Re: Multiple Classes per File and use

"MD" == Michele Dondi <bik.mido@xxxxxxxxxxxxx> writes:

MD> On Wed, 07 Feb 2007 15:51:57 -0500, Uri Guttman <uri@xxxxxxxxxxxxxxx>
MD> wrote:

>> you used a for loop with the implied use of $_ as the loop variable. it
>> is better to use a named lexical variable instead like this:
>>
>> for my $foo ( @bars ) {
>>
>> it makes the code easier to understand since the loop body will have
>> that name to help document it. i only use $_ in map/grep where it is
>> required and in special cases where it works better.

MD> Oh c'mon! This is just *so* controversial... even slightly
MD> flame-baiting... I use $_ all the time in loops, provided they're
MD> short enough. If possible I cast them in a statement modifier form,
MD> even. If code is self explanatory it is... err, well, self
MD> explanatory. Of course I would never recommend to use $_ with a for
MD> loop having a main block of 25 lines!!

i wouldn't call it controversial or flame baiting. you can disagree with
it but most style guides (PBP included) recommend named variables
whenever possible. sure it is a style issue but i am a strong advocate
of named variables as part of an overall style. and i emphasize choosing
quality names which makes it work even better.

XC> "calculated jump". As I posted, that's the first thing to break. Last
XC> time I tried that for a client on a serious project, was 20 years ago
XC> and I thought I was cool. I only did it because it could be done -- and
XC> because nobody had ever educated me as to why it might be risky.
>>
>> this is very wrong in several ways. it is a symref which you said you
>> don't want to do and no one recommends that you do. it is not testing if
MD> [snip]

MD> I wholeheartedly agree with you, but some details, including the
MD> "calculated jump" one above make me suspect that the OP really
MD> misunderstood the meaning of "dispatch table", in which case I renew
MD> the invite for him to look it up.

well, i took calculated jump as the symref since that is a calculated
name of the sub to call. but later the OP seemed to agree with me so i
am confused as to whether he is going to use a dispatch table.

uri

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