Re: Re: Re: Re: creating an array of names

Using = when you mean == or eq can be very confusing.

Which is why it is a good idea to put the the constant on left-hand side of a numerical comparison

0 == $foo; # GOOD
0 =  $foo; # BAD

__output__

Can't modify constant item in scalar assignment at - line 2, near "$fo
+o;"
Execution of - aborted due to compilation errors.
[download]

So we get a nice compile-time error if we ever slip up with our numerical comparisons, hurrah!
HTH

_________ broquaint

Comment on Re: Re: Re: Re: creating an array of names Download Code

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Re: Re: Re: Re: Re: creating an array of names by tachyon (Chancellor) on Nov 11, 2002 at 19:31 UTC
Cute, don't know if I could ever get into the habit but cute nonethless. cheers tachyon s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print	[reply]
Re: Re: Re: Re: Re: creating an array of names by John M. Dlugosz (Monsignor) on Nov 11, 2002 at 19:43 UTC
I also exagerate the visible difference by writing assignment with asymetric spacing and equality with symetric spacing. `$a= 5; if ($a==$b \|\| $c == $d)` [download]	[reply] [d/l]
Re: Re: Re: Re: Re: creating an array of names by sauoq (Abbot) on Nov 11, 2002 at 21:39 UTC
Although I'm familiar with this practice I really don't care for it much. Admittedly, it's just a personal preference. I don't think it flows as well when reading it though. More importantly, there simply is no substitute for learning to be cautious. This trick works nicely when one of the operands is a constant but not at all when they are both variables. -sauoq "My two cents aren't worth a dime.";	[reply]