some of the symbols also contain this text. I've done it a while back for a single file but now I want to change everything in my application & I'm struggling to get it right.
Just use find & replace to replace all instances of "anytext" with "anything". There is no difference between this and a regex find & replace, because there doesn't exist a pattern that can be easily exploited using regex. There is no difference in this case. Based on your comment, you still must manualy enter the word you want replaced and a word that will replace it.
I think you have misunderstood a bit what regular expressions are all about.
Were you looking for something like this? Where it wouldn't grab it inside word?
\banytext\b