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Re: Re: Ways of commenting subroutines

by willdooUK (Beadle)
on Mar 29, 2001 at 17:47 UTC ( #68094=note: print w/replies, xml ) Need Help??

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  1. or download this
    public String getCustomerSSN()
    {
        // return the customer's SSN<
        return customerSSN;
    }
    
  2. or download this
    public String getCustomerID
    {
        // return the customer's SSN
        return customerID;
    }
    
  3. or download this
    if (ftpResponse.charAt(0) == '2')
        // ftp result in 200s = success
    
  4. or download this
    public boolean wasSuccessful(String ftpResponse)
    {
        return ftpResponse.charAt(0) == '2';
    }
    
  5. or download this
    if (wasSuccessful(ftpResonse))
    

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[Corion]: Hmm - no, that outputs 1 for me on 5.14 - perl -wle "my $x = qq(\x{200b}); warn $x; warn length $x"
[hippo]: Smart - I'll give that a go. Thanks.
[hippo]: Ah
[Corion]: But maybe there is some other Unicode string that will be true but have a zero width
[hippo]: For explanation, I've seen this construct in someone else's code (no names, no pack drill) and couldn't think of a situation to trigger it.
[Corion]: You'll have to look somewhere esoteric for that. Maybe some tied variable or special dualvar can also trigger that. But it's certainly not a common occurrence
[Corion]: And on 5.20, the following also outputs no find:perl -wle 'for my $x ("\x{2000}".."\ x{1fffff}") { if( $x && ! length $x ) { warn qq(<$x>); warn length $x; die } }'
[Corion]: (this time on Unix)
[hippo]: Understood. I'll have to go through the code and see if it's doing anything fancy with ties, dual-vars or non-scalars. In the end, it's probably a bug though.

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