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--[[
Copyright (c) 2012-2013 Kaarle Ritvanen
See LICENSE file for license details
--]]
module(..., package.seeall)
function setdefault(t, k, v)
if t[k] == nil then t[k] = v end
return t[k]
end
function update(dst, src, preserve)
for k, v in pairs(src) do
if not preserve or dst[k] == nil then dst[k] = v end
end
return dst
end
function setdefaults(dst, src) return update(dst, src, true) end
function copy(var)
return type(var) == 'table' and setdefaults({}, var) or var
end
function extend(dst, src)
for _, v in ipairs(src) do table.insert(dst, v) end
return dst
end
function keys(tbl)
local res = {}
for k, v in pairs(tbl) do table.insert(res, k) end
return res
end
function map(func, tbl)
local res = {}
for k, v in pairs(tbl) do res[k] = func(v) end
return res
end
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