大约有 16,000 项符合查询结果（耗时：0.0489秒） [XML]
Sleep Command in T-SQL?
...ate a WHILE loop like this: CREATE FUNCTION [dbo].[ForcedTimeout](@seconds int) returns int as BEGIN DECLARE @endTime datetime2(0) = DATEADD(SECOND, @seconds, GETDATE()); WHILE (GETDATE() < @endTime ) BEGIN SET @endTime = @endTime; -- do nothing, but SQL requires a statement. END
...
Color different parts of a RichTextBox string
...g startWord, string endWord, Color color)
{
rtb.SuspendLayout();
Point scroll = rtb.AutoScrollOffset;
int slct = rtb.SelectionIndent;
int ss = rtb.SelectionStart;
List<Point> ls = GetAllWordsIndecesBetween(rtb.Text, startWord, endWord, true);
foreach (var item in ls)
...
Trying to understand CMTime and CMTimeMake
...he following code makes the concept more clear:
1)
Float64 seconds = 5;
int32_t preferredTimeScale = 600;
CMTime inTime = CMTimeMakeWithSeconds(seconds, preferredTimeScale);
CMTimeShow(inTime);
The above code gives:
{3000/600 = 5.000}
Which means a total duration of 5 seconds, with 3000 frames...
Why is this F# code so slow?
...comparison
In the C# version, the function is not generic (it just takes int). You can improve the F# version by adding type annotations (to get the same thing as in C#):
let min3(a:int, b, c) = min a (min b c)
...or by making min3 as inline (in which case, it will be specialized to int when us...
How to reference a method in javadoc?
...llows
For example, here is a comment that refers to the getComponentAt(int, int) method:
Use the {@link #getComponentAt(int, int) getComponentAt} method.
The package.class part can be ommited if the referred method is in the current class.
Other useful links about JavaDoc are:
JavaDo...
How to import a class from default package
... know java at all. That was a great help. Guess I'll have to move my class into a package...
– anhoppe
Jan 20 '16 at 20:14
...
How do you set, clear, and toggle a single bit?
...er >> n) & 1U;
That will put the value of the nth bit of number into the variable bit.
Changing the nth bit to x
Setting the nth bit to either 1 or 0 can be achieved with the following on a 2's complement C++ implementation:
number ^= (-x ^ number) & (1UL << n);
Bit n will be s...
How to calculate date difference in JavaScript?
...
There is no "simple" arithmetic for converting milliseconds to years. You must be aware of bissextile year, of timezone, and some days have 23 or 25 hours. Some years have 365,25 days, so there is no simple arithmetic here (still looking for an accurate solutio...
How do I get the file extension of a file in Java?
...
Do you really need a "parser" for this?
String extension = "";
int i = fileName.lastIndexOf('.');
if (i > 0) {
extension = fileName.substring(i+1);
}
Assuming that you're dealing with simple Windows-like file names, not something like archive.tar.gz.
Btw, for the case that a di...
How can a Java program get its own process ID?
...orm is pretty simple:
Windows
Make sure you have jna-platform.jar then:
int pid = Kernel32.INSTANCE.GetCurrentProcessId();
Unix
Declare:
private interface CLibrary extends Library {
CLibrary INSTANCE = (CLibrary) Native.loadLibrary("c", CLibrary.class);
int getpid ();
}
Then:
in...