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When is null or undefined used in JavaScript? [duplicate]
...t. So you can just do this: var undefined = "Magic!"; // Yes this works Now your code may or may not work. It is better to do a typeof(x) !== "undefined"
– ProVega
Apr 17 '14 at 21:29
...
Ruby on Rails and Rake problems: uninitialized constant Rake::DSL
... to retain that feature? What is Rake trying to do, and what should I use now?
– Ryanmt
Jul 21 '11 at 0:38
@Arrumaco,...
Twitter Bootstrap alert message close and open again
...t you should use jQuery's live to set the handler on all elements that are now and in future in the dom or get removed.
I use
$(document).on("click", "[data-hide-closest]", function(e) {
e.preventDefault();
var $this = $(this);
$this.closest($this.attr("data-hide-closest")).hide();
}...
Split string to equal length substrings in Java
...d point. I didn't test it with strings of non-multiple lengths. It's fixed now.
– Saul
Sep 21 '10 at 13:50
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How do I assert equality on two classes without an equals method?
... In assertj v3.13.2 this method is deprecated and the recommendation is now to use usingRecursiveComparison() with isEqualTo(), such that the line is assertThat(actualObject).usingRecursiveComparison().isEqualTo(expectedObject);
– Woodz
Dec 12 '19 at 3:27
...
Align labels in form next to input
I have very basic and known scenario of form where I need to align labels next to inputs correctly. However I don't know how to do it.
...
When to use extern in C++
... variables in a header, so that each source file that includes the header knows about it, but you only need to “define” it once in one of your source files.
To clarify, using extern int x; tells the compiler that an object of type int called x exists somewhere. It's not the compilers job to kno...
Find kth smallest element in a binary search tree in Optimum way
... subtree, to decide whether to do recurse into the left or right subtree.
Now, suppose we are at node T:
If k == num_elements(left subtree of T), then the answer we're looking for is the value in node T.
If k > num_elements(left subtree of T), then obviously we can ignore the left subtree, bec...
Is there a documented way to set the iPhone orientation?
...
This is no longer an issue on the later iPhone 3.1.2 SDK. It now appears to honor the requested orientation of the view being pushed back onto the stack. That likely means that you would need to detect older iPhone OS versions and only apply the setOrientation when it is prior to the ...
How to serialize an object into a string
...a.util.Base64.
Still you should use CLOB as data type because you don't know how long the serialized data is going to be.
Here is a sample of how to use it.
import java.util.*;
import java.io.*;
/**
* Usage sample serializing SomeClass instance
*/
public class ToStringSample {
public s...