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Is this a “good enough” random algorithm; why isn't it used if it's faster?
I made a class called QuickRandom , and its job is to produce random numbers quickly. It's really simple: just take the old value, multiply by a double , and take the decimal part.
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Creating a “logical exclusive or” operator in Java
...Here's an example:
public static void main(String[] args) {
boolean[] all = { false, true };
for (boolean a : all) {
for (boolean b: all) {
boolean c = a ^ b;
System.out.println(a + " ^ " + b + " = " + c);
}
}
}
Output:
false ^ false = false
f...
How to delete an old/unused Data Model Version in Xcode
...d the .xcdatamodeld file to your project
This eliminates the need to manually modify any of the project metadata files.
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Array vs. Object efficiency in JavaScript
...an array, too:
var a3 = [];
a3[29938] = "a";
a3[32994] = "b";
It's basically an array with holes in it, because every array does have continous indexing. It's slower than arrays without holes. But iterating manually through the array is even slower (mostly).
This is an object:
var a3 = {};
a3[2...
How do I set a column value to NULL in SQL Server Management Studio?
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I think @Zack properly answered the question but just to cover all the bases:
Update myTable set MyColumn = NULL
This would set the entire column to null as the Question Title asks.
To set a specific row on a specific column to null use:
Update myTable set MyColumn = NULL where Fi...
Unix command to find lines common in two files
... @ferdy (Repeating my comment from your answer, as yours is essentially a repeated answer posted as a comment) grep does some weird things you might not expect. Specifically, everything in 1.txt will be interpreted as a regular expression and not a plain string. Also, any blank line in 1.txt...
What's in an Eclipse .classpath/.project file?
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Eclipse is a runtime environment for plugins. Virtually everything you see in Eclipse is the result of plugins installed on Eclipse, rather than Eclipse itself.
The .project file is maintained by the core Eclipse platform, and its goal is to describe the project from a gener...
How to have the formatter wrap code with IntelliJ?
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these guys keep on renaming setting keys all the time
– ACV
Jul 1 '19 at 11:05
This ...
How to check with javascript if connection is local host?
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Isn't there a more general / "catch-all" solution that would also cover cases of using 127.0.0.1, etc.?
– jacobq
Oct 10 '12 at 18:21
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ASP.NET MVC on IIS 7.5
..." in Framework64 for 64-bit Windows! that bit me in the *ss. I must've installed the 32 bit verion 4 or 5 times with no effect.
– Ben Lesh
Jan 4 '11 at 15:31
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