Go Concepts - Functions

External

• Function type specification https://golang.org/ref/spec#Function_types

Internal

• Go Concepts

Function

A function is operation performed on a number of inputs resulting in a number of outputs. Same inputs will always result in the same outputs, function do not depend on state.

Syntax

func [value-receiver] <name>([parameter-identifier1] [type1], [parameter-identifier2] [type2], ...) ([return-type1], [return-type2], ...) {

   statement1
   statemen2
   ...

   return <return-value1>, <return-value2>

}

Examples:

func add(a int, b int) (int) {
   return a + b;
}

Built-in Functions

make()	append()	copy()	delete()	.
new()	len()	cap()	.	.
.	.	.	.	.

Closures

Anonymous function that capture local variables.

More about closures is available here.

Methods

A method defines the behavior of a type.