Login Register

luaL_optnumber

luaL_optnumber[-0, +0, v]

1	`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_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

luaL_loadbuffer luaL_loadbuffer[-0, +1, –] int luaL_loadbuffer (lua_State *L, const char *buff, size_t sz,

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_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_buffinit luaL_buffinit[-0, +0, –] void luaL_buffinit (lua_State *L, luaL_Buffer *B); Initializes a buffer B. This function does not allocate any space; the