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Why does int num = Integer.getInteger(“123”) throw NullPointerException?
... the Integer is null, NullPointerException is thrown
To parse (String) "123" to (int) 123, you can use e.g. int Integer.parseInt(String).
References
Java Language Guide/Autoboxing
Integer API references
static int parseInt(String)
static Integer getInteger(String)
On Integer.getInteger...
Check if string contains only digits
...g.prototype.isNumber = function(){return /^\d+$/.test(this);}
console.log("123123".isNumber()); // outputs true
console.log("+12".isNumber()); // outputs false
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...
Getters \ setters for dummies
...ser = { /* ... object with getters and setters ... */ };
user.phone = '+1 (123) 456-7890'; // updates a database
console.log( user.areaCode ); // displays '123'
console.log( user.area ); // displays 'Anytown, USA'
This is useful for automatically doing things behind-the-scenes when a property is a...
What is the difference between a strongly typed language and a statically typed language?
...at's static typing.
In PHP:
$s = "abcd"; // $s is a string
$s = 123; // $s is now an integer
$s = array(1, 2, 3); // $s is now an array
$s = new DOMDocument; // $s is an instance of the DOMDocument class
That's dynamic typing.
Strong/Weak Typing
(Edit alert!)
Strong typi...
Check if a Python list item contains a string inside another string
...resence of abc in any string in the list, you could try
some_list = ['abc-123', 'def-456', 'ghi-789', 'abc-456']
if any("abc" in s for s in some_list):
# whatever
If you really want to get all the items containing abc, use
matching = [s for s in some_list if "abc" in s]
...
AngularJS access scope from outside js function
...
@dk123 angular.element("#scope") is not working, though angular.element($("#scope")) is working, you need to have jquery also
– Arun P Johny
Mar 15 '13 at 5:11
...
round up to 2 decimal places in java? [duplicate]
...ne works...
double roundOff = Math.round(a * 100.0) / 100.0;
Output is
123.14
Or as @Rufein said
double roundOff = (double) Math.round(a * 100) / 100;
this will do it for you as well.
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What is the advantage of using Restangular over ngResource?
...g about them.
Suppose that you have something like this for cars : /users/123/cars/456
In $resource, You'd have to construct that URL manually and you'd also have to construct the $resource object for this manually. Restangular helps you in this by "remembering" the URLs.
So if you do in some pla...
Phase • Animations made easy! - Extensions - Kodular Community
...locks. Most of these blocks are self-explanatory, but in case you need to learn more, you can hover over them in the blocks editor to see their documentation.
Events
AnimationStarts
AnimationEnds
AnimationCancelled
AnimationPaused
AnimationResumed
Methods
AnimateComponent
AnimationCancelled2
...
Struggling with NSNumberFormatter in Swift for currency
...e on how to use it on Swift 3.
( Edit: Works in Swift 4 too )
let price = 123.436 as NSNumber
let formatter = NumberFormatter()
formatter.numberStyle = .currency
// formatter.locale = NSLocale.currentLocale() // This is the default
// In Swift 4, this ^ has been renamed to simply NSLocale.current
...