Initial commit

TableHelpers.lua

@@ -0,0 +1,84 @@
+Array = {}
+Dict = {}
+
+function Array.iter(arr, fn)
+   for _,v in ipairs(arr) do
+        fn(v)
+   end
+end
+
+function Array.map(arr, fn)
+    local t = {}
+
+    for _,v in ipairs(arr) do
+        table.insert(t, fn(v))
+    end
+
+    return t
+end
+
+function Array.mapRange(start, stop, fn)
+    local arr = {}
+
+    for i = start, stop do
+        arr[i] = fn(i)
+    end
+
+    return arr
+end
+
+function Array.iterRange(start, stop, fn)
+    for i = start, stop do
+        fn(i)
+    end
+end
+
+function Array.contains(arr, value)
+    for _,v in ipairs(arr) do
+        if v == value then return true end
+    end
+
+    return false
+end
+
+function Array.insert(arr, value, index)
+    local t = {}
+
+    for _, v in ipairs(arr) do
+        table.insert(t, v)
+    end
+
+    table.insert(t, index, value)
+
+    return t
+end
+
+function Dict.iter(t, fn)
+    for k,v in pairs(t) do
+        fn(k,v)
+    end
+end
+
+function Dict.map(t, fn)
+    local nt = {}
+
+    for k,v in pairs(t) do
+        nt[k] = fn(k,v)
+    end
+
+    return nt
+end
+
+function Dict.keysAsArray(t)
+    local nt = {}
+
+    for k,_ in pairs(t) do
+        table.insert(nt, k)
+    end
+
+    return nt
+end
+
+function Dict.isEmpty(t)
+    return next(t) == nil
+end