createMutator {FastUtils}

Create a Mutator Function

Description

This function creates a mutator function based on a specified binary operator. The output mutator function updates a variable in the parent frame by applying the binary operator with a given value. It's recommended to use this function to easily construct special functions in the form of ⁠%f%⁠ where f can be any symbol of choice. See examples.

Usage

createMutator(binaryOperator)

Arguments

binaryOperator

A binary operator function to apply for the mutation.

Value

A function that takes a variable and a value, applying the binary operator to update the variable in the parent frame.

Examples

"%+=%" <- createMutator(add)
x <- 1
x %+=% 1
x # becomes 2