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When should I use “this” in a class?
...his to call alternate constructors. In the comments, trinithis correctly pointed out another common use of this. When you have multiple constructors for a single class, you can use this(arg0, arg1, ...) to call another constructor of your choosing, provided you do so in the first line of your constr...
Check whether an array is empty [duplicate]
...
array with zero elements converts to false
http://php.net/manual/en/language.types.boolean.php
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What are the differences between ArrayList and Vector?
...any accidental unsynchronized access to the list.
Reference
Data growth
Internally, both the ArrayList and Vector hold onto their contents using an Array. When an element is inserted into an ArrayList or a Vector, the object will need to expand its internal array if it runs out of room. A Vector ...
Phase • Animations made easy! - Extensions - Kodular Community
...ed in `_discourse_splash.html.erb
const DELAY_TARGET = 2000;
const POLLING_INTERVAL = 50;
const splashSvgTemplate = document.querySelector(".splash-svg-template");
const splashTemplateClone = splashSvgTemplate.content.cloneNode(true);
const svgElement = splashTemplateClone.querySelector("svg");
cons...
Why aren't variables declared in “try” in scope in “catch” or “finally”?
...els of scope: global and function. But, try/catch is an exception (no pun intended). When an exception is thrown and the exception object gets a variable assigned to it, that object variable is only available within the "catch" section and is destroyed as soon as the catch completes.
(and more imp...
Check for null in foreach loop
...s "I know there are no elements" when null actually(/originally) should be interpreted as "I don't know if there are any elements" use an empty set to show that you know there are no elements in the set. That would also be DRY'er since you won't have to do the null check as often.
EDIT as a follow ...
Javascript shorthand ternary operator
...ng way (as mentioned by the documentation):
Returns expr1 if it can be converted to true; otherwise, returns expr2. Thus, when used with Boolean values, || returns true if either operand is true; if both are false, returns false.
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Getter and Setter declaration in .NET [duplicate]
...te the way your data is accessed. C# has a nice syntax for turning a field into a property:
string MyProperty { get; set; }
This is called an auto-implemented property. When the need arises you can expand your property to:
string _myProperty;
public string MyProperty
{
get { return _myPrope...
What exactly does the .join() method do?
... using the JOIN method, we can add the distance between the words and also convert the list to the string.
This is Python output
'my name is kourosh'
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How do you test that a Python function throws an exception?
...edException, afunction)
And if afunction takes arguments, just pass them into assertRaises like this:
def test_afunction_throws_exception(self):
self.assertRaises(ExpectedException, afunction, arg1, arg2)
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