大约有 15,700 项符合查询结果（耗时：0.0310秒） [XML]
Efficient method to generate UUID String in JAVA (UUID.randomUUID().toString() without the dashes)
...hines which you might not need. They have time-based method which is the fatest one among all methods. Yes, synchronized is not necessary here cause' I realized SecureRandom is thread safe already. Why would declaring static final on SecureRandom would decrease the entropy? I am curious :) There ar...
How to use @Nullable and @Nonnull annotations more effectively?
...ot be null, there are further advantages:
Static code analysis tools can test the same as your IDE (e.g. FindBugs)
You can use AOP to check these assertions
This can help your code be more maintainable (since you do not need null checks) and less error-prone.
...
Simulate delayed and dropped packets on Linux
...t.
# tc qdisc add dev eth0 root netem delay 100ms
Now a simple ping test to host on the local network should show an increase of 100 milliseconds. The delay is limited by the clock resolution of the kernel (Hz). On most 2.4 systems, the system clock runs at 100 Hz which allows delays in incr...
Can I bind an array to an IN() condition?
...mt->execute();
?>
fix: dan, you were right. fixed the code (didn't test it though)
edit: both chris (comments) and somebodyisintrouble suggested that the foreach-loop ...
(...)
// bindvalue is 1-indexed, so $k+1
foreach ($ids as $k => $id)
$stmt->bindValue(($k+1), $id);
$stmt-&g...
Regex - Does not contain certain Characters
...
Here you go:
^[^<>]*$
This will test for string that has no < and no >
If you want to test for a string that may have < and >, but must also have something other you should use just
[^<>] (or ^.*[^<>].*$)
Where [<>] means a...
Capturing touches on a subview outside the frame of its superview using hitTest:withEvent:
...ex view hierarchies, the correct subview will be returned.
- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
if (self.clipsToBounds) {
return nil;
}
if (self.hidden) {
return nil;
}
if (self.alpha == 0) {
return nil;
}
for (UIVie...
Scanning Java annotations at runtime [closed]
...nnotated classes and build the index file for runtime use.
This is the fastest way possible to do annotated class discovery because you don't need to scan your classpath at runtime, which is usually very slow operation. Also this approach works with any classloader and not only with URLClassLoaders...
How to simulate Server.Transfer in ASP.NET MVC?
... with MVC3 (using code from Simon's post). It should (haven't been able to test it) also work in MVC2 by looking at whether or not it's running within the integrated pipeline of IIS7+.
For full transparency; In our production environment we've never use the TransferResult directly. We use a Transfe...
Using scanf() in C++ programs is faster than using cin?
...
Here's a quick test of a simple case: a program to read a list of numbers from standard input and XOR all of the numbers.
iostream version:
#include <iostream>
int main(int argc, char **argv) {
int parity = 0;
int x;
while ...
Can you call Directory.GetFiles() with multiple filters?
... but it's actually (much) slower then the accepted answer. Check this SpeedTest
– OttO
Feb 13 '13 at 22:37
Thanks. Gla...