Revision Difference
debug.getlocal#560121
<function name="getlocal" parent="debug" type="libraryfunc">
<description>Gets the name and value of a local variable indexed from the level.⤶
<description>⤶
<deprecated></deprecated>⤶
⤶
Gets the name and value of a local variable indexed from the level.⤶
<warning>When a function has a tailcall return, you cannot access the locals of this function.</warning>
</description>
<realm>Shared and Menu</realm>
<args>
<arg name="thread" type="thread" default="Current thread">The thread</arg>
<arg name="level" type="number">The level above the thread.
* 0 = the function that was called (most always this function)'s arguments
* 1 = the thread that had called this function.
* 2 = the thread that had called the function that started the thread that called this function.
A function defined in Lua can also be passed as the level. The index will specify the parameter's name to be returned (a parameter will have a value of nil).</arg>
<arg name="index" type="number">The variable's index you want to get.
* 1 = the first local defined in the thread
* 2 = the second local defined in the thread
* etc...
</arg>
</args>
<rets>
<ret name="" type="string">The name of the variable.
Sometimes this will be `(*temporary)` if the local variable had no name.
<note>Variables with names starting with **(** are **internal variables**.</note></ret>
<ret name="" type="any">The value of the local variable.</ret>
</rets>
</function>
<example>
<description>Gets all the local variables of the current thread and stores them in a table.</description>
<code>
local varA = 1
local varB
local locals = {}
local i = 1
while ( true ) do
local name, value = debug.getlocal( 1, i )
if ( name == nil ) then break end
locals[i] = {
name = name,
value = value,
}
i = i + 1
end
for k, v in pairs( locals ) do
print(v.name, "=", v.value)
end
</code>
<output>
```
varA = 1
varB = nil
locals = table: 0xa78f5ab2
i = 4
```
</output>
</example>
<example>
<description>Prints the parameter names for <page>hook.Add</page>.</description>
<code>
local print = print
local getlocal = debug.getlocal
local function PrintFunctionParameters( func )
local k = 2
local param = getlocal( func, 1 )
while param ~= nil do
print( param )
param = getlocal( func, k )
k = k + 1
end
end
PrintFunctionParameters( hook.Add )
</code>
<output>
```
event_name
name
func
```
</output>
</example>