Tutorial by Examples: io

Define the variables within a formula field: Shared NumberVar x := 1000; Shared NumberVar y; Assigning the values is optional. To display the variable in a second formula later on in the report, the call is nearly identical: Shared NumberVar x; x

In many application it is necessary to compute the function of two or more arguments. Traditionally, we use for-loops. For example, if we need to calculate the f = exp(-x^2-y^2) (do not use this if you need fast simulations): % code1 x = -1.2:0.2:1.4; y = -2:0.25:3; for nx=1:lenght(x) for n...

How to interact with the BIOS The Basic Input/Output System, or BIOS, is what controls the computer before any operating system runs. To access services provided by the BIOS, assembly code uses interrupts. An interrupt takes the form of int <interrupt> ; interrupt must be a literal number, n...

A TypeScript function can take in parameters of multiple, predefined types using union types. function whatTime(hour:number|string, minute:number|string):string{ return hour+':'+minute; } whatTime(1,30) //'1:30' whatTime('1',30) //'1:30' whatTime(1,'30') //'1:30' wha...

Time complexity is a property of Problems someone might want to solve computationally, Algorithms designed to solve such problems and Programs implementing such algorithms. An abstract concept requires no installation or setup. Simply take any problem, algorithm, or code and ask "How lo...

There is a dozen implementations of Standard ML. MLton produces very optimized code, but has no REPL. SML/NJ is the most widely used, but has slightly difficult error messages for learning purposes. Moscow ML and Poly/ML are easy to get started with, but don't support the .mlb package format. That i...

A lot of example code posted on StackOverflow includes snippets like this: if ("A".equals(someString)) { // do something } This does "prevent" or "avoid" a possible NullPointerException in the case that someString is null. Furthermore, it is arguable that ...

This is a simple trigger function. CREATE OR REPLACE FUNCTION my_simple_trigger_function() RETURNS trigger AS $BODY$ BEGIN -- TG_TABLE_NAME :name of the table that caused the trigger invocation IF (TG_TABLE_NAME = 'users') THEN --TG_OP : operation the trigger was fired IF (TG_O...

Detailed instructions on getting phonegap-build set up or installed.

Overview Android Studio's built-in update mechanism can be set to receive updates through any one of these four channels: Canary: Bleeding edge, released about weekly. These are early previews released in order to obtain real-world feedback during development. The canary channel will always have...

Detailed instructions on getting retrofit set up or installed.

var person = { name: ko.observable('John') }; console.log(person.name()); console.log('Update name'); person.name.subscribe(function(newValue) { console.log("Updated value is " + newValue); }); person.name('Jane');

Go to the Microsoft link for the OpenXML SDK download. Click the red download button. On the next screen click the box next to OpenXMLSDKToolV25.msi and click next to begin the download. Once the download is complete, launch the OpenXMLSDKToolV25.msi and follow the instructions on the screen. Th...

preserveAspectRatio is an attribute that indicates whether the image should be scaled uniformly. This attribute only works if the <svg> element also has a viewBox. The default value is xMidYMid, which maintains the aspect ratio and centers the path inside the SVG container: <!-- when not ...

Swift Function for loading an animation from a file: func animationFromSceneNamed(path: String) -> CAAnimation? { let scene = SCNScene(named: path) var animation:CAAnimation? scene?.rootNode.enumerateChildNodes({ child, stop in if let animKey = child.animationKeys.first...

dblink EXTENSION is a technique to connect another database and make operation of this database so to do that you need: 1-Create a dblink extention: CREATE EXTENSION dblink; 2-Make your operation: For exemple Select some attribute from another table in another database: SELECT * FROM dblink...

FDW is an implimentation of dblink it is more helpful, so to use it: 1-Create an extention: CREATE EXTENSION postgres_fdw; 2-Create SERVER: CREATE SERVER name_srv FOREIGN DATA WRAPPER postgres_fdw OPTIONS (host 'hostname', dbname 'bd_name', port '5432'); 3-Create user mapping for postgres...

productFlavors { // Define separate dev and prod product flavors. dev { // dev utilizes minSDKVersion = 21 to allow the Android gradle plugin // to pre-dex each module and produce an APK that can be tested on // Android Lollipop without time c...

Let's understand something. JavaEE consists of a number of specifications. When you install an Application Server (Payara for example), you install all of the specifications at once. For example there's a specification for an ORM called JPA (Java Persistence API), a specification to build Component ...

You could migrate from team foundation version control to git by using an open source tool called Git-TF. Migration will also transfer your existing history by converting tfs checkins to git commits. To put your solution into Git by using Git-TF follow these steps: Download Git-TF You can downloa...