Tutorial by Examples: p

Detailed instructions on getting spring-security set up or installed.

Sometimes you may want to bypass an alias temporarily, without disabling it. To work with a concrete example, consider this alias: alias ls='ls --color=auto' And let's say you want to use the ls command without disabling the alias. You have several options: Use the command builtin: command...

[alias] logp=log --pretty=format:'%h %ad | %s%d [%an]' --graph --date=short lg = log --graph --date-order --first-parent \ --pretty=format:'%C(auto)%h%Creset %C(auto)%d%Creset %s %C(green)(%ad) %C(bold cyan)<%an>%Creset' lgb = log --graph --date-order --branches --first-paren...

Adding the DebuggerDisplay Attribute will change the way the debugger displays the class when it is hovered over. Expressions that are wrapped in {} will be evaluated by the debugger. This can be a simple property like in the following sample or more complex logic. [DebuggerDisplay("{StringPr...

In this approach, the single is accessed via the static method: Singleton.getInstance(); To enforce only one instance of the singleton, a private static variable retains the instance, while any additional attempts to instantiate an instance are enforced within the constructor. package { publ...

Cocoa is Apple's API to develop apps for macOS, formerly known as OS X. Cocoa is a container framework, and contains three sub-frameworks. Foundation AppKit CoreData Cocoa Touch is Apple's version of Cocoa to develop apps for iOS, watchOS and tvOS. Cocoa Touch contains the same sub-framewo...

If you want to download an object from GCS that is publicly viewable, the simplest way is to use a web browser or a command line tool to fetch a URL with this pattern: https://storage.googleapis.com/bucketName/objectName. Example: https://storage.googleapis.com/pub/someOfTheTeam.jpg

This filter is very useful. One of the common problems for developers is how to include templates in plugins they develop. The filter is applied immediately after wordpress locates the appropriate template in the active child/parent theme using the wp hierarchy. Be careful to define when you want ...

add_filter('template_include', 'custom_function'); function custom_function($template){ /* * This example is a little more advanced. * It will check to see if $template contains our post-type in the path. * If it does, the theme contains a high level templat...

To apply the last stash and remove it from the stack - type: git stash pop To apply specific stash and remove it from the stack - type: git stash pop stash@{n}

Applies the last stash without removing it from the stack git stash apply Or a specific stash git stash apply stash@{n}

The background-repeat property sets if/how a background image will be repeated. By default, a background-image is repeated both vertically and horizontally. div { background-image: url("img.jpg"); background-repeat: repeat-y; } Here's how a background-repeat: repeat-y looks lik...

Example that builds an executable (editor) and links a library (highlight) to it. Project structure is straightforward, it needs a master CMakeLists and a directory for each subproject: CMakeLists.txt editor/ CMakeLists.txt src/ editor.cpp highlight/ CMakeLists.txt in...

Multiple rows can be inserted with a single insert command: INSERT INTO tbl_name (field1, field2, field3) VALUES (1,2,3), (4,5,6), (7,8,9); For inserting large quantities of data (bulk insert) at the same time, DBMS-specific features and recommendations exist. MySQL - LOAD DATA INFILE MSSQL - B...

The setup script is the centre of all activity in building, distributing, and installing modules using the Distutils. It's purpose is the correct installation of the software. If all you want to do is distribute a module called foo, contained in a file foo.py, then your setup script can be as simpl...

int a = 1; int *a_pointer = &a; To dereference a_pointer and change the value of a, we use the following operation *a_pointer = 2; This can be verified using the following print statements. printf("%d\n", a); /* Prints 2 */ printf("%d\n", *a_pointer); /* Also prints...

The PrettyPrinter utility will 'pretty print' XML documents. The following code snippet pretty prints unformatted xml: import scala.xml.{PrettyPrinter, XML} val xml = XML.loadString("<a>Alana<b><c>Beth</c><d>Catie</d></b></a>") val formatt...

The library CL-PPCRE provides the function split which allows us to split strings in substrings that match a regular expression, discarding the parts of the string that do not. (cl-ppcre:split "\\." "127.0.0.1") ;; => ("127" "0" "0" "1&quot...

If you want to pass in values to a method when it is called, you use parameters: - (int)addInt:(int)intOne toInt:(int)intTwo { return intOne + intTwo; } The colon (:) separates the parameter from the method name. The parameter type goes in the parentheses (int). The parameter name goes aft...

Scopes act as predefined filters on ActiveRecord models. A scope is defined using the scope class method. As a simple example, we will use the following model: class Person < ActiveRecord::Base #attribute :first_name, :string #attribute :last_name, :string #attribute :age, :integer ...