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Simple (non-secure) hash function for JavaScript? [duplicate]
....hashCode(), and receive a numerical hash code (more specifically, a Java equivalent) such as 1395333309.
String.prototype.hashCode = function() {
var hash = 0;
if (this.length == 0) {
return hash;
}
for (var i = 0; i < this.length; i++) {
var char = this.charCod...
How do I reverse an int array in Java?
...ta[right];
data[right] = temp;
// move the left and right index pointers in toward the center
left++;
right--;
}
}
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MySQL: Fastest way to count number of rows
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When you COUNT(*) it takes in count column indexes, so it will be the best result. Mysql with MyISAM engine actually stores row count, it doensn't count all rows each time you try to count all rows. (based on primary key's column)
Using PHP to count rows is not very ...
What is Delegate? [closed]
...
One question related to your answer. How is it really different from calling a function in normal way? Just because of that it is not known at runtime ?
– Naveed
Jan 11 '10 at 19:51
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Iterate through object properties
... true for obj.hasOwnProperty(key)).
Object.keys(obj).forEach(function(key,index) {
// key: the name of the object key
// index: the ordinal position of the key within the object
});
This is better (and more readable) than using a for-in loop.
Its supported on these browsers:
Firefox ...
Adding gif image in an ImageView in android
...r table
protected int[] act; // active color table
protected int bgIndex; // background color index
protected int bgColor; // background color
protected int lastBgColor; // previous bg color
protected int pixelAspect; // pixel aspect ratio
protected boolean lctFlag; // local ...
How to pass arguments into a Rake task with environment in Rails? [duplicate]
...s]
Original Answer
When you pass in arguments to rake tasks, you can require the environment using the :needs option. For example:
desc "Testing environment and variables"
task :hello, :message, :needs => :environment do |t, args|
args.with_defaults(:message => "Thanks for logging on")...
CSS selector with period in ID
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Classic. Just after digging through all the specs writing the question, I read through it some more and found there is an escape character. I've never needed it before, but the CSS spec does allow for backslash (\) escaping like most languages. What do you know?
So in my example, the f...
How to step through Python code to help debug issues?
...… with “n” (next)
Repeating the last debugging command… with ENTER
Quitting it all… with “q” (quit)
Printing the value of variables… with “p” (print)
a) p a
Turning off the (Pdb) prompt… with “c” (continue)
Seeing where you are… with “l” (list)
Stepping into subrout...
How do I iterate through table rows and cells in JavaScript?
...or table.cells (to patch up some older/IE-oriented code), see my answer to Q: Does Firefox browser not recognize table.cells?
– GitaarLAB
May 19 '14 at 5:42
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