Lua Quick Start Guide

Pushing to the stack

The first step in working with the Lua stack is usually to push some data onto it. The Lua C API provides several functions to push different types of data onto the stack. The following functions can be used to push data:

• lua_pushnil(lua_State*): Pushes nil onto the stack
• lua_pushboolean(lua_State*, bool): Pushes a Boolean value onto the stack
• lua_pushnumber(lua_State*, lua_Number): Pushes a double onto the stack
• lua_pushinteger(lua_State*, lua_Integer): Pushes a signed integer onto the stack
• lua_pushstring (lua_State*, const char*): Pushes a NULL terminated string onto the stack

When you push a string onto the stack, Lua creates its own copy of that string. As soon as the push operation is finished, you can modify ...