Login Register

luaL_optnumber

luaL_optnumber[-0, +0, v]

lua_Number luaL_optnumber (lua_State *L, int arg, lua_Number d);

If the function argument arg is a number, returns this number. If this argument is absent or is nil, returns d. Otherwise, raises an error.

Links:

https://www.lua.org/manual/5.3/manual.html#luaL_optnumber

doc_lua

2025-01-10 15:47:30

Comments

Leave a Comment

Please login to continue.

Popular Articles

luaL_checklstring luaL_checklstring[-0, +0, v] const char *luaL_checklstring (lua_State *L, int arg, size_t *l); Checks whether the function argument arg is a strin

luaL_checktype luaL_checktype[-0, +0, v] void luaL_checktype (lua_State *L, int arg, int t); Checks whether the function argument arg has type t. See lua_type fo

luaL_Reg luaL_Reg typedef struct luaL_Reg { const char *name; lua_CFunction func; } luaL_Reg; Type for arrays of functions to be registered by luaL_setf

luaL_addstring luaL_addstring[-?, +?, m] void luaL_addstring (luaL_Buffer *B, const char *s); Adds the zero-terminated string pointed to by s to the buffer B (se

luaL_prepbuffsize luaL_prepbuffsize[-?, +?, m] char *luaL_prepbuffsize (luaL_Buffer *B, size_t sz); Returns an address to a space of size sz where you can copy a st