Functions - language feature

function helloWorld() {console.log("hi")}

Example from Pug:

mixin article(title)
  .article
    .article-wrapper
      h1= title
      if block
        block
      else
        p No content provided

+article('Hello world')

+article('Hello world')
  p This is my
  p Amazing article

Example from Speedie:

function Example (|string| data)
 file <~ data

Example from Jule:

fn a_function() {
    // ...
}

Example from Bel:

(fn (x) (+ x 1))

Example from Cyber:

func fib(n int) int:
   coyield
   if n < 2:
       return n
   return fib(n - 1) + fib(n - 2)

Example from BALGOL:

FUNCTION TORADS(DEGREES) = DEGREES . 3.1415926/180$

Languages with Functions include JavaScript, Python, PHP, Ruby, R, Scala, Ada, Kotlin, PowerShell, TypeScript, Lua, Julia, Bash, Erlang, Solidity, Verilog, Reason, Crystal, F#, OCaml, Groovy, VHDL, Pug, ABAP, X10, Opa, F*, SystemVerilog, Cython, ATS, C3, Speedie, janet, Koka, progsbase, IGOR Pro, Jule, Bel, Eclipse Command Language, Cyber, Q#, Ligo, Sophia, BALGOL

Languages without Functions include CSS

This question asks: Does the language have a concept of and syntax for functions?

Read more about Functions on the web: 1.

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