Tutorial by Examples: f

--- person_table: - &person001 fname: homer lname: simpson role: dad age: 33 - &person002 fname: marge lname: simpson role: mom age: 34 - &person003 fname: pe...

--- person_table: - &person001 fname: homer lname: simpson role: dad age: 33 - &person002 fname: marge lname: simpson role: mom age: 34 - &person003 fname: pe...

--- person_table: - &person001 fname: homer lname: simpson role: dad age: 33 - &person002 fname: marge lname: simpson role: mom age: 34 - &person003 fname: pe...

add: add the specified files on the next commit addremove: add all new files, delete all missing files backout: reverse effect of earlier changeset commit, ci: commit the specified files or all outstanding changes copy, cp: mark files as copied for the next commit forge...

bookmarks, bookmark: create a new bookmark or list existing bookmarks branch: set or show the current branch name tag: add one or more tags for the current or given revision update, up, checkout, co: update working directory (or switch revisions)

FNR contains the number of the input file row being processed. In this example you will see awk starting on 1 again when starting to process the second file. Example with one file $ cat file1 AAAA BBBB CCCC $ awk '{ print FNR }' file1 1 2 3 Example with two files $ cat file1 AAAA BBBB...

If you want to create an instance of an inner nested class you need to provide a class object of the enclosing class as an extra parameter with Class#getDeclaredConstructor. public class Enclosing{ public class Nested{ public Nested(String a){ System.out.println("Constru...

In Scala (in contrast to Java and most other languages), if is an expression instead of a statement. Regardless, the syntax is identical: if(x < 1984) { println("Good times") } else if(x == 1984) { println("The Orwellian Future begins") } else { println("Po...

Create a new repository or clone an existing one. Create a new branch called gh-pages without any history $ git checkout --orphan gh-pages # ensure you are in the correct directory then, # remove all files from the old working tree $ git rm -rf Add an index.html file to the root of t...

When you have a Stream you need to map but want to preserve the initial values as well, you can map the Stream to a Map.Entry<K,V> using a utility method like the following: public static <K, V> Function<K, Map.Entry<K, V>> entryMapper(Function<K, V> mapper){ retu...

Functions which return a character vector Base R has two functions for invoking a system command. Both require an additional parameter to capture the output of the system command. system("top -a -b -n 1", intern = TRUE) system2("top", "-a -b -n 1", stdout = TRUE) ...

Pentaho Data Integration comes in two varieties: Community Edition (CE) - Free version for developers Enterprise Edition (EE) - Paid version for enterprise use Installation steps: You can download Pentaho Data Integration Community Edition from Sourceforge.net. For the Enterprise Editio...

On a few occasions, I have had an interesting figure I saved but I lost an access to its data. This example shows a trick how to achieve extract information from a figure. The key functions are findobj and get. findobj returns a handler to an object given attributes or properties of the object, suc...

The advantages of using Session State are 1)Better security 2)Reduced bandwidth The disadvantages of using Session state are 1)More resource consumption of server. 2)Extra code/care if a Web farm is used(we will discuss this shortly) **Session State Modes** ...

C++14 Parameter pack unpacking traditionally requires writing a helper function for each time you want to do it. In this toy example: template<std::size_t...Is> void print_indexes( std::index_sequence<Is...> ) { using discard=int[]; (void)discard{0,((void)( std::cout <&...

<svg width="400px" height="200px"> <text x="1em, 2em, 3em, 4em, 5em" y="3em, 4em, 5em"> Individually Spaced Text </text> </svg> The Text element supports individual placement of letters by accepting an array of values for...

Interfaces and implementations (types that implement an interface) are "detached". So it is a rightful question how to check at compile-time if a type implements an interface. One way to ask the compiler to check that the type T implements the interface I is by attempting an assignment us...

To convert String to and from Data / NSData we need to encode this string with a specific encoding. The most famous one is UTF-8 which is an 8-bit representation of Unicode characters, suitable for transmission or storage by ASCII-based systems. Here is a list of all available String Encodings Stri...

NgZone reference can be injected via the Dependency Injection (DI). my.component.ts import { Component, NgOnInit, NgZone } from '@angular/core'; @Component({...}) export class Mycomponent implements NgOnInit { constructor(private _ngZone: NgZone) { } ngOnInit() { this._ngZone.runO...

runOutsideAngular can be used to run code outside Angular 2 so that it does not trigger change detection unnecessarily. This can be used to for example run multiple HTTP request to get all the data before rendering it. To execute code again inside Angular 2, run method of NgZone can be used. my.com...