try with pipenvwebssh pipenv install virtualenv12345678910111213141516171819202122232425262728293031323334353637鉂??pipenv --python 3.8.9Creating a virtualenv for this project...Pip...

last time I come to this site is 2019, 3 years passed. I need to come here more often and write more. let’s see.

Analysis of an implementation of zookeeper distributed lockreferencelink the mechanism of zookeeper distributed locklet’s assume there are two clients try to get the zk’s lockas we...

select null exampleI saw a sql code snippet as this: 123456789101112131415161718192021222324252627 select * from ( select v.empno,v.ename,v.job,v.mgr,v.hiredate, v.sal,...

leetcode workd break II with scala solutiontop-down DP1234567891011121314151617181920212223242526272829303132def wordBreak(s: String, wordDict: List[String]): List[String] = {...

Definition of foldLeft and foldRightfoldLeft please notice the definition of op : (op: (B, A) => B) here, A is the element of the caller, B is the intermedia result of function...

at my previous code, i used PriorityQueue to solve this issue. I am not that faimiliar with scala syntax, so it takes me some time to figure out how th customized the comparator. f...

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ex 1123456789101112131415161718192021/** * ex 1 * * Improve the Counter class in Section 5.1, “Simple Classes and Parameterless Methods,” * on page 55 so that it doesn’t tu...

firstly put the time profile function and print function 1def prn(x: TraversableOnce[_]) = println(x.mkString(x.getClass.getSimpleName + "(", ", ", ")"...