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Mildred wrote:
Browsing the wiki, I discovered the frontier pattern. But I can't find it in the reference manual ? Why not include it ?
Roberto says[1]
It is not documented because we are not sure it is worth providing this kind of facility.
In the upcoming book on Lua that I coauthored[2], we describe how to use it, and give the following warning:
The fact that %f is undocumented means that it may -- without notice -- change or disappear altogether in a subsequent release of Lua. It also means that there?s no explicit guarantee of its behavior, and it may act unexpectedly when used in unusual situations:
> -- This should find the empty string at the beginning of the > -- subject, but it doesn't (due to an implementation quirk): > print(string.find("\0", "%f[%z]")) nil
[1] http://lua-users.org/lists/lua-l/2004-09/msg00294.html [2] http://www.amazon.com/gp/product/0470069171/
-- Aaron