Re: Abusing Lua iterators for fun and profit

[Roberto Ierusalimschy <roberto@...>]

> [...]
>   It's (in my opinion) cleaner and easier to read.  Now my question:  can I
> rely upon this behavior of io.lines() and string.gmatch() to only return a
> single function?  I tested it on Lua 5.1, 5.2, 5.3 and LuaJIT, and in each
> case, only a function was returned.  Am I relying upon an implementation
> detail?  Should I use the first version, where I pass in the state and value
> each time, to be "safe"?
> 
>   -spc 

I guess the best solution is not to use lines/gmatch at all, but
read/match (or find). See [1] for something similar.

[1] http://www.lua.org/pil/7.1.html

-- Roberto