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Get underlying NSData from UIImage
...ity
or
NSData *imageData = UIImagePNGRepresentation(image);
Depending if you want your data in PNG format or JPG format.
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How to add a 'or' condition in #ifdef
How can I add a 'or' condition in #ifdef ?
3 Answers
3
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What is the Python 3 equivalent of “python -m SimpleHTTPServer”
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And python3 -m http.server 8080 if You need to bind to a port. Read more at the end of the section: docs.python.org/3/library/…
– AdamKalisz
Aug 22 '18 at 8:36
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Returning the product of a list
... 38.5 ms 180 µs 216 µs
Result: np.prod is the fastest one, if you use np.array as data structure (18x for small array, 250x for large array)
with python 3.3.2:
| 1 | 2 | 3 | 4 |
-------+-----------+-----------+-----------+-----------+
A ...
Array Size (Length) in C#
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If it's a one-dimensional array a,
a.Length
will give the number of elements of a.
If b is a rectangular multi-dimensional array (for example, int[,] b = new int[3, 5];)
b.Rank
will give the number of dimensions (2) an...
How can I determine if a String is non-null and not only whitespace in Groovy?
..., which is great, but there doesn't seem to be a good way of determining if a String has something other than just white space in it.
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Should you always favor xrange() over range()?
...hon 3, range() does what xrange() used to do and xrange() does not exist. If you want to write code that will run on both Python 2 and Python 3, you can't use xrange().
range() can actually be faster in some cases - eg. if iterating over the same sequence multiple times. xrange() has to reconstruc...
How can I check if a key exists in a dictionary? [duplicate]
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if key in array:
# do something
Associative arrays are called dictionaries in Python and you can learn more about them in the stdtypes documentation.
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How to generate random number with the specific length in python
... this snipet give you a result of 037??? it's a randint from (100 to 1000) if n ==3
– moldovean
Jan 7 '14 at 10:17
3
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“static const” vs “#define” vs “enum”
...ar 5
enum { var = 5 };
Ignoring issues about the choice of name, then:
If you need to pass a pointer around, you must use (1).
Since (2) is apparently an option, you don't need to pass pointers around.
Both (1) and (3) have a symbol in the debugger's symbol table - that makes debugging easier. ...