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Test if a variable is set in bash when using “set -o nounset”
...(x86_64-redhat-linux-gnu)
$ set -o nounset
If you want a non-interactive script to print an error and exit if a variable is null or not set:
$ [[ "${HOME:?}" ]]
$ [[ "${IAMUNBOUND:?}" ]]
bash: IAMUNBOUND: parameter null or not set
$ IAMNULL=""
$ [[ "${IAMNULL:?}" ]]
bash: IAMNULL: parameter nul...
Get Substring between two characters using javascript
...plit()
var s = 'MyLongString:StringIWant;';
var arrStr = s.split(/[:;]/);
alert(arrStr);
arrStr will contain all the string delimited by : or ;
So access every string through for-loop
for(var i=0; i<arrStr.length; i++)
alert(arrStr[i]);
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What is the proper way to check for existence of variable in an EJS template (using ExpressJS)?
...t a bigger problem on my hands. This throws a Reference Error too: <% alert('test'); %>
– Aashay Desai
Mar 21 '11 at 0:34
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How to extract extension from filename string in Javascript? [duplicate]
...astIndexOf() as opposed to indexOf()
var myString = "this.is.my.file.txt"
alert(myString.substring(myString.lastIndexOf(".")+1))
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Calculate relative time in C#
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Seb, If you have Javascript disabled, then the string you originally put between the abbr tags is displayed. Typically, this is just a date or time in any format you wish. Timeago degrades gracefully. It doesn't get much simpler.
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multiple prints on the same line in Python
I want to run a script, which basically shows an output like this:
17 Answers
17
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What is the difference between `git merge` and `git merge --no-ff`?
...@github.com:me/mywebsite.git
8a0d9ec..333eff5 master -> master
Script for automating the above
Having used this process 10+ times in a day, I have taken to writing batch scripts to execute the commands, so I made an almost-proper git_update.sh <branch> <"commit message"> scr...
How to get screen width without (minus) scrollbar?
..., html').css('overflow', 'visible');
var screenWidth2 = $(window).width();
alert(screenWidth1); // Gives the screenwith without scrollbar
alert(screenWidth2); // Gives the screenwith including scrollbar
You can get the screen width by with and without scroll bar by using this code.
Here, I have ch...
Why are Oracle table/column/index names limited to 30 characters?
...b.andrew.cmu.edu/~shadow/sql/sql1992.txt , but if you read section "17.1 Description of SQL item descriptor areas" it says identifiers like names and schemas must allow at least 128 characters.
– Rick
May 4 '11 at 19:43
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Creating a jQuery object from a big HTML-string
...eHTML('<div><input type="text" value="val" /></div>'));
alert( dom_nodes.find('input').val() );
DEMO
var string = '<div><input type="text" value="val" /></div>';
$('<div/>').html(string).contents();
DEMO
What's happening in this code:
$('<div/>')...