08 2016 档案

sed
摘要：sed -n "20,30p" afile 阅读全文
posted @ 2016-08-29 15:16 jvava 阅读(129) 评论(0) 推荐(0)
gem install bundler
摘要：http://stackoverflow.com/questions/7483515/rake-aborted-no-such-file-to-load-bundler-setup-rails-3-1 $ rake installrake aborted!LoadError: cannot load 阅读全文
posted @ 2016-08-27 09:41 jvava 阅读(569) 评论(0) 推荐(0)
dpkg -P <pkg>
摘要：http://www.linuxquestions.org/questions/debian-26/how-do-i-get-rid-of-those-rc-packages-as-seen-in-dpkg-l-output-418956-print/ 阅读全文
posted @ 2016-08-27 09:39 jvava 阅读(341) 评论(0) 推荐(0)
invalid receiver type
摘要：Because in a case like this: type I int type P *I func (i I) Get() int { return int(i) } func (p P) Get() int { return int(*p) } var v I var x = (&v). 阅读全文
posted @ 2016-08-07 10:38 jvava 阅读(628) 评论(0) 推荐(0)
rune is alias of int32
摘要：I think chendesheng's quote gets at the root cause best: Go uses a lot of signed values, not just for runes but array indices, Read/Write byte counts, 阅读全文
posted @ 2016-08-06 19:34 jvava 阅读(153) 评论(0) 推荐(0)