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How do I get an object's unqualified (short) class name?
...want to require that the object is a member of a certain class, the way to test it is with instanceof. If you want a more flexible way to signal certain constraints, the way to do that is to write an interface and require that the code implement that interface. Again, the correct way to do this is w...
What is the difference between require and require-dev sections in composer.json?
...nts
Typically, software will run in different environments:
development
testing
staging
production
Different Dependencies in Different Environments
The dependencies which are declared in the require section of composer.json are typically dependencies which are required for running an applicati...
What's wrong with foreign keys?
... always use foreign keys now. My answer to the objection "they complicated testing" is "write your unit tests so they don't need the database at all. Any tests that use the database should use it properly, and that includes foreign keys. If the setup is painful, find a less painful way to do the set...
What does .class mean in Java?
... type, we have to use .class syntax for primitive data types.
package test;
public class Test {
public static void main(String[] args)
{
//there is no instance available for class Test, so use Test.class
System.out.println("Test.class.getName() ::: " + Tes...
Object.watch() for all browsers?
...${value}`);
target[key] = value;
}
});
targetProxy.hello_world = "test"; // console: 'hello_world set to test'
If you need to observe changes made to a nested object, then you need to use a specialized library. I published Observable Slim and it works like this:
var test = {testing:{}};
...
Check existence of directory and create if doesn't exist
... Hi, I want ot create nested directory, like if I am in folder test1 then inside it test2 inside it test3 ... but right now I am facing problem. Is there a way that I can create 3 level of directory even if directory1 does not exits ??
– Praveen Kesani
...
Class method differences in Python: bound, unbound and static
...ically, a call to a member function (like method_one), a bound function
a_test.method_one()
is translated to
Test.method_one(a_test)
i.e. a call to an unbound method. Because of that, a call to your version of method_two will fail with a TypeError
>>> a_test = Test()
>>> a_...
Checking if a double (or float) is NaN in C++
...+ (with -fastmath) screw that up. the only general way, until c++0x, is to test for bitpattern.
– Cheers and hth. - Alf
Mar 26 '11 at 9:15
66
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Using jQuery to test if an input has focus
...)
jQuery 1.5 and below
Edit: As times change, we find better methods for testing focus, the new favorite is this gist from Ben Alman:
jQuery.expr[':'].focus = function( elem ) {
return elem === document.activeElement && ( elem.type || elem.href );
};
Quoted from Mathias Bynens here:
...
Equation for testing if a point is inside a circle
... circle with center (center_x, center_y) and radius radius , how do you test if a given point with coordinates (x, y) is inside the circle?
...