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Re: easy newbie question

by repson (Chaplain)
on Apr 24, 2001 at 09:46 UTC ( #74967=note: print w/replies, xml ) Need Help??


in reply to easy newbie question

The only time you should use "\r" is when you specifically require a carrige return without a new line, like in this.

for (1..10) { print "\r$_"; sleep 1; }

That code counts from one to two once per second reusing the same line. This can be useful for a progress counter or other ticker you need to update.

In almost all other cases a "\n" is the normal way for new lines, except in network communication where you should generally use "\015\012" or something similar.

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[Cosmic37]: I try to match successive date times stored in variable $mydt
[Cosmic37]: I guess it is searching for the string "$mydt"
[Corion]: Indeed cool, erix ;)
[Cosmic37]: rather than the value of $mydt which is a date time strong such as 2016-01-01 12:30:56
[Corion]: Cosmic37: No, but maybe $mydt doesn't contain what you think it does, or it contains characters that are special in a regular expression? Try if( $line =~ /\Q$mydt\E/) { ... for a literal match
[Cosmic37]: I mean string grrr
[Corion]: Maybe add an else branch in which you print what the values of $line and $mydt are?
[Cosmic37]: ah thank you I will try
[Cosmic37]: you are right $mydt did not contain what I expected... :-D I will now think :-D
[Cosmic37]: crunch...grind... whirr...gnashing metal crunching cogs...

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