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Why use static_cast(x) instead of (int)x?
...e main reason is that classic C casts make no distinction between what we call static_cast<>(), reinterpret_cast<>(), const_cast<>(), and dynamic_cast<>(). These four things are completely different.
A static_cast<>() is usually safe. There is a valid conversion in the...
How to use a variable to specify column name in ggplot
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"cumbersome"? Non-standard evaluation in R is ironically the most cumbersome "feature" I have ever encountered in a programming language. Truly maddening.
– jessexknight
Feb 4 at 18:10
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Aliases in Windows command prompt
...ommand dropbox research points to the same directory as research.
As Rivenfall pointed out, it is a good idea to include a command that allows for convenient editing of the alias.cmd file. See alias above. If you are in a cmd session, enter cmd to restart cmd and reload the alias.cmd file.
When ...
Adding rounded corner and drop shadow to UICollectionViewCell
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Neither of these solutions worked for me. If you place all your subviews into the UICollectionViewCell content view, which you probably are, you can set the shadow on the cell's layer and the border on the contentView's layer to achieve both results.
cell.contentView.layer.corne...
UIView Infinite 360 degree rotation animation?
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This might help some one, [view.layer removeAllAnimations]; to stop animation when needed.
– arunit21
Aug 22 '14 at 13:57
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Is there any way to git checkout previous branch?
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wow, I totally should have just tried it! figured - was a shell-ism, and that if the functionality was in git, it would be something different
– Matt Briggs
Aug 26 '11 at 16:17
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How to add images in select list?
...ut potential side effects on other elements (such as the check box). After all that, they will have a study to decide if all those studies where needed.
– Greeso
Oct 6 '17 at 1:17
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Django: Set foreign key using integer?
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Yep:
employee = Employee(first_name="Name", last_name="Name")
employee.type_id = 4
employee.save()
ForeignKey fields store their value in an attribute with _id at the end, which you can access directly to avoid visiting the database.
The _id version of...
argparse module How to add option without any argument?
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As @Felix Kling suggested use action='store_true':
>>> from argparse import ArgumentParser
>>> p = ArgumentParser()
>>> _ = p.add_argument('-f', '--foo', action='store_true')
>>> args = p.parse_args()
>>> args.foo
False
&g...
Write applications in C or C++ for Android? [closed]
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Normally, you have to:
Install Google Android NDK. It
contains libs, headers, makfile
examples and gcc toolchain
Build an executable from your C code
for ARM, optimize and link it with
provided libs if required
Connect to a pho...