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## 문제 - [링크](https://leetcode.com/problems/custom-sort-string/)
## 문제 풀이
- 주어진 문자 순서를 만족하는 문자열 출력하기
### 주어진 순서를 만족하게 하는 Comparator 만들기
- `HashMap`을 이용하여 해당 문자의 순서값 가져오기. 존재하지 않다면 최댓값 리턴
```…
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Don't know the reason for `StackOverflowError` or use case, only logs.
Server logs:
```
java.lang.StackOverflowError
at java.util.HashMap.hash(HashMap.java:339)
at java.util.HashMap.get(H…
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I had this exception. It is not common, but it happens.
``` java
java.lang.ClassCastException: java.util.HashMap$Node cannot be cast to java.util.HashMap$TreeNode
at java.util.HashMap$TreeNode.re…
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One of the CI cron jobs got updated to clang-17 and everything went haywire:
```
../root/systemd/src/basic/hashmap.c:350:9: runtime error: call to function string_hash_func through pointer to inco…
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Should be implement an Equaler interface?
Assert Map implementation
https://github.com/JonasMuehlmann/datastructures.go/blob/9fc52d22f99dd56ec413cdba5edaf69e605d153b/maps/hashbidimap/hashbidimap.go#…
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这个参数在混淆时是作什么用的？看到好多是说保存泛型信息，自己测试了下，感觉理解有些问题。附测试方法，看是什么问题？
源码
```
package com.example.pc.myapplication.utils;
import android.support.annotation.Keep;
import java.util.ArrayList;
import java…
ghost updated
4 years ago
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```
In the run() method a for loop is iterating through the scripts HashMap which
is not protected from mutation during the iteration:
for (URL url : this.scripts.keySet()) {
both the run()…
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## 并发
### 同步类
- [见识不一样的 ConcurrentHashMap](https://mp.weixin.qq.com/s/UXV34hYMHwsFBe9AQCZvLg)
### ThreadLocal
- [ThreadLocal 的奇思妙想](https://mp.weixin.qq.com/s/ucxzyP3GlOdjCRlQgOiy9g)
### 线程…
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## Problem
Today, `ErasedLoadedAsset` holds the asset as `Box`, and holds subassets as `HashMap` (not really, but for simplicity, this is true). This means that subassets can themselves hold subass…