Tutorial by Examples: definition

.default-settings() { padding: 4px; margin: 4px; font-size: 16px; border: 1px solid gray; } #demo { .default-settings; } The above example when compiled would only produce the following output. The .default-settings() mixin definition would not be output in the compiled CSS fi...

The change the definition of a db column, the query below can be used for example, if we have this db schema users ( firstname varchar(20), lastname varchar(20), age char(2) ) To change the type of age column from char to int, we use the query below: ALTER TABLE users CHANGE age...

Official documentation: http://erlang.org/doc/tutorial/nif.html NIFs were introduced in Erlang/OTP R13B03 as an experimental feature. The purpose is to allow calling C-code from inside Erlang code. NIFs are implemented in C instead of Erlang, but they appear as any other functions in the scope of ...

getfunc() { declare -f "$@" } function func(){ echo "I am a sample function" } funcd="$(getfunc func)" getfunc func # or echo "$funcd" Output: func () { echo "I am a sample function" }

CREATE TABLE menagerie.bird ( bird_id INT NOT NULL AUTO_INCREMENT, species VARCHAR(300) DEFAULT NULL COMMENT 'You can include genus, but never subspecies.', INDEX idx_species (species) COMMENT 'We must search on species often.', PRIMARY KEY (bird_id) ) ENGINE=InnoDB COMMENT 'Thi...

In features/step_definitions/documentation.rb: When /^I go to the "([^"]+)" documentation$/ do |section| path_part = case section when "Documentation" "documentation" else raise "Unknown documentation section: #{section...

In features/step_definitions/documentation.rb: When /^I go to the "([^"]+)" documentation$/ do |section| path_part = case section when "Documentation" "documentation" else raise "Unknown documentation section: #{section...

A child theme is identified by WordPress when there is a directory (for example child-theme) inside /wp-content/themes/ with the following files: style.css This file must start with a comment template like this: /* Theme Name: Example Child Author: Me Author URI: https://example.com/ ...

Represents the definition of a single approval process. Use this object to read the description of an approval process. The definition is read-only. We can not modify the record created in ProcessDefinition Object. But we can describe, query, search and retrieve the approval processes information. ...

Before Auto Layout, you always had to tell buttons and other controls how big they should be, either by setting their frame or bounds properties or by resizing them in Interface Builder. But it turns out that most controls are perfectly capable of determining how much space they need, based on their...

Inheritance is one of the main concepts in Object Oriented Programming (OOP). Using inheritance, we can model a problem properly and we can reduce the number of lines we have to write. Let's see inheritance using a popular example. Consider you have to model animal kingdom (Simplified animal kingdo...

With the 2.x versions of typescript, typings are now available from the npm @types repository. These are automatically resolved by the typescript compiler and are much simpler to use. To install a type definition you simply install it as a dev dependency in your projects package.json e.g. npm i -...

inline int add(int x, int y) { return x + y; }

library(deSolve) ## ----------------------------------------------------------------------------- ## Define parameters and variables ## ----------------------------------------------------------------------------- eps <- 0.01; M <- 10 k <- M * eps^2/2 L <- 1 L0 <- 0.5 ...

sink("caraxis_C.c") cat(" /* suitable names for parameters and state variables */ #include <R.h> #include <math.h> static double parms[8]; #define eps parms[0] #define m parms[1] #define k parms[2] #define L parms[3] #define L0 parms[4] #define r p...

sink("caraxis_fortran.f") cat(" c---------------------------------------------------------------- c Initialiser for parameter common block c---------------------------------------------------------------- subroutine init_fortran(daeparms) external daeparms ...

Define a new basic command A macro can be defined using \newcommand. For example: \newcommand{\foo}{Just foo, you see?} defines a macro \foo that expands to Just foo, you see?. It can then be used like any built-in command, for example after that definition: He said: ``\foo'' expands to He...

class Functor f where fmap :: (a -> b) -> f a -> f b One way of looking at it is that fmap lifts a function of values into a function of values in a context f. A correct instance of Functor should satisfy the functor laws, though these are not enforced by the compiler: fmap id = i...

Bifunctor is the class of types with two type parameters (f :: * -> * -> *), both of which can be covariantly mapped over simultaneously. class Bifunctor f where bimap :: (a -> c) -> (b -> d) -> f a b -> f c d bimap can be thought of as applying a pair of fmap operation...

Since every Applicative Functor is a Functor, fmap can always be used on it; thus the essence of Applicative is the pairing of carried contents, as well as the ability to create it: class Functor f => PairingFunctor f where funit :: f () -- create a context, carrying nothing ...