Re: Accessing String contents
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- Subject: Re: Accessing String contents
- From: Alexandre Rion <gaumerie@...>
- Date: 20 Jun 2012 20:50:50 -0700
There is no [] acces for strings. You should use the sub function:
string.sub(a[1],1,1)
or
a[1]:sub(1,1)
If you need it, you can also implement the __index metamethod:
mt = getmetatable("")
mt.__index = function(s,i)
return string.sub(s,i,i)
end
--> a[1][1]
Alexandre
----- Reply message -----
From: meino.cramer@gmx.de
To: "Lua mailing list" <lua-l@lists.lua.org>
Subject: Accessing String contents
Date: Thu, Jun 21, 2012 05:37
Hi,
from a string in a table like this
a={}
a[1]="hello"
I want to access/retrieve the n-th character.
Somewhere I read about, that in lua everything is a table,
therefore I thought that
=a[1][1]
would gives me "h" instead of an error.
But this may be thought too C-ish... ;)
I scanned through the String Tutorial, the String Library Tutotrial
and the online version of Programming Lua and found nothing what seems
appropiate to me...but I am sure that's due to me.... :)
What is the most cheapest (in terms of performance and programming
overhead) way to access the n-th character of a string which stored
at a certain index in a table?
Thank you very much in advance for any help!
Best regards,
mcc