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