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What is the difference between an int and a long in C++?
...me, but for example on Alpha systems a long was 64 bits whereas an int was 32 bits. This article covers the rules for the Intel C++ compiler on variable platforms. To summarize:
OS arch size
Windows IA-32 4 bytes
Windows Intel 64 4 bytes
Windows ...
Why does an NSInteger variable have to be cast to long when used as a format argument?
...s a 64-bit integer. The %i format, on the other hand, is for int, which is 32-bit. So the format and the actual parameter do not match in size.
Since NSInteger is 32-bit or 64-bit, depending on the platform, the compiler recommends
to add a cast to long generally.
Update: Since iOS 7 supports 64-b...
What's the maximum value for an int in PHP?
..., although a maximum
value of about two billion is the
usual value (that's 32 bits signed).
PHP does not support unsigned
integers. Integer size can be
determined using the constant
PHP_INT_SIZE, and maximum value using
the constant PHP_INT_MAX since PHP
4.4.0 and PHP 5.0.5.
64-bit platforms usually...
How do I properly clean up Excel interop objects?
...ndow (it's the first solution).
Here is the simple code:
[DllImport("user32.dll")]
private static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);
/// <summary> Tries to find and kill process by hWnd to the main window of the process.</summary>
/// <param ...
Why does the C preprocessor interpret the word “linux” as the constant “1”?
...
ricirici
189k2323 gold badges182182 silver badges260260 bronze badges
...
What is the JavaScript >>> operator and how do you use it?
...on-Numbers to Number, it converts them to Numbers that can be expressed as 32-bit unsigned ints.
Although JavaScript's Numbers are double-precision floats(*), the bitwise operators (<<, >>, &, | and ~) are defined in terms of operations on 32-bit integers. Doing a bitwise operation ...
Unexpected results when working with very big integers on interpreted languages
... which supports arbitrary precision. It will produce the correct answer on 32 or 64 bit platforms.
This can be seen by raising 2 to a power far greater than the bit width of the platform:
>>> 2**99
633825300114114700748351602688L
You can demonstrate (with Python) that the erroneous val...
Which one will execute faster, if (flag==0) or if (0==flag)?
...1;
}
int yoda(int c) {
if (0 == c) { return 0; }
return 1;
}
define i32 @regular(i32 %c) nounwind readnone {
entry:
%not. = icmp ne i32 %c, 0 ; <i1> [#uses=1]
%.0 = zext i1 %not. to i32 ; <i32> [#uses=1]
ret i32 %.0
}
define i32 @yo...
IIS7 Settings File Locations
...e looking for applicationHost.config, which is located in C:\Windows\System32\inetsrv\config.
Yes, it's an XML file, and yes, editing the file by hand will affect the IIS config after a restart. You can think of IIS Manager as a GUI front-end for editing applicationHost.config and web.config.
...
Rank function in MySQL
... person VALUES (3, 'Jack', 30, 'M');
INSERT INTO person VALUES (4, 'Bill', 32, 'M');
INSERT INTO person VALUES (5, 'Nick', 22, 'M');
INSERT INTO person VALUES (6, 'Kathy', 18, 'F');
INSERT INTO person VALUES (7, 'Steve', 36, 'M');
INSERT INTO person VALUES (8, 'Anne', 25, 'F');
Result:
+---------...