04 2021 档案

perl FileHandle 模块使用
摘要：打开多个文件时必备啊 1 use FileHandle; 2 3 my (%index,%fh); 4 # 创建句柄,这里利用gzip 压缩下 5 foreach my $k(keys %index){ 6 $fh{$k}=FileHandle->new("| gzip -c > ${k}_1.tx 阅读全文
posted @ 2021-04-23 16:30 un-define 阅读(198) 评论(0) 推荐(0)
perl substr
摘要：substr EXPR,OFFSET,LENGTH,REPLACEMENT substr EXPR,OFFSET,LENGTH substr EXPR,OFFSET Extracts a substring out of EXPR and returns it. First character is 阅读全文
posted @ 2021-04-21 11:13 un-define 阅读(180) 评论(0) 推荐(0)
Browse Code Answers
摘要：一个记录各种语言可能遇到的问题的论坛 :https://www.codegrepper.com/code-examples/ 阅读全文
posted @ 2021-04-16 17:34 un-define 阅读(83) 评论(0) 推荐(0)