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Exact time measurement for performance testing [duplicate]
...d Mar 24 '13 at 11:05
Ivaylo Strandjev
62.1k1313 gold badges104104 silver badges159159 bronze badges
answered Jun 9 '09 at 10:40
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Add column with constant value to pandas dataframe [duplicate]
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The reason this puts NaN into a column is because df.index and the Index of your right-hand-side object are different. @zach shows the proper way to assign a new column of zeros. In general, pandas tries to do as much alignment of indices as possible. One downside is that when indice...
What's the dSYM and how to use it? (iOS SDK)
...es. I guess this is a debugging related file, but I don't know what it is, and how to use it.
2 Answers
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Creating an R dataframe row-by-row
...d like to construct a dataframe row-by-row in R. I've done some searching, and all I came up with is the suggestion to create an empty list, keep a list index scalar, then each time add to the list a single-row dataframe and advance the list index by one. Finally, do.call(rbind,) on the list.
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Rails: How to change the title of a page?
...;/h1>
</body>
It's also possible to encapsulate the content_for and yield(:title) statements in helper methods (as others have already suggested). However, in simple cases such as this one I like to put the necessary code directly into the specific views without custom helpers.
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git submodule tracking latest
We are moving our (huge) project to git and we are thinking about using submodules. Our plan is to have three different heads in the superproject: release,stable,latest. The project leads will handle the release and stable branches. They will move the submodules as required.
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Run Cron job every N minutes plus offset
...on
An * in the minute field is the same as 0-59/1 where 0-59 is the range and 1 is the step. The command will run at the first minute in the range (0), then at all successive minutes that are distant from the first by step (1), until the last (59).
Which is why */20 * * * * will run at 0 minutes, ...
Are querystring parameters secure in HTTPS (HTTP + SSL)? [duplicate]
...t-lived token, typically valid for either one hour or one month (for oauth and similar services) - but if there were a breach of that magnitude, they'd just invalidate ALL outstanding tokens. Everyone has to re-authenticate, using their (presumably) still secure passwords.
– Da...
How to check what user php is running as?
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If available you can probe the current user account with posix_geteuid and then get the user name with posix_getpwuid.
$username = posix_getpwuid(posix_geteuid())['name'];
If you are running in safe mode however (which is often the case when exec is disabled), then it's unlikely that your PH...
Clearing using jQuery
...ement at the end (including custom properties that were set on it).
Tested and working in Opera, Firefox, Safari, Chrome and IE6+. Also works on other types of form elements, with the exception of type="hidden".
window.reset = function(e) {
e.wrap('<form>').closest('form').get(0).reset()...