Top "Match" questions

Regex Group in Perl: how to capture elements into array from regex group that matches unknown number of/multiple/variable occurrences from a string?

In Perl, how can I use one regex grouping to capture more than one occurrence that matches it, into several …

regex perl grouping match

Excel: Check if Cell value exists in Column, and return a value in the same row but different column

After checking if a value exists in a column, I want to return the value of the cell in the …

match excel-formula vlookup

Case insensitive search in Mongo

I am using a case insensitive search in Mongo, something similar to https://stackoverflow.com/q/5500823/1028488. ie I am using …

regex mongodb pattern-matching match case-insensitive

R - Add a new column to a dataframe using matching values of another dataframe

I am trying to fill in table1 with matching val2 values of table2 table1$New_val2 = table2[table2$pid==table1$…

r dataframe match

Display only the n'th match of grep

onefish onechicken twofish twochicken twocows threechicken What if I want to grep for lines containing "two", but I only want …

bash grep pattern-matching match

Dictionary keys match on list; get key/value pair

In python... I have a list of elements 'my_list', and a dictionary 'my_dict' where some keys match in …

python list dictionary match key

Regex Match any string powershell

No matter how well I feel like I know regular expressions, they always seem to beat me. I am looking …

regex parsing powershell match

How to match an empty dictionary in Javascript?

From the node REPL thing, > d = {} {} > d === {} false > d == {} false Given I have an empty dictionary, how …

javascript dictionary match

Why won't re.groups() give me anything for my one correctly-matched group?

When I run this code: print re.search(r'1', '1').groups() I get a result of (). However, .group(0) …

python regex object match capture-group

In Perl, is there a built in way to compare two arrays for equality?

I have two arrays of strings that I would like to compare for equality: my @array1 = ("part1", "part2", "part3", "part4"); …

arrays perl compare match