Hi Uri,
On Monday 18 Apr 2011 08:50:43 Uri Guttman wrote:
> >>>>> "SF" == Shlomi Fish <shlo...@iglu.org.il> writes:
> SF> Hi Uri,
> SF> thanks for all your input on this list. See below for my response.
>
> SF> On Monday 18 Apr 2011 07:56:16 Uri Guttman wrote:
> >> >>>>> "mr" == marcos rebelo <ole...@gmail.com> writes:
> mr> Ugly but may work, with a simple eval
> mr> use strict;
> mr> use warnings;
>
> mr> my $var = '$str. q( abc_xyz)';
> mr> my $str;
>
> mr> for(my $i=1;$i <= 5; $i++){
> mr> $str = $i;
> mr> my $line = 'Line: '.eval $var;
> mr> print "$line\n";
> mr> }
>
> >> NEVER do that for such a simple problem. eval string is a last resort
> >> when no other technique can work well.
>
> SF> Well, you are right naturally, but there is no need to be so
> SF> rude. Start your email with a greeting, continue with a
> SF> compliment, use soft words, etc. Otherwise, you may be scaring
> SF> many people away. See some of my advice in:
>
> it isn't rude. this comes up often enough that it needs to be snipped in
> the bud. eval string is not for newbies or even experienced coders
> unless it is ABSOLUTELTY needed. it has too many dangers to ignore that
> rule.
I agree that it is bad and has to be sniped in the bud. But they way you're
expressing yourself on E-mails is alienating many people.
>
> this is akin to a toddler reaching out to touch the stove. you have to
> stop it before it happens. when some on this list post eval solutions,
> that has to be stopped before some newbie runs with the answer. the code
> that results will be dangerous to an extreme. yelling to prevent a stove
> burn is not only acceptable, but commendable. i won't back off what i
> said.
Well, what are the implications of someone using eval in production code
(which would be perfectly safe in this example, although sub-ideal) vs. a
toddler reaching out to touch the stove? You're overstating the consequences.
You could have said that it is not a good thing, while being polite and much
less hostile and angry. As it is, you are scaring many people from this list.
I was not referring just to tthis particular E-mail of yours, but to your
general trend of hostile communication. You should try to be more friendly and
pleasant.
> NEVER USE STRING EVAL unless you absolutely must and you know what you
> are doing. it should NEVER be the first answer to ANYTHING.
>
You are right about that, but that wasn't my point.
Regards,
Shlomi Fish
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