perl 遍历数组

[perl]代码库

#-----------------------------
# iterate over elements of array in $ARRAYREF
foreach $item (@$ARRAYREF) {
    # do something with $item
}

for ($i = 0; $i <= $#$ARRAYREF; $i++) {
    # do something with $ARRAYREF->[$i]
}
#-----------------------------
@fruits = ( "Apple", "Blackberry" );
$fruit_ref = \@fruits;
foreach $fruit (@$fruit_ref) {
    print "$fruit tastes good in a pie.\n";
}
Apple tastes good in a pie.

Blackberry tastes good in a pie.
#-----------------------------
for ($i=0; $i <= $#$fruit_ref; $i++) {
    print "$fruit_ref->[$i] tastes good in a pie.\n";
}
#-----------------------------
$namelist{felines} = \@rogue_cats;
foreach $cat ( @{ $namelist{felines} } ) {
    print "$cat purrs hypnotically..\n";
}
print "--More--\nYou are controlled.\n";
#-----------------------------
for ($i=0; $i <= $#{ $namelist{felines} }; $i++) {
    print "$namelist{felines}[$i] purrs hypnotically.\n";
}
#-----------------------------