Tutorial by Examples: ar

Avoid Ambiguity The name of classes, structures, functions and variables should avoid ambiguity. Example: extension List { public mutating func remove(at position: Index) -> Element { // implementation } } The function call to this function will then look like this: li...

The angular.equals function compares and determines if 2 objects or values are equal, angular.equals performs a deep comparison and returns true if and only if at least 1 of the following conditions is met. angular.equals(value1, value2) If the objects or values pass the === comparison If b...

The function angular.isString returns true if the object or value given to it is of the type string angular.isString(value1) Examples angular.isString("hello") // true angular.isString([1, 2]) // false angular.isString(42) // false This is the equivalent of performing typeof s...

The angular.isArray function returns true if and only if the object or value passed to it is of the type Array. angular.isArray(value) Examples angular.isArray([]) // true angular.isArray([2, 3]) // true angular.isArray({}) // false angular.isArray(17) // false It is the equivalent of ...

The ability to directly use an array object with cfloop was added in ColdFusion 8. Consider this array; <cfset aFoo = [ "one" , "two" , "three" , "four" ] /> Tag syntax ColdFusion 8 through current Using the attribute inde...

In a module (library or application) where you need the aar file you have to add in your build.gradle the repository: repositories { flatDir { dirs 'libs' } } and add the dependency: dependencies { compile(name:'nameOfYourAARFileWithoutExtension', ext:'aar') } Pay a...

The aar file doesn't contain the transitive dependencies and doesn't have a pom file which describes the dependencies used by the library. It means that, if you are importing a aar file using a flatDir repo you have to specify the dependencies also in your project. You should use a maven repositor...

In some cases, you want to show your users a UIPickerView with predefined contents for a UITextField instead of a keyboard. Create a custom UIPickerView At first, you need a custom wrapper-class for UIPickerView conforming to the protocols UIPickerViewDataSource and UIPickerViewDelegate. class My...

The .every method tests if all array elements pass a provided predicate test. To test all objects for equality, you can use the following code snippets. [1, 2, 1].every(function(item, i, list) { return item === list[0]; }); // false [1, 1, 1].every(function(item, i, list) { return item === list[0...

Object obj = new Object(); // Note the 'new' keyword Where: Object is a reference type. obj is the variable in which to store the new reference. Object() is the call to a constructor of Object. What happens: Space in memory is allocated for the object. The constructor Object() is call...

Sass supports the following standard arithmetic operators: OperatorDescription+Addition–Subtraction*Multiplication/Division%Remainder Examples p { font-size: 16px + 4px; // 20px } h3 { width: 2px * 5 + 12px; // 22px } h2 { width: 8px + (12px / 2) * 3; // 26px } Norm...

Sass supports all the usual comparison operators: <,>,==,!=,<=,>=. Examples (10px == 10) // Returns true ("3" == 3) // Returns false $padding: 10px; $padding <= 8px; // Returns false

A Button directive which accepts an @Input() to specify a click limit until the button gets disabled. The parent component can listen to an event which will be emitted when the click limit is reached via @Output: import { Component, Input, Output, EventEmitter } from '@angular/core'; @Component(...

It is possible to upload multiple parts, each with a different name. For each part name, you will need one parameter annotated with @RequestPart, whose name matches the part name. To receive a file uploaded via an HTTP Post, you need to do the following: @RequestMapping( value = "...&quo...

If you want to convert the content of a part into a domain object (e.g. a User or Account or Address), then the process is very simple: It is possible to upload multiple parts, each with a different name. For each part name, you will need one parameter annotated with @RequestPart, whose name matche...

The function angular.merge takes all the enumerable properties from the source object to deeply extend the destination object. The function returns a reference to the now extended destination object angular.merge(destination, source) Examples angular.merge({}, {}) // {} angular.merge({name...

The function angular.isDefined tests a value if it is defined angular.isDefined(someValue) This is the equivalent of performing value !== undefined; // will evaluate to true is value is defined Examples angular.isDefined(42) // true angular.isDefined([1, 2]) // true angular.isDefined(un...

The angular.isDate function returns true if and only if the object passed to it is of the type Date. angular.isDate(value) Examples angular.isDate("lone star") // false angular.isDate(new Date()) // true

The angular.isNumber function returns true if and only if the object or value passed to it is of the type Number, this includes +Infinity, -Infinity and NaN angular.isNumber(value) This function will not cause a type coercion such as "23" == 23 // true Examples angular.isNumber...

The components in angularJS can be visualised as a custom directive (< html > this in an HTML directive, and something like this will be a custom directive < ANYTHING >). A component contains a view and a controller. Controller contains the business logic which is binded with an view , w...