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Objective-C : BOOL vs bool
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199
From the definition in objc.h:
#if (TARGET_OS_IPHONE && __LP64__) || TARGET_OS_WATCH...
What does the restrict keyword mean in C++?
...commends it's usage when available:
restrict keyword
! New to 1999 ANSI/ISO C standard
! Not in C++ standard yet, but supported by many C++ compilers
! A hint only, so may do nothing and still be conforming
A restrict-qualified pointer (or reference)...
! ...
RESTful Alternatives to DELETE Request Body
...ngs. The query string is part of the URI. Sending a DELETE request to /foo?123 means you are deleting a different resource than if you were to send DELETE to /foo?456.
– Nicholas Shanks
Jan 25 '16 at 17:38
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Why aren't variable-length arrays part of the C++ standard?
... And if you don't know the size beforehand, you will write unsafe code.
C99 VLAs could provide a small benefit of being able to create small arrays without wasting space or calling constructors for unused elements, but they will introduce rather large changes to the type system (you need to be abl...
What does the C++ standard state the size of int, long type to be?
...one of these de facto standards is legislated by the C standard (ISO/IEC 9899:1999), but all are permitted by it.
And, by definition, sizeof(char) is 1, notwithstanding the test in the Perl configure script.
Note that there were machines (Crays) where CHAR_BIT was much larger than 8. That meant, ...
pandas: filter rows of DataFrame with operator chaining
... A B C D
a 1 4 9 1
b 4 5 0 2
c 5 5 1 0
d 1 3 9 6
In [99]: df[(df.A == 1) & (df.D == 6)]
Out[99]:
A B C D
d 1 3 9 6
If you want to chain methods, you can add your own mask method and use that one.
In [90]: def mask(df, key, value):
....: return df[df[key]...
In Objective-C why should I check if self = [super init] is not nil?
... that if (self != nil) check is there, for proper operation of your class, 99.99% of the time you actually do need self to be non-nil.
Now, suppose, for whatever reason, [super init] did return nil, basically your check against nil is basically passing the buck up to the caller of your class, where...
Understanding offsetWidth, clientWidth, scrollWidth and -Height, respectively
...nswered Jan 11 '14 at 15:26
user123444555621user123444555621
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Set the location in iPhone Simulator
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123
As of iOS 5, the simulator has a configurable location.
Under the Debug menu, the last entry ...
What is the best collation to use for MySQL with PHP? [closed]
..., `notes`) VALUES
(1, NULL, '0000-00-00 00:00:00', '2014-08-25 03:00:36', '1234567890', '12345678901234567890', '1234567890123456789012345678901234567890', '1234567890123456789012345678901234567890', '123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789...