| 标题 | perl读写文件代码实例 |
| 分类 | 范文、应用文-IT技术专栏-网络编程 |
| 范文 | 这篇文章主要介绍了perl读写文件代码实例,本文直接给出实现代码,需要的朋友可以参考下 #mode operand create truncate #read < #write > yes yes #append >> yes Case 1: Throw an exception if you cannot open the file: 代码如下: use strict; use warnings; my $filename = 'data.txt'; open(my $fh, '<:encoding(UTF-8)', $filename) or die "Could not open file '$filename' with the error $!"; while (my $row = <$fh>) { chomp $row; print "$row\n"; } close($fh); Case 2: Give a warning if you cannot open the file, but keep running: 代码如下: use strict; use warnings; my $filename = 'data.txt'; if (open(my $fh, '<:encoding(UTF-8)', $filename)) { while (my $row = <$fh>) { chomp $row; print "$row\n"; } close($fh); } else { warn "Could not open file '$filename' $!"; } Case 3: Read one file into array 代码如下: use strict; use warnings; my $filename = 'data.txt'; open (FILEIN, "<", $filename) or die "Could not open file '$filename' with the error $!"; my @FileContents = ; for my $l (@FileContents){ print "$l\n"; } close FILEIN; |
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