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How to swap two variables in JavaScript
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@derek - I think it's called array matching, a form of destructuring assignment.
– Ted Hopp
Apr 22 '16 at 14:31
4
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How can I unit test a GUI?
...end in this type of non-security-related application, and what level of performance gain could one expect compared to MD5?
– Lèse majesté
Jul 4 '12 at 5:33
1
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What's the fastest way to merge/join data.frames in R?
...child sys.child
3 data.table 1 0.34 1.000000 0.31 0.01 NA NA
2 plyr 1 0.44 1.294118 0.39 0.02 NA NA
1 merge 1 1.17 3.441176 1.10 0.04 NA NA
4 sqldf 1 3.34 9...
setting multiple column using one update
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
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How to create cron job using PHP?
...y' value
Visit the link for the full article, it explains:
What is the format of the cronjob if you want to enter/edit it manually.
How to use PHP with SSH2 library to authenticate as the user, which crontab you are going to edit.
Full PHP class with all necessary methods for authentication, edi...
Android Reading from an Input stream efficiently
... it's creating lots of heavy String objects, copying their contents and performing operations on them. Instead, you should use StringBuilder to avoid creating new String objects on each append and to avoid copying the char arrays. The implementation for your case would be something like this:
Buffe...
How do I delete rows in a data frame?
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The key idea is you form a set of the rows you want to remove, and keep the complement of that set.
In R, the complement of a set is given by the '-' operator.
So, assuming the data.frame is called myData:
myData[-c(2, 4, 6), ] # notice the...
When to use single quotes, double quotes, and backticks in MySQL
...ts DATE and DATETIME literal values to be single-quoted as strings like '2001-01-01 00:00:00'. Consult the Date and Time Literals documentation for more details, in particular alternatives to using the hyphen - as a segment delimiter in date strings.
So using your example, I would double-quote the P...
Running Windows batch file commands asynchronously
...uble with this the other day. I had to launch 30 explorer windows for a performance test. Didn't work and it wasn't important enough for me to look into it.. started browsing around instead in that window and several hours later when I closed it, another one poped up! And I was like what the hell, c...
How to check if an option is selected?
...t;</script>
<select name="job" id="panel_master_user_job" class="form-control">
<option value="master">Master</option>
<option value="user">User</option>
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