Git strategy

 develop, feature, hotfix : squash & rebase

main, release: squash

git-flow에서 


  • Merge 커밋이 있으면 쉽게 되돌릴 수 있다.
  • 모든 커밋이 빌드된다면 커밋이 많을수록 git bisect가 좋아진다. 
  • 이상적으로 커밋은 +50/-50 정도로 유지하는 것이 좋다.
  • PR에 많은 WIP 커밋이 있지만 하나의 목표라면 Squash를 한다

commit message 규격화 - commit conventions.

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Interface of Java

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Data Analytics Overview(OLTP vs OLAP)

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Leetcode

이미지
1. Two Sum: find a pair with specific sum   class Solution : def twoSum ( self , nums : List [ int ] , target : int ) - > List [ int ] : numMap = { } n = len ( nums ) # Build the hash table for i in range ( n ) : numMap [ nums [ i ] ] = i # Find the complement for i in range ( n ) : complement = target - nums [ i ] if complement in numMap and numMap [ complement ] != i : return [ i , numMap [ complement ] ] return [ ] # No solution found You might wonder how does the code deals with duplicates. As you can see, in the iteration of building the hash table, always the latter(with bigger index) will be saved in the hash table. In the latter iteration finding the complement, the former one(with smaller index) always goes through the iteration earlier, so the [i, numMap[complement]] can return two different indexes, carrying duplicate...
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