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Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?
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the original version of that document was just a bunch of prejudices. it's been rewritten to only contain facts backed up by actual benchmarks, and it's updated as the VM is updated. you can find the various benchmarks -- plus some of the benchmarks we use to optimize the core libraries -- at h...
Specifying and saving a figure with exact size in pixels
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Matplotlib doesn't work with pixels directly, but rather physical sizes and DPI. If you want to display a figure with a certain pixel size, you need to know the DPI of your monitor. For example this link will detect that for you.
If you have an imag...
How do you copy a record in a SQL table but swap out the unique id of the new row?
...follow
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edited Sep 29 '08 at 20:54
answered Sep 29 '08 at 17:37
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Python and pip, list all versions of a package that's available?
Given the name of a Python package that can be installed with pip , is there any way to find out a list of all the possible versions of it that pip could install? Right now it's trial and error.
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How to remove the querystring and get only the url?
...bstring before the ? in the querystring. explode() is less direct because it must produce a potentially two-element array by which the first element must be accessed.
Some other techniques may break when the querystring is missing or potentially mutate other/unintended substrings in the url -- the...
Remove array element based on object property
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One possibility:
myArray = myArray.filter(function( obj ) {
return obj.field !== 'money';
});
Please note that filter creates a new array. Any other variables referring to the original array would not get the filtered data althoug...
How to set tint for an image view programmatically in android?
Need to set tint for an image view... I am using it the following way:
22 Answers
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Getting SyntaxError for print with keyword argument end=' '
... bar, end=" ")
or
print "foo" % bar, end=" "
i.e. as a call to print with a tuple as argument.
That's obviously bad syntax (literals don't take keyword arguments). In Python 3.x print is an actual function, so it takes keyword arguments, too.
The correct idiom in Python 2.x for end=" " is:
p...
How to get screen dimensions as pixels in Android
...Therefore I need to get the screen width and screen height and then set position:
40 Answers
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How to pass an array within a query string?
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Here's what I figured out:
Submitting multi-value form fields, i.e. submitting arrays through GET/POST vars, can be done several different ways, as a standard is not necessarily spelled out.
Three possible ways to send multi-value fields or arrays would b...