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Create numpy matrix filled with NaNs
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You rarely need loops for vector operations in numpy.
You can create an uninitialized array and assign to all entries at once:
>>> a = numpy.empty((3,3,))
>>> a[:] = numpy.nan
>>> a
array([[ NaN, ...
Download single files from GitHub
I guess most of you, developers, use any VCS , and I hope some of you use Git. Do you have any tip or trick how to get a download URL for a single file in a repository?
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SVN repository backup strategies
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You could use something like (Linux):
svnadmin dump repositorypath | gzip > backupname.svn.gz
Since Windows does not support GZip it is just:
svnadmin dump repositorypath > backupname.svn
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Resizing UITableView to fit content
...ch will have a question in a UILabel and a multiple choice answers displayed in UITableView , each row showing a multiple choice. Questions and answers will vary, so I need this UITableView to be dynamic in height.
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How to get current time in milliseconds in PHP?
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@FredrikWendt, I think you are confusing with time(). microtime(true) on the other hand returns the current time in seconds since the Unix epoch accurate to the nearest microsecond (see PHP reference). It's actually very easy to test if you run the...
How to set variables in HIVE scripts
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You need to use the special hiveconf for variable substitution.
e.g.
hive> set CURRENT_DATE='2012-09-16';
hive> select * from foo where day >= ${hiveconf:CURRENT_DATE}
similarly, you could pass on command line:
% hi...
How do you detect the clearing of a “search” HTML5 input?
In HTML5, the search input type appears with a little X on the right that will clear the textbox (at least in Chrome, maybe others). Is there a way to detect when this X is clicked in Javascript or jQuery other than, say, detecting when the box is clicked at all or doing some sort of location clic...
Fit image into ImageView, keep aspect ratio and then resize ImageView to image dimensions?
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(The answer was heavily modified after clarifications to the original question)
After clarifications:
This cannot be done in xml only. It is not possible to scale both the image and the ImageView so that image's one dimension would always be 250d...
What is a method that can be used to increment letters?
Does anyone know of a Javascript library (e.g. underscore, jQuery, MooTools, etc.) that offers a method of incrementing a letter?
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How to change language settings in R
My error messages are displayed in French. How can I change my system language setting so the error messages will be displayed in English?
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