Tutorial by Examples: u

/* 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...

/* This will popup a message-box saying "HELLO WORLD" */ FUNCTION cat RETURNS CHARACTER ( c AS CHARACTER, d AS CHARACTER): RETURN c + " " + d. END. MESSAGE cat("HELLO", "WORLD") VIEW-AS ALERT-BOX.

A function can have multiple return statements and they can be placed in different parts of the actual function. They all need to return the same data type though. FUNCTION returning DATE ( dat AS DATE): IF dat < TODAY THEN DO: DISPLAY "<". RETURN dat - 200. ...

A function can only return a single value but there's one way around that: the parameters are not limited to input parameters. You can declare INPUT, OUTPUT and INPUT-OUTPUT parameters. Unlike INPUT parameters you must specify OUTPUT or INPUT-OUTPUT before the parameters. Some coding conventions m...

For syncing all folders in both direction, insert this into your Vagrantfile: config.vm.synced_folder "my-project1", "/home/vagrant/my-project1", type: "rsync", :rsync__exclude => ['my-project1/mini_project2/target,my-project1/mini_project2/target,my-project1/mini...

<%@ WebService Language="C#" Class="Util" %> using System; using System.Web.Services; public class Util: WebService { [WebMethod] public int CalculatorAdd(int operandA, int operandB) { return operandA + operandB; } [WebMethod] ...

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...

For kibana configuration open config/kibana.yml and point your elasticsearch address. By default it is http://localhost:9200 Before starting elasticsearch check whether elasticsearch is running. Becuacuse it is relies on Elasticsearch. For windows: run bin/kibana patch file. For Mac: ...

TTL value can be used to decide for how long the document needs to be there in the bucket. By default TTL value is 0, which means it will be there for indefinite time period. String bucketName = "bucket"; List<String> nodes = Arrays.asList("node1","node2"); // I...

Detailed instructions on getting air set up or installed.

Firstly, you'll need to add the crate into your Cargo.toml file as a dependency. [dependencies] rand = "0.3" This will retrieve the rand crate from crates.io. Next, add this to your crate root. extern crate rand; As this example is going to provide a simple output through the term...

This example will provide basic web routing using Iron. To begin with, you will need to add the Iron dependency to your Cargo.toml file. [dependencies] iron = "0.4.*" We will use Iron's own Router library. For simplicity, the Iron project provides this library as part of the Iron cor...

When using "controller as syntax" you would give your controller an alias in the html when using the ng-controller directive. <div ng-controller="MainCtrl as main"> </div> You can then access properties and methods from the main variable that represents our contr...

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...

Here is a simple example of how to use Bokeh in Jupyter Notebook: import numpy as np from bokeh.plotting import figure # Make Bokeh Push push output to Jupyter Notebook. from bokeh.io import push_notebook, show, output_notebook from bokeh.resources import INLINE output_notebook(resources=INLIN...

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...