comm和join的临时笔记
摘要：
一言概之，要求数据都是字典序的。另外sort -n 比没有-n慢，一个sort多个-k比多个sort加管道慢。over。 阅读全文
posted @ 2012-08-28 15:01 Qwertycen 阅读(124) 评论(0) 推荐(0) 编辑
gcc宏返回值的官方定义
摘要：
Statements and Declarations in ExpressionsA compound statement enclosed in parentheses may appear as an expression in GNU C. This allows you to use loops, switches, and local variables within an expression.Recall that a compound statement is a sequence of statements surrounded by braces; in this con 阅读全文
posted @ 2012-08-28 14:54 Qwertycen 阅读(1291) 评论(0) 推荐(0) 编辑
