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Is unsigned integer subtraction defined behavior?
...nt five = 5, seven = 7;
unsigned int a = five - seven; // a = (-2 % 2^32) = 4294967294
int one = 1, six = 6;
unsigned int b = one - six; // b = (-5 % 2^32) = 4294967291
When you want to make sure that the result is signed, then stored it into signed variable or cast it to signed. Wh...
How to make Scroll From Source feature always enabled?
...schalimartines
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MySQL select with CONCAT condition
...to do so
– gypaetus
Aug 8 '13 at 19:32
1
For a bulky table with many rows, I think it would be un...
How to copy yanked text to VI command prompt
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answered May 25 '09 at 12:32
RookRook
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Getting “unixtime” in Java
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The Java 32-bit int matches 32-bit platforms (and the year 2038 problem). 64-bit platforms use a larger time_t data type. Java dodged that bullet by using a long as the return for System.currentTimeMillis(). If you convert to int, ...
JS: Check if date is less than 1 hour ago?
... |
edited Feb 27 at 10:32
answered Mar 1 '17 at 10:39
Go...
How do I get and set Environment variables in C#?
...hat to happen...that means folders in the path such as '%SystemRoot%\system32' were being re-written as 'C:\Windows\system32'. To get the un-expanded path, I had to use this:
string keyName = @"SYSTEM\CurrentControlSet\Control\Session Manager\Environment\";
string existingPathFolderVariable = (str...
PHP - Move a file into a different folder on the server
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answered Oct 2 '13 at 14:32
Ben FortuneBen Fortune
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What would cause an algorithm to have O(log n) complexity?
...o have that log2 16 = 4. Hmmm... what about 128?
128 / 2 = 64
64 / 2 = 32
32 / 2 = 16
16 / 2 = 8
8 / 2 = 4
4 / 2 = 2
2 / 2 = 1
This took seven steps, and log2 128 = 7. Is this a coincidence? Nope! There's a good reason for this. Suppose that we divide a number n by 2 i times. Then...
Embedding Base64 Images
...h as those used by web-based email clients. Data URIs must be smaller than 32 KiB in Version 8[3].
Data URIs are supported only for the following elements and/or attributes[4]:
object (images only)
img
input type=image
link
CSS declarations that accept a URL, such as background-...