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Does Git Add have a verbose switch
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136
For some git-commands you can specify --verbose,
git 'command' --verbose
or
git 'command...
How exactly does a generator comprehension work?
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147
Do you understand list comprehensions? If so, a generator expression is like a list comprehens...
Replace a value in a data frame based on a conditional (`if`) statement
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221
Easier to convert nm to characters and then make the change:
junk$nm <- as.character(junk$nm...
Why does the C++ map type argument require an empty constructor when using []?
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165
This issue comes with operator[]. Quote from SGI documentation:
data_type& operator[...
How do I decode a string with escaped unicode?
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108
Edit (2017-10-12):
@MechaLynx and @Kevin-Weber note that unescape() is deprecated from non-br...
RegEx: Grabbing values between quotation marks
...'ve been using the following with great success:
(["'])(?:(?=(\\?))\2.)*?\1
It supports nested quotes as well.
For those who want a deeper explanation of how this works, here's an explanation from user ephemient:
([""']) match a quote; ((?=(\\?))\2.) if backslash exists, gobble it, and wheth...
Open Graph namespace declaration: HTML with XMLNS or head prefix?
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edited Aug 14 '13 at 5:42
Matt Beckman
4,90544 gold badges2626 silver badges4040 bronze badges
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SET versus SELECT when assigning variables?
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417
Quote, which summarizes from this article:
SET is the ANSI standard for variable assignm...
Test whether a glob has any matches in bash
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