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“unary operator expected” error in Bash if condition
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506
If you know you're always going to use bash, it's much easier to always use the double bracket ...
What is the meaning of polyfills in HTML5?
...ort CSS3 techniques you want).
Here's a good post:
http://remysharp.com/2010/10/08/what-is-a-polyfill/
Here's a comprehensive list of Polyfills and Shims:
https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-browser-Polyfills
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Modify file in place (same dest) using Gulp.js and a globbing pattern
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edited Nov 27 '15 at 18:02
answered Apr 23 '14 at 15:49
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How do I install an R package from source?
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500
If you have the file locally, then use install.packages() and set the repos=NULL:
install.pa...
Test for equality among all elements of a single vector
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Difference between HEAD and master
... tutorial on git references here:
http://people.gnome.org/~federico/news-2008-11.html#pushing-and-pulling-with-git-1
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How should I read a file line-by-line in Python?
...th open('filename.txt') as fp:
for line in fp:
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fp.seek(0)
for line in fp:
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While this is a less common use case, consider the fact that I might have just added the three lines of code at the bottom to an existing code base which originally had the top three lines...
Difference between git checkout --track origin/branch and git checkout -b branch origin/branch
...d need git checkout -B abranch origin/abranch)
Note: with Git 2.23 (Q3 2019), that would use the new command git switch:
git switch -c <branch> --track <remote>/<branch>
If the branch exists in multiple remotes and one of them is named by the checkout.defaultRemote configu...
How to get first and last day of previous month (with timestamp) in SQL Server
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select DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE())-1, 0) --First day of previous month
select DATEADD(MONTH, DATEDIFF(MONTH, -1, GETDATE())-1, -1) --Last Day of previous month
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Get week of year in JavaScript like in PHP
...uk/js-date6.htm#YWD. Please test thoroughly, no guarantee provided.
Edit 2017
There was an issue with dates during the period that daylight saving was observed and years where 1 Jan was Friday. Fixed by using all UTC methods. The following returns identical results to Moment.js.
/* For a give...