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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...
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
...
answered May 25 '09 at 12:32
RookRook
53.1k4343 gold badges154154 silver badges229229 bronze badges
...
Getting “unixtime” in Java
...
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, ...
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
25.8k88 gold badges7070 silver badges7373 bronze badges
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JS: Check if date is less than 1 hour ago?
... |
edited Feb 27 at 10:32
answered Mar 1 '17 at 10:39
Go...
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-...
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...
How do I find out which process is locking a file using .NET?
...sources(uint pSessionHandle,
UInt32 nFiles,
string[] rgsFilenames,
UInt32 nApplications,
[In] RM_UNIQUE_PROCESS[] rgApplications,
...
How to export plots from matplotlib with transparent background?
...30]: x = np.linspace(0,6,31)
In [31]: y = np.exp(-0.5*x) * np.sin(x)
In [32]: plot(x, y, 'bo-')
Out[32]: [<matplotlib.lines.Line2D at 0x3f29750>]
In [33]: savefig('demo.png', transparent=True)
Result:
Of course, that plot doesn't demonstrate the transparency. Here's a scree...