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Re^2: The error says the value is uninitialized, but it works anyway

by mizducky (Novice)
on Aug 17, 2019 at 09:56 UTC ( #11104610=note: print w/replies, xml ) Need Help??


in reply to Re: The error says the value is uninitialized, but it works anyway
in thread The error says the value is uninitialized, but it works anyway

The homework question just defines @colors and @drop and says to remove the things in drop from colors, that's it.
The code I posted does print @colors with out the items from @drop, but since I'm just learning this for the first time that's the only way I could think of to do it.
I'll keep playing with the things you suggested. Thank you for your help!
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Re^3: The error says the value is uninitialized, but it works anyway
by haukex (Chancellor) on Aug 17, 2019 at 10:05 UTC
    The homework question just defines @colors and @drop and says to remove the things in drop from colors, that's it.

    In that case, the "easiest" way to go about it would probably be to build a hash from the @drop array, and to use grep to filter the @colors array. I could write these two lines of code for you, but since this is homework (thanks for letting us know, by the way), it's probably best if you see if you can figure it out :-) But feel free to ask any questions about it here, or ask if you get stuck!

    Hint: See "Data: Arrays" in perlfaq4 (just ignore the stuff about ~~, that's still experimental).

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