local fn = {}
fn.copy = function(t)
local new = {}
for i,v in pairs(t) do new[i] = v end
setmetatable(new,getmetatable(t))
return new
end
fn.merge = function(base,override)
local new = fn.copy(base)
for k,v in pairs(override) do
new[k] = v
end
return new
end
fn.append = function(r1, r2)
local new = fn.copy(r1)
for i=1,#r2 do
new[#new + 1] = r2[i]
end
return new
end
fn.capitalize = function(str)
return string.upper(string.sub(str, 1,1)) .. string.sub(str, 2)
end
fn.has = function(tbl,value)
for k,v in pairs(tbl) do
if value == v then return true, k end
end
return false, nil
end
fn.keys = function(lst)
local ks = {}
for k,_ in pairs(lst) do
ks[#ks + 1] = k
end
return ks
end
fn.pick = function(lst)
local keys = fn.keys(lst)
return keys[math.random(#keys)]
end
return fn