fn.lua

About

fn.lua provides functional programming extras for Lua and LuaJIT. Unlike some other functional libraries, it preserves ending nil values by using "select". It aims to support the manipulation of ordered data using both traditional tables and multi arity arguments, rather than creating a new array type. It will avoid implementing library functions in terms of each other to reduce the height of the call stack for end users.

Getting Started

Copy fn.lua into your lua module directory. On Ubuntu, this is /usr/local/share/lua/5.1/

importing

require'fn'

create a new function that will call Fold Left using an addition function as the first parameter

sum = fn.partial( fn.foldl, function(a, b) return a+b end)

call sum with a list of numbers

x = sum(1, 2, 3, 4, 5, 6, 7, 8, 9)
print(x)
-- 45

see fn.lua and tests.lua for additional information.