- OR condition in Regex - Stack Overflow
For example, ab|de would match either side of the expression However, for something like your case you might want to use the ? quantifier, which will match the previous expression exactly 0 or 1 times (1 times preferred; i e it's a "greedy" match) Another (probably more relyable) alternative would be using a custom character group:
- How to match, but not capture, part of a regex? - Stack Overflow
The key observation here is that when you have either "apple" or "banana", you must also have the trailing hyphen, but you don't want to match it And when you're matching the blank string, you must not have the trailing hyphen A regex that encapsulates this assertion will be the right one, I think
- regex - Python extract pattern matches - Stack Overflow
import re s = #that big string # the parenthesis create a group with what was matched # and '\w' matches only alphanumeric charactes p = re compile("name +(\w+) +is valid", re flags) # use search(), so the match doesn't have to happen # at the beginning of "big string" m = p search(s) # search() returns a Match object with information about
- If two cells match, return value from third - Stack Overflow
=INDEX(B:B,MATCH(C2,A:A,0)) I should mention that MATCH checks the position at which the value can be found within A:A (given the 0, or FALSE, parameter, it looks only for an exact match and given its nature, only the first instance found) then INDEX returns the value at that position within B:B
- Excel MATCH() function always giving #N A - Stack Overflow
Super simple match, looks like this: =MATCH("Team", A1:A25,0) The data in A1:A25 is imported from a text file The cells are formatted as text If I go into the column and manually type "Team" into the cell that already says "Team", then it will work But unless I manually type it in, it says #N A What is wrong with this?
- regex - Matching strings in PowerShell - Stack Overflow
I'm trying to match the file names against the recorded names in my CSV file It generally works, but sometimes I get incorrect matches Let's say I have two files that start similarly, Apple and Apple_Pie Apple will match to Apple and move to the right directory, but Apple_Pie will first match to Apple and move to the wrong directory
- How can I compare two lists in python and return matches
A quick performance test showing Lutz's solution is the best: import time def speed_test(func): def wrapper(*args, **kwargs): t1 = time time() for x in xrange(5000): results = func(*args, **kwargs) t2 = time time() print '%s took %0 3f ms' % (func func_name, (t2-t1)*1000 0) return results return wrapper @speed_test def compare_bitwise(x, y): set_x = frozenset(x) set_y = frozenset(y) return set
- Regex: ignore case sensitivity - Stack Overflow
G[a-b] * i string match("G[a-b] *", "i") Check the documentation for your language platform tool to find how the matching modes are specified If you want only part of the regex to be case insensitive (as my original answer presumed), then you have two options:
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