Method ToNumber

lua.go:1402–1402

ToNumber converts the Lua value at index to the Go type for a Lua number (float64). The Lua value must be a number or a string convertible to a number. If the operation failed, the second return value will be false. http://www.lua.org/manual/5.2/manual.html#lua_tonumberx

(index int)

//
// http://www.lua.org/manual/5.2/manual.html#lua_tonumberx
func (l *State) ToNumber(index int) (float64, bool) { return l.toNumber(l.indexToValue(index)) }

// ToBoolean converts the Lua value at index to a Go boolean. Like all
// tests in Lua, the only false values are false booleans and nil.