<function name="util.funck" parent="jit" type="libraryfunc"> <description> Gets a constant at a certain index in a function. <warning>This function isn't officially documented on LuJIT wiki, use it at your own risk.</warning> <warning>This function isn't officially documented on LuaJIT wiki, use it at your own risk.</warning> <note>Numbers constants goes from 0 (included) to n-1, n being the value of nconsts in <page>jit.util.funcinfo</page> in other words, the consts goes from (nconsts-1) to -n</note> <note>This function only works for Lua defined functions.</note> </description> <realm>Shared and Menu</realm> <args> <arg name="func" type="function">Function to get constant from</arg> <arg name="index" type="number">Constant index (counting down from the top of the function at -1)</arg> </args> <rets> <ret name="" type="any">The constant found. <note>This will return a <page>proto</page> for functions that are created inside the target function - see Example 2.</note></ret> </rets> </function> <example> <description>This code demonstrates how to get a constant in a function.</description> <code> function bob() print("hi") end print(jit.util.funck(bob, -1)) print(jit.util.funck(bob, -2)) </code> <output> ``` print hi ``` </output> </example> <example> <description>Demonstrates how a function created inside of the accessed function will be a <page>proto</page>s when used with this function.</description> <code> local function foo() local function bar() end end print( type( jit.util.funck( foo, -1 ) ) ) </code> <output> ``` proto ``` </output> </example>