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How can I search for a commit message on GitHub?
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Peter Mortensen
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answered Jan 3 '17 at 23:52
vartecvartec
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Most efficient way to prepend a value to an array
...];
a.unshift(0);
a; // => [0, 1, 2, 3, 4]
[Edit]
This jsPerf benchmark shows that unshift is decently faster in at least a couple of browsers, regardless of possibly different big-O performance if you are ok with modifying the array in-place. If you really can't mutate the original array then...
Tool to generate JSON schema from JSON data [closed]
We have this json schema draft . I would like to get a sample of my JSON data and generate a skeleton for the JSON schema, that I can rework manually, adding things like description, required, etc, which can not be infered from the specific examples.
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How do I run a Java program from the command line on Windows?
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Source: javaindos.
Let's say your file is in C:\mywork\
Run Command Prompt
C:\> cd \mywork
This makes C:\mywork the current directory.
C:\mywork> dir
This displays the directory contents. You should see
filenamehere.java among the files.
C:\mywork&...
Remove duplicates from a List in C#
Anyone have a quick method for de-duplicating a generic List in C#?
27 Answers
27
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Haskell: Lists, Arrays, Vectors, Sequences
I'm learning Haskell and read a couple of articles regarding performance differences of Haskell lists and (insert your language)'s arrays.
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Extract substring using regexp in plain bash
...amp;&
echo ${BASH_REMATCH[1]}
another solution using grep and look-around advanced regex :
$ echo "US/Central - 10:26 PM (CST)" | grep -oP "\-\s+\K\d{2}:\d{2}"
another solution using sed :
$ echo "US/Central - 10:26 PM (CST)" |
sed 's/.*\- *\([0-9]\{2\}:[0-9]\{2\}\).*/\1/'
anothe...
How to decide when to use Node.js?
I am new to this kind of stuff, but lately I've been hearing a lot about how good Node.js is. Considering how much I love working with jQuery and JavaScript in general, I can't help but wonder how to decide when to use Node.js. The web application I have in mind is something like Bitly - takes s...
How to manually expand a special variable (ex: ~ tilde) in bash
I have a variable in my bash script whose value is something like this:
15 Answers
15
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What is Activity.finish() method doing exactly?
...activity, the method onDestroy() is executed. This method can do things like:
Dismiss any dialogs the activity was managing.
Close any cursors the activity was managing.
Close any open search dialog
Also, onDestroy() isn't a destructor. It doesn't actually destroy the object. It's just a method...