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Re^2: using split

by FunkyMonk (Chancellor)
on Jun 04, 2007 at 22:31 UTC ( [id://619248]=note: print w/replies, xml ) Need Help??


in reply to Re: using split
in thread using split

Well spotted. If I had any ++ left, you'd have got one:)

The OP should have picked this up himself. I was surprised to see that it generates a warning without strict or warnings:

#!/usr/bin/perl

my $x;

if ( $x = 4 ) {
    print "Hi";
}
#output
Found = in conditional, should be == at /home/pm line 5.
Hi

[download]

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Re^3: using split
by naikonta (Curate) on Jun 05, 2007 at 02:02 UTC
    I was surprised to see that it generates a warning without strict or warnings
    That's one of default warnings, known as mandatory warnings before use warnings; was introduced. These warnings will be enabled by default, but can be controlled with -X switch or warnings. So the following code will issue a warning as you mention: 
    perl -e 'my $x; if ($x = 1) {}'

    [download]
    But this code won't: 
    perl -Xe 'my $x; if ($x = 1) {}'

    [download]
    Neither these snippets: 
    # disable all warnings
no warnings;
my $x;
if ($x = 1) {}

# disable only warnings regarding syntax
no warnings 'syntax';
my $x;
if ($x = 1) {}

    [download]
    References: perllexwarn, perldiag

    Open source softwares? Share and enjoy. Make profit from them if you can. Yet, share and enjoy!

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