Making Lua Like Ruby

wiki

;(3):times(function(x) print(x) end)



hash = H{x = 1, y = 2, z = 3}

hash:delete_if(function(key, value) return key == 'y' end)

hash:each(function(key, value)

  puts(key, value)

end)



--[[OUTPUT:

1

2

3

x       1

z       3

--]]

which is implemented as such:

-- This is rather incomplete but is a start.



-- ruby numbers

local mt = {}

debug.setmetatable(0, mt)

local funcs = {}

function funcs.times(num, func)

  for i=1,num do func(i) end

end

mt.__index = funcs;



-- ruby hash

local h_mt = {}

h_mt.__index = h_mt

function h_mt:each(func)

  for k,v in pairs(self) do func(k,v) end

end

function h_mt:delete_if(func)

  for k,v in pairs(self) do

    if func(k,v) then self[k] = nil end

  end

end

function H(t)

  return setmetatable(t, h_mt)

end



-- ruby functions

puts = print

--DavidManura

See Also

• MakingLuaLikePhp

Backlinks such as the following are clutter-- page title link already provides them

In a way, yes, but it involves two clicks rather than one to navigate to them and is not very visible. It may be better if backlinks were displayed on the bottom of a page. --DavidManura

• This is in LuaHacks