Tutorial by Examples: me

% set mypath /home/tcluser/sources/tcl/myproject/test.tcl /home/tcluser/sources/tcl/myproject/test.tcl % set dir [file dirname $mypath] /home/tcluser/sources/tcl/myproject % set filename [file tail $mypath] test.tcl % set basefilename [file rootname $filename] test % set extension [file exte...

Given: x <- as.matrix(mtcars) One can use heatmap.2 - a more recent optimized version of heatmap, by loading the following library: require(gplots) heatmap.2(x) To add a title, x- or y-label to your heatmap, you need to set the main, xlab and ylab: heatmap.2(x, main = "My main t...

In Gloss, one can use the display function to create very simple static graphics. To use this one needs to first import Graphics.Gloss. Then in the code there should the following: main :: IO () main = display window background drawing window is of type Display which can be constructed in two ...

Sometimes, programmers who are new to Java make the mistake of defining a class with a name that is the same as a widely used class. For example: package com.example; /** * My string utilities */ public class String { .... } Then they wonder why they get unexpected errors. For ex...

Detailed instructions on getting wordpress-theming set up or installed. Wordpress is opensource.You can find large set of theme for use free or premium themes.All theme are provide a documentation for install and use. What you have to understand while choose a theme? Wordpress version you are ...

ShouldPerformSegueWithIdentifier: func shouldPerformSegueWithIdentifier(_ identifier:String, sender sender:AnyObject?) -> Bool Determines whether the segue with the specified identifier should be performed. Parameters Identifier: String that identifies the triggered segue Sender: The...

The standard Java toolchain (and 3rd-party tools designed to interoperate with them) have specific rules for mapping the names of classes to the pathnames of files and other resources that represent them. The mappings are as follows For classes in the default package, the pathnames are simple fi...

This example shows how to use fast enumeration in order to traverse through an NSArray. When you have an array, such as NSArray *collection = @[@"fast", @"enumeration", @"in objc"]; You can use the for ... in syntax to go through each item of the array, automatical...

A model for a new table can be created by running the following commend from the terminal root location: phalcon model <table-name> Let us take the Model Users. SELECT There are two default functions to do select operation in phalcon, find() and findFirst() findFirst() is used to get th...

Error messages are generally included in a script for debugging purposes or for providing rich user experience. Simply writing error message like this: cmd || echo 'cmd failed' may work for simple cases but it's not the usual way. In this example, the error message will pollute the actual output...

menu.xml - (res -> menu) <menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" tools:context=".HomeActivity"> <item...

MainActivity.java: public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } } activity_main.xml: <?xml version="1...

This will get all the orders for all customers: SELECT c.CustomerName, o.OrderID FROM Customers AS c INNER JOIN Orders AS o ON c.CustomerID = o.CustomerID ORDER BY c.CustomerName, o.OrderID; This will count the number of orders for each customer: SELECT c.CustomerName, C...

<svg width="800px" height="800px"> <defs> <pattern id="pattern1" x="0" y="0" width="0.2" height="0.2" > <circle cx="10" cy="10" r="10" fill="blue" /> <...

To add a language to Sublime Text, you use Package Control. You can do this by pasting the correct Python code (available on the Package Control site linked above), or by downloading the .sublime-package file (also available for download on the site). Once you set up Package Control, restart Sublime...

For live demo click.. App index ts import {bootstrap} from '@angular/platform-browser-dynamic'; import {MyForm} from './my-form.component.ts'; bootstrap(MyForm); Custom validator import {Control} from @'angular/common'; export class CustomValidators { static emailFormat(control: Cont...

CALL "submodule" CALL "submodule" CANCEL "submodule" CALL "submodule" Any static data in the working set of submodule will be in an initial state on the last CALL statement above. The second CALL will have any initial values set as left overs from the...

COBOL can use static linkage for the following statement. GnuCOBOL uses dynamic linkage by default for all external symbols known at compile time, even when the symbol is a literal: CALL "subprogram" USING a b c *> run a (possibly static linked) sub program ...

To be able to use vim commands in Python, the vim module should be imported. :python import vim After having this module imported, the user has access to the command function: :python vim.command("normal iText to insert") This command would execute i in normal mode then type Text t...

To animate the transition between fragments, or to animate the process of showing or hiding a fragment you use the FragmentManager to create a FragmentTransaction. For a single FragmentTransaction, there are two different ways to perform animations: you can use a standard animation or you can suppl...