原创 What does "Vanilla" mean ?
Generally speaking, we say something is Vanilla when it’s as “pure” as its producer did in computing world. (The te
2020-07-02 10:02:26
原创 ubuntu 全局使用Emacs keybindings
在OSX下使用Ctrl-a,e,f,b,p,n習慣了，Windows下可以使用xkeymacs進行比較好的解決。現在換成ubuntu了卻有了很多不便。 ubuntu 下可以安裝gnome-tweak-tool有效地切換到emac
2020-07-02 10:02:26
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原创 使用Emacs發送郵件
個人感覺發郵件還是需要效率的，用Emacs來發郵件感覺效率槓槓的，比如想要發送一篇論文給好友等諸如此類的情況。 倒騰了一下，這裏以smtp的qq服務器爲例，配置如下 (setq send-mail-function (quo
2020-07-02 10:02:25
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原创 LeetCode Find All Numbers Disappeared in an Array
Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear onc
2020-07-02 10:02:25
原创 LeetCode Total Hamming Distance
The Hamming distance between two integers is the number of positions at which the corresponding bits are different.
2020-07-02 10:02:25
原创 OSX下brew cask install 本地安裝pkg，dmg
本來用brew cask 安裝東西很爽了，但是今天遇到要安裝mactex，這個2.5G的大軟件 而brew cask install太慢了！！！搭建國內源感覺不靠譜的樣子，好像問題亂七八糟的，怕以後維護起來麻煩不斷。 所以想起來本地安裝迅
2020-02-23 14:33:16
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原创 Spacemacs 如何在指定工程下刪除所有以fprintf開頭的行？
在Emacs-china論壇中，有網友問如題所示的問題。 其實這樣的需求在真實項目中卻遇到的不少，比如需要上線運行，需要刪除所有類似的輸出語句。 我使用helm-ag做的，搜索工程下的所有fprintf開頭的行，然後對搜索結果進行C-c
2020-02-23 14:33:16
原创 LeetCode Fizz Buzz
Write a program that outputs the string representation of numbers from 1 to n. But for multiples of three it should
2020-02-23 14:33:16
原创 LeetCode Next Greater Element I
You are given two arrays (without duplicates) nums1 and nums2 where nums1’s elements are subset of nums2. Find all
2020-02-23 14:33:16
原创 LeetCode Number Complement
Given a positive integer, output its complement number. The complement strategy is to flip the bits of its binary r
2020-02-23 14:33:16
原创 LeetCode Max Consecutive Ones
Given a binary array, find the maximum number of consecutive 1s in this array. Example 1: Input: [1,1,0,1,1,1] Ou
2020-02-23 14:33:16
原创 ubuntu 16.04 安裝hp 掃描打印一體機
Linux下一般使用sane做爲掃描儀後端，安裝如下： sudo apt-get install sane sane-utils xsane kirchhoff@kirchhoff-dell:~/Downloads$
2020-02-23 14:33:16
原创 LeetCode Hamming Distance
The Hamming distance between two integers is the number of positions at which the corresponding bits are different.
2020-02-23 14:33:16
原创 LeetCode Find the Difference
Given two strings s and t which consist of only lowercase letters. String t is generated by random shuffling string
2020-02-23 14:33:06
原创 LeetCode Island Perimeter
You are given a map in form of a two-dimensional integer grid where 1 represents land and 0 represents water. Grid
2020-02-23 14:33:06