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Re: Range operator weirdness?

by dragonchild (Archbishop)
on Feb 28, 2002 at 15:48 UTC ( #148250=note: print w/replies, xml ) Need Help??


in reply to Range operator weirdness?

Now I'm confused! (Not that this is all that surprising ...)

I thought that auto-incremement on characters would following the ASCII table. But, ord("0") is 48 and ord("1") is 49. ord("9") is 57 and chr(58) is ':'. Could someone explain what I'm not seeing?

------
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Don't go borrowing trouble. For programmers, this means Worry only about what you need to implement.

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Re: Re: Range operator weirdness?
by Sweeper (Pilgrim) on Feb 28, 2002 at 21:03 UTC
    I thought that auto-incremement on characters would following the ASCII table. But, ord("0") is 48 and ord("1") is 49. ord("9") is 57 and chr(58) is ':'. Could someone explain what I'm not seeing? The magical auto-increment does not use the whole ASCII table. It is limited to the 10 numbers, the 26 upper-case letters, and the 26 lower-case letters.

    Furthermore, as said in the Camel book (page 91), the string must match /[a-zA-Z]*[0-9]*$/. That is, you can auto-increment file or file01, but not file01a.

    Anyhow, you cannot get a : as the result of auto-increment, magical or not.

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[marto]: Eily, there's actually a lot of good discussion on the topic in the HN link choroba posted
[marto]: sorry for the late response, busy busy :/
[Corion]: I think you need to load Readline in the debugger, but I don't know how
[Corion]: Yay, invitation for a team-building workshop, with a team of 100 people :-/
[Eily]: marto after an additional read I started to see the light actually. And choroba's link was helpful as well :)
[Corion]: I'll send my colleague who doesn't yet know the people there, and I'll do production duty instead.

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