diff --git a/.vscode/c.code-snippets b/.vscode/c.code-snippets
index b0be228..1f2bba1 100644
--- a/.vscode/c.code-snippets
+++ b/.vscode/c.code-snippets
@@ -4,10 +4,55 @@
     "body": ["#include <stdio.h>", "", "int main() {", "    return 0;", "}"],
     "description": "Init file"
   },
-  "Define function swap two var with macro": {
-    "prefix": "fn_swap_macro",
-    "body": ["#define swap(a, b) { typeof(a) temp = a; a = b; b = temp; }"],
-    "description": "Define function swap two var with macro"
+  "Define size": {
+    "prefix": "define_size",
+    "body": [
+      "#ifdef _WIN64",
+      "#define isize long long",
+      "#define usize unsigned long long",
+      "#else",
+      "#define isize long",
+      "#define usize unsigned long",
+      "#endif",
+      "#define i8 char",
+      "#define u8 unsigned char",
+      "#define i16 short",
+      "#define u16 unsigned short",
+      "#define i32 int",
+      "#define u32 unsigned int",
+      "#define i64 long long",
+      "#define u64 unsigned long long"
+    ],
+    "description": "Define size"
+  },
+  "Define macro wrapper": {
+    "prefix": "define_macro_wrapper",
+    "body": ["#define wrapper(...) __VA_ARGS__"],
+    "description": "Define macro wrapper"
+  },
+  "Define for wrapper": {
+    "prefix": "define_for_wrapper",
+    "body": [
+      "#define for_wrapper(a, b, c, d)                                                \\",
+      "    {                                                                          \\",
+      "        a;                                                                     \\",
+      "        for (; b; c)                                                           \\",
+      "            d;                                                                 \\",
+      "    }"
+    ],
+    "description": "Define for wrapper"
+  },
+  "Define for i": {
+    "prefix": "define_for_i",
+    "body": [
+      "#define for_i(i, range, inner)                                                 \\",
+      "    {                                                                          \\",
+      "        int i;                                                                 \\",
+      "        for (i = 0; i < range; i++)                                            \\",
+      "            inner;                                                             \\",
+      "    }"
+    ],
+    "description": "Define for i"
   },
   "Define var swapper": {
     "prefix": "fn_define_swapper",