equals: Terser Function Declaration

In Marlin-Na/terser: A Terse Syntax for Function Declaration in R

Description

A terse syntax of function declaration for people who are interested in shooting yourself in the foot.

Usage

left = right

Arguments

left	A symbol or a function call.
right	A R expression as body of the function.

Details

If left hand side is a symbol, it just do normal assignment like <-.

If left hand side is a function call, e.g. f(x, y), it creates a function named "f" which has formal arguments of "x", "y" and function body defined by the right hand side, in the environment calling it.

Value

The assigned value or function.

Examples

x = 3
x

f(x, y) = x + y
f(2, 3)
identical(f, function(x, y) x + y)

g(x = 231) = log(x)
g()
identical(g, function(x = 231) log(x))

h(a, b = a^2) = a + b
h(1)
h(1, 2)
identical(h, function(a, b = a^2) a + b)

tan2(a) = sin(a)/cos(a)
tan2(pi)

Marlin-Na/terser documentation built on May 17, 2019, 6:21 p.m.