F# Inline Function

Last Updated : 17 Mar 2025

F# inline function is a function that is integrated directly into the calling code. It helps to optimize code and sometimes can improve performance too.

The inline modifier is used to declare inline function.

F# Inline Function Example

type InlineClass() =
  class
    member inline this.inlineFunction(a) = a*a
  end
 
let obj = new InlineClass()
let result = obj.inlineFunction 2
printf "%d" result

Output:

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