方法一
handleBeforeUpload (file)const reader new FileReader()reader.readAsArrayBuffer(file)reader.onload async function (theFile) {const binary new Blob([theFile.target.result]) // 转成二进制流数据 即binary数据格式}}方法二 const aBlob new Blob([file],…
A.Lily
Problem - A - Codeforces
题意 思路
数所有周围没L的格子
#include <bits/stdc.h>using i64 long long;constexpr int N 2e5 10;
constexpr int mod 1e9 7;
constexpr int Inf 0x3f3f3f3f;
constexpr double eps 1e-10;std::string s;int n;void solv…
可以
示例
父类:Animal.class
public class Animal {Autowiredprivate PrometheusAlertService prometheusAlertService;public void eat(){System.out.println("eat food");}}
子类:Dog.class
Service
public class Dog extends Animal …