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Re: Controlling already printed text to console.

by Marshall (Abbot)
on Aug 02, 2012 at 07:23 UTC ( #984959=note: print w/replies, xml ) Need Help??

in reply to Controlling already printed text to console.

How do I change some char.s of the already printed text string? I.e.having printed

This is really hard for me to understand.
Once you "print" something - it is gone, passed to some other level of software.

Adding something before your print is fine.

my $hello ="Hello, World\n"; print "[]$hello";
I am not sure exactly what you are trying to do.
Maybe this is GUI? I don't know.

If you are talking about a command line window, there are various ways to do this - maybe just move the cursor back to the line to be modified, delete that line and then "re-print" that line. This will happen so fast that the user will not see it.

Replies are listed 'Best First'.
Re^2: Controlling already printed text to console.
by humble (Acolyte) on Aug 03, 2012 at 19:05 UTC
    Thank You, Marshall.

    Yes I wanted to reprint the string that have been printed.

    Please look at the example given by frozenwithjoy.

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[RonW]: as I understand it, RPerl "compiles" a subset of Perl to C, so I would expect the final executable to run a lot faster
[RonW]: Is there an English language version of the site?
[LanX]: but Afaik Perl is on average about 10-20 times slower than C
[LanX]: no
[LanX]: but I could ask Herbert to elaborate
[1nickt]: performance_benchm arks.html

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