大约有 27,000 项符合查询结果（耗时：0.0366秒） [XML]
How can I trim leading and trailing white space?
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doesn't seem to work for multi-line strings, despite \n being in the covered character class. trimws("SELECT\n blah\n FROM foo;") still contains newlines.
– Jubbles
Dec 31 '15 at 1:...
How to set the text color of TextView in code?
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For setTextColor, why does it have to take the getResources().getColor() rather than the direct R.color.errorColor reference? The R.color.x works for almost every other method. Incredibly frustrating!
– Civilian
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Fastest way to get the first object from a queryset in django?
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it doesn't do the [:1], so it's not as fast (unless you need to evaluate the whole queryset anyway).
– janek37
Feb 26 '16 at 21:16
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How to “properly” print a list?
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what does print(*L) do here?
– sandeeps
Jul 28 '17 at 5:24
2
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How to enable file sharing for my app?
...e files in and
out of this directory as needed from iTunes. This feature does not
allow your app to share files with other apps on the same device; that
behavior requires the pasteboard or a document interaction controller
object.
To enable file sharing for your app, do the following:
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How to correctly dismiss a DialogFragment?
...e @PareshMayani is correct Venky. The tutorial on DialogFragment by google does not show the onPause() method being used at all. But I think I see what you are doing. Whats the point though if the user isn't calling onPause(). Thats when the system knows the fragment is being called away. What about...
How to “test” NoneType in python?
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this doesn't work if comparing whether a pandas DataFrame exists -- for that, I use type(df) is type(None) to avoid: The truth value of a DataFrame is ambiguous
– Marc Maxmeister
Mar 6 at 18:...
How do I REALLY reset the Visual Studio window layout?
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Also be aware backing up your settings often doesn't work. I've never successfully done it. I believe there is a known bug if you add macros to some menus.
– dwidel
May 27 '11 at 23:19
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What is the correct syntax for 'else if'?
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Here is a little refactoring of your function (it does not use "else" or "elif"):
def function(a):
if a not in (1, 2):
a = 3
print(str(a) + "a")
@ghostdog74: Python 3 requires parentheses for "print".
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How to grep a text file which contains some binary data?
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grep --text doesn't always work; it respects CTRL+D as a file terminator. So if you have that in your binary file, grep will exit early.
– Tommy
Jan 30 at 20:05
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