https://opensourcedoc.com/applied-c-programming/object-oriented-programming-primer/
Tuesday, November 24, 2020
Monday, November 23, 2020
Sunday, November 22, 2020
Tuesday, November 17, 2020
Tuesday, November 10, 2020
git update
sudo add-apt-repository -y ppa:git-core/ppa
sudo apt-get update
sudo apt-get install git -y
Monday, November 9, 2020
vim index
vim 刪除每行前/後 n 個字元
1、刪除每行前10個字元:
:%s/^.\{10\}//
其中,%表示所有行,s表示替換,"%s"可用"1,$"代替(下同);正則表示式"/^.\{10\}//"中,^表示行首;"."表示要刪除的字元個數,".\{10\}"表示刪除10個字元,可用10個"."表示;
2、刪除每行後10個字元
:%s/.\{10\}$//
其中,"$"表示行尾,其他同上;
删除空格行:
:g/^$/d
删除行首空格:
:%s/^\s*//g
删除行尾空格:
:%s/\s*$//g
Tuesday, November 3, 2020
HEAD detached at the HEAD commit id
git status
HEAD detached at e1997bd
git rev-parse HEAD
e1997bd
git checkout <commit_id>
-- or --
git checkout origin/master
git checkout <branch_name>
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