diff options
Diffstat (limited to 'util/array.lua')
| -rw-r--r-- | util/array.lua | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/util/array.lua b/util/array.lua index 5b535fc1..f1f8fa97 100644 --- a/util/array.lua +++ b/util/array.lua @@ -1,11 +1,13 @@ -local array_methods = {}; -local array_mt = { __index = array_methods, __tostring = function (array) return array:concat(", "); end }; +local array = {}; -local function array(t) +local array_mt = { __index = array, __tostring = function (array) return array:concat(", "); end }; +local function new_array(_, t) return setmetatable(t or {}, array_mt); end -function array_methods:map(func, t2) +setmetatable(array, { __call = new_array }); + +function array:map(func, t2) local t2 = t2 or array{}; for k,v in ipairs(self) do t2[k] = func(v); @@ -13,7 +15,7 @@ function array_methods:map(func, t2) return t2; end -function array_methods:filter(func, t2) +function array:filter(func, t2) local t2 = t2 or array{}; for k,v in ipairs(self) do if func(v) then @@ -24,17 +26,17 @@ function array_methods:filter(func, t2) end -array_methods.push = table.insert; -array_methods.pop = table.remove; -array_methods.sort = table.sort; -array_methods.concat = table.concat; -array_methods.length = function (t) return #t; end +array.push = table.insert; +array.pop = table.remove; +array.sort = table.sort; +array.concat = table.concat; +array.length = function (t) return #t; end -function array_methods:random() +function array:random() return self[math.random(1,#self)]; end -function array_methods:shuffle() +function array:shuffle() local len = #self; for i=1,#self do local r = math.random(i,len); |