Category: Regexp

Regular expressions, also known as regular expressions. (English: Regular Expression, often abbreviated as regex, regexp or RE in the code), a concept of computer science. Regular tables are usually used to retrieve and replace texts that conform to a certain pattern (rule). Many programming languages support string manipulation using regular expressions. For example, a powerful regular expression engine is built in Perl, and the Java language comes with it. The concept of regular expressions was first popularized by tools in Unix (such as sed and grep). Regular expressions are usually abbreviated as “regex”. The singular includes regexp and regex, and the plural includes regexps, regexes, and regexen.

Floating point regular expression between 0 and 1

I am trying to verify the input of floating-point numbers, where the maximum value is 1.0 and the minimum value is 0.

Min: 0
Max: 1 Possible value;

0.1
0.99
0.365 How can I succeed wit

October 18, 2021By Simo Regexp between 0, expression, floating point, regularLeave a Comment

Regular expression – What is the best way to verify the URL input by the user in the Cocoa application?

I am trying to build a self-made web browser in order to become more proficient in Cocoa. I need a good way to verify whether the user has entered a valid URL. I have tried some regular Expressions

October 18, 2021By Simo Regexp application, best, Cocoa, expression, input, method, middle, program, regular, URL, user, verification, whatLeave a Comment

Regular expression – there is no slash

How will I make this rule so that you can access it with and without slashes?

RewriteRule ^members/([^/]+)$members.php?id=$1 [L] RewriteRule ^members/([^/]+)/?$members.php?id=$1 [L] Just a

October 18, 2021By Simo Regexp expression, no, regular, slashLeave a Comment

Regular expression greedy

I’m sure this is easy, but I tried many changes, but still can’t meet my needs. Things are too greedy, I can’t make it stop greedy. Given the text:

test=this=that=more text follows I want to

October 18, 2021By Simo Regexp expression, greed, problem, regularLeave a Comment

Generate a directory outline of an article with a regular expression

In the projects we are doing, it is often involved in the image processing of the article (the base64 image is saved on the server and converted to the image link of the server), and the use of h1,

October 18, 2021By Simo Regexp articles, build, catalogs, expressions, outlines, regularLeave a Comment

Regular expression – How to use an abnormal wildcard in Bash?

See answer in English> Automatically ignore files in grep 6
I want to grep multiple files in the folder. In addition to large files like pcap files and gziped files, I want to render them a lot. So