tonumber (e [, base]) When called with no base, tonumber tries to convert its argument to a number. If the argument is already a number or a string convertible

debug.getregistry () Returns the registry table (see §4.5).

luaL_callmeta[-0, +(0|1), e] int luaL_callmeta (lua_State *L, int obj, const char *e); Calls a

lua_setglobal[-1, +0, e] void lua_setglobal (lua_State *L, const char *name); Pops a value from

coroutine.wrap (f) Creates a new coroutine, with body f. f must be a function. Returns a function that resumes the coroutine each time it is called.

luaL_addvalue[-1, +?, m] void luaL_addvalue (luaL_Buffer *B); Adds the value at the top of the

6.4.1 – Patterns Patterns in Lua are described by regular strings, which are interpreted as patterns by the pattern-matching functions

string.gmatch (s, pattern)pattern§6.4.1spattern As

rawget (table, index)table[index]__indextableindex

io.type (obj) Checks whether obj is a valid file handle. Returns the string "file" if obj is an open file handle, "closed file"