Chiba.pm #5 LT

1. PATH::TINY
Chiba.pm #5 / @waniji

2. ß…Ãu
@waniji
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VimsPerl„PrŠe

3. PATH::TINYt{
Ô £êìfá·ä–ê
Path::ClasszTinyh
File::Spec, File::Copy, File::Temp, File::Path, File::statvuž
žoríR{vX|_zá·ä–ê1pslPkPca
Še
David Golden·XAuthor

4. _Ÿv_tXcaŠe
my $file = path("/home/waniji/memo.txt");
# ファイル名のみ表示
say $file->basename;
# ファイルに書き込み
my $fh = $file->openw;
$fh->print("chiba.pm")
# ファイルの内容をすべて読み込み
my $data = $file->slurp;
# ファイルを削除
$file->remove;
# 一時ファイルを作成
my $temp = Path::Tiny->tempfile;

5. Æ¢ë®ÇéAzÔ £êDžª¥òÇ
my $file = path(/home/waniji/);
my $iterator = $file-iterator( { recurse = 1 } );
while( my $object = $iterator-() ) {
$count++ if $object-is_file;
}

6. Po}P/^•˜—
# /home/waniji/chibapm/memo.txt に aaa という文字列を書き込み
my $file = path(/home/waniji/memo.txt);
$file-parent-child(chibapm, memo.txt)-touchpath-openw-print(aaa);

7. PATH::CLASStz‡¶
ŸaP
íP
1Ô £ê
UTF-8Jzà¼ÂÈXJa˜rP—
Unix or Windows z‹”f;Ë

8. ØòÀÝ–®(Ô £êw„YŸsg)
my $path = /home/waniji/hoge.txt;
cmpthese( 10000, {
'Path::Tiny' = sub {
my $file = path($path);
$file-openw-print(aaa);
$file-remove;
},
'Path::Class' = sub {
my $file = file($path);
$file-openw-print(aaa);
$file-remove;
},
});
Rate Path::Class Path::Tiny
Path::Class 1862/s -- -29%
Path::Tiny 2632/s 41% --

9. ØòÀÝ–®(Æ¢ë®ÇéAzÔ £êžª¥òÇ)
my $path = /home/waniji/temp;
cmpthese( 100, {
'Path::Tiny' = sub {
my $dir = path($path);
my $iterator = $dir-iterator( { recurse = 1 } );
my $count;
while( my $object = $iterator-() ) {
$count++ if $object-is_file;
}
},
'Path::Class' = sub {
my $dir = dir($path);
my $count;
$dir-recurse( callback = sub {
my $object = shift;
$count++ if -f $object;
});
},
}); Rate Path::Class Path::Tiny
Path::Class 10.7/s -- -67%
Path::Tiny 32.1/s 200% --

10. UTF-8zÔ £êžopencr‹—
# Path::Class
my $fh = $file-open(':encoding(UTF-8)') or die can't open $file: $!;
# Path::Tiny
my $fh = $file-openr_utf8;

11. PATH::TINYsÎÝok_t

12. ì–ªêW•NFSwÔ £êž¤”
my $file = path(/home/waniji/memo.txt);
$file-move(/nfs/memo.txt);
ŒŒ
¾{±¿z¶{½
‹Y^Y^Y^Y^Y‹

13. Path::Tinyzmove{ÆósrenamežžJcrP—k| £v
—Ô £ê¶¸Åßw¤”e—_t{cavP}
sub move {
my ( $self, $dst ) = @_;
return rename( $self-[PATH], $dst )
|| $self-_throw( 'rename', $self-[PATH] . ' - '$dst' );
}

14. PCŽ
use File::Copy 'move';
move $file, /nfs/memo.txt;

15. Št
6q