diff options
Diffstat (limited to 'util/array.lua')
| -rw-r--r-- | util/array.lua | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/util/array.lua b/util/array.lua index 072b24a7..05e035df 100644 --- a/util/array.lua +++ b/util/array.lua @@ -5,6 +5,11 @@ local function new_array(_, t) return setmetatable(t or {}, array_mt); end +function array_mt.__add(a1, a2) + local res = new_array(); + return res:append(a1):append(a2); +end + setmetatable(array, { __call = new_array }); function array:map(func, t2) @@ -42,6 +47,7 @@ function array:shuffle() local r = math.random(i,len); self[i], self[r] = self[r], self[i]; end + return self; end function array:reverse() @@ -50,6 +56,15 @@ function array:reverse() self:push(self[i]); self:pop(i); end + return self; +end + +function array:append(array) + local len,len2 = #self, #array; + for i=1,len2 do + self[len+i] = array[i]; + end + return self; end function array.collect(f, s, var) |