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Scope/Function names and labels: Difference between revisions
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Good-bye!
</pre>
=={{header|Lua}}==
In Lua, variables are global by default, but can be modified to be local to the block in which they are declared.
<lang lua>function foo() print("global") end -- global scope by default
foo()
local function foo() print("local module") end -- local to the current block (which is the module)
foo() -- local obscures the global
_G.foo() -- bug global still exists
do -- create a new block
foo() -- outer module-level scope still visible
local function foo() print("local block") end
foo() -- obscures outer module-level local
local function foo() -- redefine at local block level
print("local block redef")
local function foo() -- define again inside redef
print("local block redef inner")
end
foo() -- call block-level redef inner
end
foo() -- call block-level redef
end -- close the block (and thus its scope)
foo() -- module-level local still exists
_G.foo() -- global still exists</lang>
{{out}}
<pre>global
local module
global
local module
local block
local block redef
local block redef inner
local module
global</pre>
=={{header|M2000 Interpreter}}==
There are 5 structures for named routines.
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