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How to find whether or not a variable is empty in Bash
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In Bash at least the following command tests if $var is empty:
if [[ -z "$var" ]]; then
# Do what you want
fi
The command man test is your friend.
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Moment JS - check if a date is today or in the future
...ardless if time difference is less than 24 hours.
– zanderwar
May 12 '16 at 4:51
3
Not working fo...
How to convert a Django QuerySet to a list
...er(lambda x: x.id not in ids, answers)
Read when QuerySets are evaluated and note that it is not good to load the whole result into memory (e.g. via list()).
Reference: itertools.ifilter
Update with regard to the comment:
There are various ways to do this. One (which is probably not the best on...
Finding the direction of scrolling in a UIScrollView?
I have a UIScrollView with only horizontal scrolling allowed, and I would like to know which direction (left, right) the user scrolls. What I did was to subclass the UIScrollView and override the touchesMoved method:
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ASP.NET MVC 3 Razor: Include JavaScript file in the head tag
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Yes, I was looking at WebPageBase and had guessed that that might be the answer, but didn't quite know the proper syntax. Can you recommended a reference guide for the MVC 3? Regards..
– Stephen Patten
Nov 30 '10 at 13:1...
Mercurial .hgignore for Visual Studio 2008 projects
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Here's my standard .hgignore file for use with VS2008 that was originally modified from a Git ignore file:
# Ignore file for Visual Studio 2008
# use glob syntax
syntax: glob
# Ignore Visual Studio 2008 files
*.obj
*.exe
*.pdb
*.user
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Jquery UI tooltip does not support html content
Today, I upgraded all of my jQuery plugs-in with jQuery 1.9.1. And I started to use jQueryUI tooltip with jquery.ui.1.10.2. Everything was good. But when I used HTML tags in the content (in the title attribute of the element I was applying the tooltip to), I noticed that HTML is not supported.
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How to exclude this / current / dot folder from find “type d”
... because of the !.
To exclude other directories, this will golf less well and requires a variable for DRYness:
D="long_name"
find "$D" ! -path "$D" -type d
My decision tree between ! and -mindepth:
script? Use ! for portability.
interactive session on GNU?
exclude .? Throw a coin.
exclude lo...
Server polling with AngularJS
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Assuming the above code is for pageA and controllerA. How do i stop this timer when I navigate to pageB and controllerB ?
– Varun Verma
Nov 21 '13 at 10:46
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Reasons for using the set.seed function
...ion in R, before starting the program. I know it's basically used for the random number generation. Is there any specific need to set this?
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