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Difference between dispatch_async and dispatch_sync on serial queue?
...rialQueue, ^{ printf("3"); });
printf("4");
It may print 2413 or 2143 or 1234 but 1 always before 3
for this code
dispatch_sync(_serialQueue, ^{ printf("1"); });
printf("2");
dispatch_sync(_serialQueue, ^{ printf("3"); });
printf("4");
it always print 1234
Note: For first code, it won't pri...
Is “else if” a single keyword?
...They are not a single keyword if we go to the draft C++ standard section 2.12 Keywords table 4 lists both if and else separately and there is no else if keyword. We can find a more accessible list of C++ keywords by going to cppreferences section on keywords.
The grammar in section 6.4 also makes ...
How do you write tests for the argparse portion of a python module? [closed]
...ou should refactor your code and move the parsing to a function:
def parse_args(args):
parser = argparse.ArgumentParser(...)
parser.add_argument...
# ...Create your parser as you like...
return parser.parse_args(args)
Then in your main function you should just call it with:
parse...
Resolve Type from Class Name in a Different Assembly
... |
edited Oct 2 '18 at 8:12
answered May 14 '16 at 12:32
s...
Does this app use the Advertising Identifier (IDFA)? - AdMob 6.8.0
... ?
– Rukshan Marapana
Jul 29 '14 at 12:47
7
To clarify, the first box is the line: "Serve adverti...
Unique fields that allow nulls in Django
...e DRY I suppose.
– Ashish Gupta
Dec 12 '15 at 10:52
6
...
Python date string to date object
... Jean-François Corbett
33.6k2525 gold badges124124 silver badges172172 bronze badges
answered Mar 20 '15 at 6:53
SchopenhauerSchopenhauer
...
nodejs get file name from absolute path?
...other platforms
– OwnageIsMagic
Jan 12 '18 at 23:10
@OwnageIsMagic Yes, it does indeed. Always use the methods of the ...
Real world example about how to use property feature in python?
...changing terms.
Complex calculation hidden behind an attribute:
class PDB_Calculator(object):
...
@property
def protein_folding_angle(self):
# number crunching, remote server calls, etc
# all results in an angle set in 'some_angle'
# It could also reference a ca...
Getting the last argument passed to a shell script
...
Laurence GonsalvesLaurence Gonsalves
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...