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Are there strongly-typed collections in Objective-C?
...natomic) T prop;
@end
Use:
FooClass<NSString *> *foo = [[FooClass alloc] init];
NSArray<FooClass<NSString *> *> *fooAry = [NSArray array];
Be careful about those *s.
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i...
TINYTEXT, TEXT, MEDIUMTEXT, and LONGTEXT maximum storage sizes
...h language has an average of 4.5 letters per word
x is the number of bytes allocated
x-x
Type | A= worst case (x/3) | B = best case (x) | words estimate (A/4.5) - (B/4.5)
-----------+---------------------------------------------------------------------------
TINYTEXT | 85 ...
pycharm running way slow
...ions for 64bit application. and then edit -Xmx and -Xms value on it.
So I allocate 2048m for xmx and xms value (which is 2GB) for my Pycharm Heap Size. Here it is My Configuration. I have 8GB memory so I had set it up with this setting:
-server
-Xms2048m
-Xmx2048m
-XX:MaxPermSize=2048m
-XX:Reserve...
What is the most “pythonic” way to iterate over a list in chunks?
..., len(seq), size))
# (in python 2 use xrange() instead of range() to avoid allocating a list)
Works with any sequence:
text = "I am a very, very helpful text"
for group in chunker(text, 7):
print(repr(group),)
# 'I am a ' 'very, v' 'ery hel' 'pful te' 'xt'
print '|'.join(chunker(text, 10))
# I...
How do I find the length of an array?
...
Doing sizeof( myArray ) will get you the total number of bytes allocated for that array. You can then find out the number of elements in the array by dividing by the size of one element in the array: sizeof( myArray[0] )
...
Removing the title text of an iOS UIBarButtonItem
...:
Objective-C:
self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:self.navigationItem.backBarButtonItem.style target:nil action:nil];
Swift:
navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)
To be clear...
Strangest language feature
... a pool of Integer instances for values between -128 and 128, otherwise it allocs a new Integer, right?
– Mike Akers
Jan 4 '10 at 20:25
18
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Check whether an array is a subset of another
... t1. The advantage of this method is that it is done all in-place, without allocating additional space, unlike the solutions using .Except or .Intersect. Furthermore, this solution is able to break as soon as it finds a single element that violates the subset condition, while the others continue sea...
In-place type conversion of a NumPy array
...d answer. However arr_.astype(new_dtype, copy=False) still returns a newly allocated array. How to satisfied the dtype, order, and subok requirements to return a copy of array? I don't solve it.
– 蒋志强
Aug 5 '19 at 21:20
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iOS - forward all touches through a view
...ents to be forwarded to:
SomeViewSubclass *view = [[[SomeViewSubclass alloc] initWithFrame:someRect] autorelease];
view.forwardableTouchee = someOtherView;
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