Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
574 views
in Technique[技术] by (71.8m points)

perl - How do I remove the first five elements of an array?

@array = qw(one two three four five six seven eight);
<Some command here>
print @array;
See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

Here are a few ways, in increasing order of dumbness:

Using a slice:

@array = @array[ 5 .. $#array ];

Using splice:

splice @array, 0, 5;

Using shift:

shift @array for 1..5;

Using grep:

my $cnt = 0;
@array = grep { ++$cnt > 5 } @array;

Using map:

my $cnt = 0;
@array = map { ++$cnt < 5 ? ( ) : $_ } @array;

I'm sure far better hackers than I can come up with even dumber ways. :)


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...