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How to check if the string is empty?
... they are considered false in a Boolean context, so you can just do this:
if not myString:
This is the preferred way if you know that your variable is a string. If your variable could also be some other type then you should use myString == "". See the documentation on Truth Value Testing for ot...
BaseException.message deprecated in Python 2.6
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Using str breaks if the exception was constructed with a unicode argument: str(MyException(u'\xe5')) raises UnicodeEncodeError. Using unicode instead of str isn't foolproof either because unicode(MyException('\xe5')) raises UnicodeDecodeError...
How to check version of python modules?
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print(contruct.__version__) if using Python 3.*
– jacanterbury
Nov 5 '18 at 16:19
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show 3 mo...
Swift: declare an empty dictionary
...ict = [:] // ok, I'm done with it
In the last example the dictionary is known to have a type Dictionary<String, String> by the first line. Note that you didn't have to specify it explicitly, but it has been inferred.
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Android – Listen For Incoming SMS Messages
...ot correct. Any app can still get the SMS_RECEIVED broadcast in 4.4+, and, now that that broadcast cannot be aborted, it is more certain than in previous versions.
– Mike M.
Jul 26 '16 at 13:30
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Why does += behave unexpectedly on lists?
...e general answer is that += tries to call the __iadd__ special method, and if that isn't available it tries to use __add__ instead. So the issue is with the difference between these special methods.
The __iadd__ special method is for an in-place addition, that is it mutates the object that it acts ...
PHP Get name of current directory
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Note that if you use an include or a required, __DIR__ is the path of the included file and NOT the current directory
– Sebastien Horin
Feb 16 '15 at 12:41
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Get name of current class?
...rom a child class it will output the child class name. It then gets tricky if you REALLy want the class you're working with.
– Kenet Jervet
Jun 8 '15 at 5:16
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Get the current script file name
If I have PHP script, how can I get the filename from inside that script?
16 Answers
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Exiting from python Command Line
To exit from Python command line, I have to type exit(). If I type exit, it says
11 Answers
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