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Javascript: best Singleton pattern [duplicate]
...avascriptTips#Singleton_pattern
function MySingletonClass () {
if (arguments.callee._singletonInstance) {
return arguments.callee._singletonInstance;
}
arguments.callee._singletonInstance = this;
this.Foo = function () {
// ...
};
}
var a = new MySingletonClass();
var b = MySi...
What to return if Spring MVC controller method doesn't return value?
...onous calls to my simple Spring MVC backend. Most of the Spring controller methods look like this:
7 Answers
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Best way to give a variable a default value (simulate Perl ||, ||= )
.... It is called the Null coalescing operator. You can use it like this:
$name = $_GET['name'] ?? 'john doe';
This is equivalent to
$name = isset($_GET['name']) ? $_GET['name']:'john doe';
share
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SQL Server - Create a copy of a database table and place it in the same database?
I have a table ABC in a database DB. I want to create copies of ABC with names ABC_1, ABC_2, ABC_3 in the same DB. How can I do that using either Management Studio (preferably) or SQL queries ?
...
How do you do block comments in YAML?
How do I comment a block of lines in YAML?
11 Answers
11
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Why doesn't this code simply print letters A to Z?
...
From the docs:
PHP follows Perl's convention when dealing with arithmetic operations on character variables and not C's.
For example, in Perl 'Z'+1 turns into 'AA', while in C 'Z'+1 turns into '[' ( ord('Z') == 90, ord('[') == 91 ).
Note that character variables can be incremented but not dec...
How to get the unix timestamp in C#
I have had look around stackoverflow, and even looked at some of the suggested questions and none seem to answer, how do you get a unix timestamp in C#?
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What are the differences between LinearLayout, RelativeLayout, and AbsoluteLayout?
...ference between LinearLayout, RelativeLayout, and AbsoluteLayout.
Could someone please tell me the exact differences between them?
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How can I run a function from a script in command line?
I have a script that has some functions.
9 Answers
9
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