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How to check iOS version?
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You need to be a bit careful here because [@"10.0" compare:@"10" options:NSNumericSearch] returns NSOrderedDescending, which might well not be intended at all. (I might expect NSOrderedSame.) This is at least a theoretical possibility.
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Getting the last argument passed to a shell script
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This is a bit of a hack:
for last; do true; done
echo $last
This one is also pretty portable (again, should work with bash, ksh and sh) and it doesn't shift the arguments, which could be nice.
It uses the fact that for implicitly l...
What's the pythonic way to use getters and setters?
...: It isn't, though. "Strip the markup, and you still get at least a little bit of useful information."
– Jean-François Corbett
Mar 16 '17 at 15:11
7
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Instance attribute attribute_name defined outside __init__
...ods though. In such case, you can simply assign attributes to None (with a bit of documentation) in the __init__ then call the sub-initialization methods.
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StringBuilder vs String concatenation in toString() in Java
... arguments gets large. It also doesn't work for times when you need to add bits at different times.
– Alex Feinman
Oct 7 '09 at 16:25
78
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Comma in C/C++ macro
...e
FOO(SINGLE_ARG(std::map<int, int>), map_var);
Otherwise, it's a bit more tedious:
#define SINGLE_ARG2(A,B) A,B
#define SINGLE_ARG3(A,B,C) A,B,C
// as many as you'll need
FOO(SINGLE_ARG2(std::map<int, int>), map_var);
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Blank space at top of UITextView in iOS 10
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answered Jan 10 '16 at 7:06
AamirAamir
12.1k88 gold badges5050 silver badges6060 bronze badges
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Inheritance and Overriding __init__ in python
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The book is a bit dated with respect to subclass-superclass calling. It's also a little dated with respect to subclassing built-in classes.
It looks like this nowadays:
class FileInfo(dict):
"""store file metadata"""
def __init_...
How to ignore xargs commands if stdin input is empty?
...5
kenorb
105k4949 gold badges542542 silver badges576576 bronze badges
answered Nov 28 '11 at 13:49
Sven Marnac...
C#: Printing all properties of an object [duplicate]
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This worked great.
– BitsAndBytes
May 7 '17 at 11:41
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@Best_Wher...