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Fastest way to determine if an integer's square root is an integer
...re than the benefit one gets, so I use bit tricks involving 255 = 2^8-1 to compute the residue. (For better or worse, I am not using the trick of reading individual bytes out of a word, only bitwise-and and shifts.)
int64 y = x;
y = (y & 4294967295LL) + (y >> 32);
y = (y & 65535) + (...
What is time_t ultimately a typedef to?
...s of
arithmetic operations applied to time
values.
Unix and POSIX-compliant systems implement the time_t type as a signed
integer (typically 32 or 64 bits wide)
which represents the number of seconds
since the start of the Unix epoch:
midnight UTC of January 1, 1970 (not
counting ...
How to destroy an object?
... seems to have better performance (not tested but documented on one of the comments from the PHP official manual).
That said, do keep in mind that PHP always destroys the objects as soon as the page is served. So this should only be needed on really long loops and/or heavy intensive pages.
...
Why does this code using random strings print “hello world”?
... @Vulcan - the javadoc says that the seed is 48 bits. docs.oracle.com/javase/7/docs/api/java/util/Random.html. And besides, the actual seeds are 32 bit values.
– Stephen C
Mar 3 '13 at 4:58
...
Parallel foreach with asynchronous lambda
...t Task.WhenAll(tasks);
var count = bag.Count;
If you need something more complex, check out Stephen Toub's ForEachAsync post.
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What Automatic Resource Management alternatives exist for Scala?
...
community wiki
2 revschengpohi
...
What is App.config in C#.NET? How to use it?
...e file from here, why doesn't it reflect the applied changes?
A: When you compile an application, its app.config is copied to the bin directory1 with a name that matches your exe. For example, if your exe was named "test.exe", there should be a "text.exe.config" in your bin directory. You can chang...
How can I create a UIColor from a hex string?
...hex format string to an integer for use with this macro, see stackoverflow.com/questions/3648411/….
– devios1
Aug 14 '14 at 21:18
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How to git-cherry-pick only changes to certain files?
... branch the changes made only to some of the files changed in a particular commit which includes changes to multiple files, how can this be achieved?
...
Is there a way to define a min and max value for EditText in Android?
...
First make this class :
package com.test;
import android.text.InputFilter;
import android.text.Spanned;
public class InputFilterMinMax implements InputFilter {
private int min, max;
public InputFilterMinMax(int min, int max) {
this.min =...