June 2002
Beginner
759 pages
80h 42m
English
first
first { BLOCK } @list
Evaluates a block of Perl code and sets $_ to each element of the list in turn.
If BLOCK is true, first returns the first element. If
BLOCK never returns true, or @ list has no
items, then first returns
undef. Note that first doesn’t necessarily return the
first item in a list. Consider the following:
my @ll = qw(1 2 3);
my $fir = first { $_ > 1 } @ll;
print "$fir\n"; # Prints '2', since as 2 is the first item
# in BLOCK that's > 1