String concatenation qn

[Wolf Blaum]

For Quality purpouses, Ajey Kulkarni 's mail on Saturday 24 January 2004 17:52
may have been monitored or recorded as:

> hi,.

hi

> i would like to quickly append a string to a variable.

> open NEWFH, "> $filename.new" or die "new procmailrc err";
> where $filename has /tmp/xyz
>
> Anything really silly here??

Nothing I didnt do wrong at least a thousand times:

open NEWFH, "> $filename".".new" or die "new procmailrc err";

will do it.
------------
perldoc perlop:
Gory details of parsing quoted constructs

* * * *When presented with something that might have several dif-
* * * *ferent interpretations, Perl uses the DWIM (that's "Do
* * * *What I Mean") principle to pick the most probable inter-
* * * *pretation. *This strategy is so successful that Perl pro-
* * * *grammers often do not suspect the ambivalence of what they
* * * *write. *But from time to time, Perl's notions differ sub-
* * * *stantially from what the author honestly meant.
-------------

This is one of the latter cases.

Wolf

[Wiggins D'Anconia]

wolf blaum wrote:

> For Quality purpouses, Ajey Kulkarni 's mail on Saturday 24 January 2004 17:52
> may have been monitored or recorded as:
>
>

>>hi,.

>
> hi
>

>>i would like to quickly append a string to a variable.

>
>

>>open NEWFH, "> $filename.new" or die "new procmailrc err";
>>where $filename has /tmp/xyz
>>
>>Anything really silly here??

>
>
> Nothing I didnt do wrong at least a thousand times:
>
> open NEWFH, "> $filename".".new" or die "new procmailrc err";
>
> will do it.
> ------------
> perldoc perlop:
> Gory details of parsing quoted constructs
>
> When presented with something that might have several dif-
> ferent interpretations, Perl uses the DWIM (that's "Do
> What I Mean") principle to pick the most probable inter-
> pretation. This strategy is so successful that Perl pro-
> grammers often do not suspect the ambivalence of what they
> write. But from time to time, Perl's notions differ sub-
> stantially from what the author honestly meant.
> -------------
>
> This is one of the latter cases.
>
> Wolf
>
>

Not sure I see why adding a concatenation helped? The OP's code works
fine in my 5.8.0 RH 9.0 install and the dot isn't significant within the
double quotes since it isn't a property or namespace token separator
like in other languages. Is this version dependent, or maybe UTF-8
related?

[url]http://danconia.org[/url]

[Ajey Kulkarni]

hi,.
i would like to quickly append a string to a variable.
Suppose $filename has "/tmp/xyz after appending i want to
get $filename as /tmp/xyz.NEW.

I'm getting a ? for a . (period).

I'm doing something like

open NEWFH, "> $filename.new" or die "new procmailrc err";
where $filename has /tmp/xyz

Anything really silly here??

regards
-Ajey

[Drieux]

On Jan 23, 2004, at 5:24 PM, wolf blaum wrote:

> For Quality purpouses, Ajey Kulkarni 's mail on Saturday 24 January
> 2004 17:52
> may have been monitored or recorded as:
>

>> i would like to quickly append a string to a variable.

>

>> open NEWFH, "> $filename.new" or die "new procmailrc err";
>> where $filename has /tmp/xyz
>>
>> Anything really silly here??

>
> Nothing I didnt do wrong at least a thousand times:
>
> open NEWFH, "> $filename".".new" or die "new procmailrc err";

[..]

forgive me for being 'pedantic' but
given the sequence

foreach my $filename (@list_of_file_names)
{
open(NEWFH, "> ${filename}.new" ) or die "new $filename err:$!";
....

}

One has 'less ambiguity' using the curley braces around
the variable name so that it will KNOW without a doubt
that one really means that to be the variable should
suffice - It really becomes important when you want
to concatenate without things like a "." between tokens

foreach my $start (@entree) {
foreach my $phrase (@list_of_sillies) {
my $freak = "${start}Buzz${phrase}here";
rhetorical_devices($freak);
}
}

[Ajey Kulkarni]

Thanks a ton to all.

On Sat, 24 Jan 2004, drieux wrote:

>
> On Jan 23, 2004, at 5:24 PM, wolf blaum wrote:
>

> > For Quality purpouses, Ajey Kulkarni 's mail on Saturday 24 January
> > 2004 17:52
> > may have been monitored or recorded as:
> >

> >> i would like to quickly append a string to a variable.

> >

> >> open NEWFH, "> $filename.new" or die "new procmailrc err";
> >> where $filename has /tmp/xyz
> >>
> >> Anything really silly here??

> >
> > Nothing I didnt do wrong at least a thousand times:
> >
> > open NEWFH, "> $filename".".new" or die "new procmailrc err";

> [..]
>
> forgive me for being 'pedantic' but
> given the sequence
>
> foreach my $filename (@list_of_file_names)
> {
> open(NEWFH, "> ${filename}.new" ) or die "new $filename err:$!";
> ....
>
> }
>
> One has 'less ambiguity' using the curley braces around
> the variable name so that it will KNOW without a doubt
> that one really means that to be the variable should
> suffice - It really becomes important when you want
> to concatenate without things like a "." between tokens
>
> foreach my $start (@entree) {
> foreach my $phrase (@list_of_sillies) {
> my $freak = "${start}Buzz${phrase}here";
> rhetorical_devices($freak);
> }
> }
>
>
> --
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