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I have a list of variables:
variables = ['VariableA', 'VariableB','VariableC']
which I'm going to search for, line by line
ifile = open("temp.txt",'r')
d = {}
match = zeros(len(variables))
for line in ifile:
emptyCells=0
for i in range(len(variables)):
regex = r'('+variables[i]+r')[:|=|\(](-…
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I was looking at the regular expression for validating various data types from the (OWASP Regex Repository).
One of the regular expressions in there is called safetext and looks like:
^[a-zA-Z0-9\s.\-]+$
My first question is:
Is this regular expression correct?
complementary question
If this…
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I am writing a tool to help students learn regular expressions. I will probably be writing it in Java.
The idea is this: the student types in a regular expression and the tool shows which parts of a text will get matched by the regex. Simple enough.
But I want to support several different regex…
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I'm writing a piece of client-side javascript code that takes a function and finds the derivative of it, however, the regex that's supposed to match with the power rule fails to work in the context of the javascript program, even though it sucessfully matches when it's used with an independent regex…
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I need to be able to check for a pattern with | in them. For example an expression like d*|*t should return true for a string like "dtest|test".
I'm no regex hero so I just tried a couple of things, like:
Regex Pattern = new Regex("s*\|*d"); //unable to build because of single backslash
Regex Pattern…
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Hi all,
I am up to my neck in regular expressions, and I have this regular expression that works in javascript (and flash) that I just can't get working in PHP
Here it is:
var number
= '(?:-?\\b(?:0|[1-9][0-9]*)(?:\\.[0-9]+)?(?:[eE][+-]?[0-9]+)?\\b)';
var oneChar = '(?:[^\\0-\\x08\\x0a-\\x1f\"\\\\]'
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I have a text source with nulls in it and I need to pull them out along with my regex pattern. Can regex even match a null character?
I only realized I had them when my pattern refused to match and when I pasted it into Notepad++ it showed all the null characters.
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Hi guys, i have this C++ program (actually it's just a snippet) :
#include <iostream>
#include <pcre.h>
#include <string>
using namespace std;
int main(){
string pattern = "<a\\s+href\\s*=\\s*\"([^\"]+)\"",
html = "<html>\n"
"<body>\n"
…
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Hi all,
I've got the following regular expression that works fine on my testing server, but just returns an empty string on my hosted server.
$text = preg_replace('~[^\\pL\d]+~u', $use, $text);
Now I'm pretty sure this comes down to the hosting server version of PCRE not being compiled with Unicode…
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a ip or other string, like "11.22.33.44" or "aa.bb.cc.dd". basically, I think it is very easy, (([\d\w]+)+\.)+[\d\w]+
but the problem is which group these submatches are in. not like ip, some string is consist of lots of words+separate
in pcre, I don't know how to extract it all words -- "aa bb cc…
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