Tutorial by Examples: io

An anonymous function can be defined without a name through a Lambda Expression. For defining these type of functions, the keyword lambda is used instead of the keyword defun. The following lines are all equivalent and define anonymous functions which output the sum of two numbers: (lambda (x y) (...

DEFINE QUERY q1 FOR Customer. OPEN QUERY q1 FOR EACH Customer. GET FIRST q1. loop: REPEAT: IF AVAILABLE Customer THEN DO: DISPLAY Customer.NAME CustNum WITH FRAME frClient TITLE "Client data". DISPLAY "(P)revious" SKIP ...

Detailed instructions on getting xcode-ui-testing set up or installed.

/* This function returns TRUE if input is the letter "b" and false otherwise */ FUNCTION isTheLetterB RETURNS LOGICAL (INPUT pcString AS CHARACTER): IF pcString = "B" THEN RETURN TRUE. ELSE RETURN FALSE. END FUNCTION. /* Calling the function with "b&qu...

A function can be forward declared, this is similar to specifications in a C header file. That way the compiler knows that a function will be made available later on. Without forward declarations the function MUST be declared before it's called in the code. The forward declaration consists of the...

const timeFormat = "15 Monday January 2006" func ParseDate(s string) (time.Time, error) { t, err := time.Parse(timeFormat, s) if err != nil { // time.Time{} returns January 1, year 1, 00:00:00.000000000 UTC // which according to the source code is the zero va...

prerequisites: To run kibana you need to install supported version of elastic search. for install elastic search refer this link Elasticsearch documentation KibanaElasticsearch4.0.0 - 4.1.x1.4.x - 1.7.x4.2.x2.0.x4.3.x2.1.x4.4.x2.2.x4.5.x2.3.x4.6.x2.4.x5.x5.x The Kibana can be downloade...

Detailed instructions on getting air set up or installed.

function getCombinations(params, combinationsResults){ if(params.length == 0) return combinationsResults; var head = params[0]; var tail = params.slice(1); var combinationsResultsCurrent = []; if(Array.isArray(head)){ _.uniq(head).forEach(function(item){ ...

You can also follow the official installation guide here. Step 1) Get The Angular UI Bootstrap Library Files via npm: npm install angular-ui-bootstrap via bower: bower install angular-bootstrap Step 2) Import The Angular UI Bootstrap Module angular.module('myModule', ['ui.bootstrap']); ...

See recursion A function can call itself and thereby recurse. FUNCTION factorial INTEGER (num AS INTEGER). IF num = 1 THEN RETURN 1. ELSE RETURN num * factorial(num - 1). END FUNCTION. DISPLAY factorial(5). With standard settings (startup parameter) the Pro...

A keyword is "MONARCHY" then the matrix will look like The matrix is constructed by filling in the letters of the keyword (minus duplicates) from left to right and from top to bottom, and then filling in the remainder of the matrix with the remaining letters in alphabetic order. Plai...

Let's say we have a model called product. class Product(models.Model): name = models.CharField(max_length=100) price = models.IntegerField() Now we are going to declare a model serializers for this model. from rest_framework.serializers import ModelSerializer class ProductSerialize...

There are a couple of useful built in functions for working with string. All functions working with the position of characters start with index 1 as the first character, not 0 as is common in many languages. STRING - converts any value to a string This example converts the integer 2000 to the stri...

A number of the demonstration macros within this part requires a function which I will explain later. For the moment, please just copy GetFldrNames() to a suitable module. I use this function frequently and keep it, and other like it that I use in many different macros, in a module named “ModGloba...

Most of functions in D3.js accept an anonymous function as an argument. The common examples are .attr, .style, .text, .on and .data, but the list is way bigger than that. In such cases, the anonymous function is evaluated for each selected element, in order, being passed: The current datum (d) ...

You are an Outlook user and understand terms such as “email”, “received time”, “subject” and “Folder Pane”. You know how to access Outlook’s Visual Basic Editor and create a module. See Introduction Part 1 if necessary. You have at least a basic knowledge of VBA. I declare Subroutines and variab...

EXP - Returns the result of raising a number to a power. EXP( base, exponent) MESSAGE EXP(10, 2) VIEW-AS ALERT-BOX. // Messages 100 SQRT - Returns the square root of a number. SQRT( number) MESSAGE "The square root of 256 is " SQRT(256) VIEW-AS ALERT-BOX. // Messages 16 M...

In Swift, protocol extensions cannot have true properties. However, in practice you can use the "associated object" technique. The result is almost exactly like a "real" property. Here is the exact technique for adding an "associated object" to a protocol extension: ...

In this example we will use the Business layer in Presentation layer. And we will use MVC as example of Presentation layer (but you can use any other Presentation layer). We need first to register the IoC (we will use Unity, but you can use any IoC), then write our Presentation layer 3-1 Register ...