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Diffstat (limited to 'pod/perltrap.pod')
| -rw-r--r-- | pod/perltrap.pod | 16 |
1 files changed, 3 insertions, 13 deletions
diff --git a/pod/perltrap.pod b/pod/perltrap.pod index 786dcda607..7ba57d0c70 100644 --- a/pod/perltrap.pod +++ b/pod/perltrap.pod @@ -923,7 +923,9 @@ Perl4-to-Perl5 traps involving precedence order. =item * Precedence -LHS vs. RHS when both sides are getting an op. +LHS vs. RHS of any assignment operator. LHS is evaluated first +in perl4, second in perl5; this can affect the relationship +between side-effects in sub-expressions. @arr = ( 'left', 'right' ); $a{shift @arr} = shift @arr; @@ -999,18 +1001,6 @@ concatenation precedence over filetest operator? # perl4 prints: no output # perl5 prints: Can't modify -e in concatenation -=item * Precedence - -Assignment to value takes precedence over assignment to key in -perl5 when using the shift operator on both sides. - - @arr = ( 'left', 'right' ); - $a{shift @arr} = shift @arr; - print join( ' ', keys %a ); - - # perl4 prints: left - # perl5 prints: right - =back =head2 General Regular Expression Traps using s///, etc. |