in reply to Re: Small Calculator!
in thread Small Calculator!

The -l is just used to add a newline to each print?

Why not use -p flag too, and have it do the reading and printing? 

perl -lpe"$_=eval"

[download]
(works in a file, -e has issues under Windows)

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Re: Re: Re: Small Calculator!
by sauoq (Abbot) on Oct 05, 2002 at 07:46 UTC

    Adding some error checking...

    perl -ple'$_=eval||$@'

    A calculator really should be able to tell you not to divide by 0, don't you agree? :-)

    -sauoq
"My two cents aren't worth a dime.";
[reply]
[d/l]
      What if the result really is "false", e.g. zero?
[reply]

        Ouch. Right. That would probably be more important than error checking. How about:

        perl -ple'$_=eval||$@||0'

        [download]
        -sauoq
"My two cents aren't worth a dime.";
[reply]
[d/l]

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