Difference between revisions of "Debug.settypemt"
From GiderosMobile
| Line 2: | Line 2: | ||
'''Available since:''' Gideros 2016.08<br/> | '''Available since:''' Gideros 2016.08<br/> | ||
=== Description === | === Description === | ||
| − | Set meta table type | + | <translate>Set meta table type |
From http://lua-users.org/wiki/LuaPowerPatches | From http://lua-users.org/wiki/LuaPowerPatches | ||
| Line 19: | Line 19: | ||
print(s[8]) --> w | print(s[8]) --> w | ||
</code></pre> | </code></pre> | ||
| − | Also sets table library as default type metatable for all tables without user defined metatables i.e. enables following syntax: t:insert(3); t:remove(2); t:sort(func); etc. | + | Also sets table library as default type metatable for all tables without user defined metatables i.e. enables following syntax: t:insert(3); t:remove(2); t:sort(func); etc.</translate> |
<source lang="lua"> | <source lang="lua"> | ||
debug.settypemt() | debug.settypemt() | ||
</source> | </source> | ||
Revision as of 13:34, 23 August 2018
Available since: Gideros 2016.08
Description
Set meta table type
From http://lua-users.org/wiki/LuaPowerPatches Useful to extend Lua syntax and for some tricks.
Adds new method to debug library: debug.settypemt(type, metatable) Supported types: "nil","boolean","lightuserdata","number","string","table","function","userdata","thread".
For example:
<code>
-- enable string indexing (s[n]) to get character at utf8 position
string.__index = function(s, n) return utf8.sub(s, n, n) end
debug.settypemt("string", string)
local s = "Hello, world!"
print(s[8]) --> w
</code>
Also sets table library as default type metatable for all tables without user defined metatables i.e. enables following syntax: t:insert(3); t:remove(2); t:sort(func); etc.
debug.settypemt()
