certificate chain trust of
CS61A: Structure and Interpretation of Computer Programs 笔记
Functions Environment Diagrams：左侧为 Frames，右侧为 Objects。 Name 类似变量名，它们存储在 Frame 中，指向各种各样的 Objects，比如值或函数。一个 Name 同时只能指向一个 Object，但可以改变自身指向，不受“类型”影响（Name ......
Docker|--E: gnupg, gnupg2 and gnupg1 do not seem to be installed, but one of them is required for this operation
错误 apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 871920D1991BC93C E: gnupg, gnupg2 and gnupg1 do not seem to be installed, but one of them ......
Go - Live reload of configurations
main.go: package main import ( "encoding/json" "fmt" "log" "os" "time" "github.com/fsnotify/fsnotify" ) type config struct { Name string `json:"name"` ......
nginx访问报错“maximum number of descriptors supported by select() is 1024 while connecting to upstream”问题的处理
1、问题背景 项目：一个人力的系统，主要用于考勤打卡 环境：windows server nginx版本：1.22 问题说明：当早上访问人数增加的时候，就会出现nginx的异常 nginx的后台报错日志： maximum number of descriptors supported by sele ......
[892] Change the background color of a table in a Word document
ref: python-docx Changing Table Cell Background Color. To change the background color of a table in a Word document using Python, you can use the pyth ......
Shrine( Flask SSTI of config )
来自： [WesternCTF2018]shrine 打开是一段源码，这里贴一下： import flask import os app = flask.Flask(__name__) app.config['FLAG'] = os.environ.pop('FLAG') #注册了一个名字为FLAG ......
How to get the original size of an image using JavaScript All In One
How to get the original size of an image using JavaScript All In One
如何使用 JavaScript 获取一个图片像的原始大小
naturalWidth & naturalHeight
aspect ratio / 纵横比
......
爱数anybackup——控制台建立对应的ofs卷、重删卷、自备份卷、元数据卷
以admin登录系统，点击【存储】>【节点管理】>【配置】>【卷管理】 选择对应的【卷类型】 点击【+新建】 输入【卷名称】，选择【挂载路径】，输入【容量】，然后点击创建即可 ......
Knights of the Round Table
prologue 相信很多人都感觉这个题不就是求一下这个二分图的最大独立集嘛，有什么难的，（劈里啪啦、库里跨啦、叮里哐啷）好，不对，好好好，题解！ analysis 这个题目实际上并不是一个完整的最大独立集问题，因为在这个题里面，是可以有相互仇恨的骑士的，只要不让他们二人坐成同桌就行。 那么我们就不 ......
How to fix TypeScript error: expression of type can't be used to index type All In One
How to fix TypeScript error: expression of type can't be used to index type All In One
type guard
......
CF1879D Sum of XOR Functions
异或和按位处理的典型例题。 要求所有子区间异或和乘区间长度的总和，朴素的方法是 \(O(n^2)\) 地枚举区间，显然无法通过。 因为涉及异或和，而异或运算不进位，故自然地想到把 \(a_i\) 写成二进制形式，单独研究每一位的贡献，最后再合并。这是处理此类问题的一般思路。 1. 二进制拆分 比方说 ......
[888] How to get the directory of the current Python file
To get the directory of the current Python file, you can use the os.path module in combination with the __file__ attribute. Here's how you can do it: ......
requests 响应头部转json时报错TypeError: Object of type CaseInsensitiveDict is not JSON serializable
前言 requests 响应头部在转json时，想格式化输出，结果报错TypeError: Object of type CaseInsensitiveDict is not JSON serializable 报错详情 示例代码 import requests import json # 上海悠悠 ......
ORA-04030: out of process memory when trying to allocate 27760032 bytes (qmxuParseXobWi,qmxsaxAllocMemInternal)
1.alter日志 2023-09-24T19:59:02.474578+08:00LOGMINER: Begin mining logfile for session -2147289087 thread 1 sequence 2185, +DATA/DB/ONLINELOG/redo05a.lo ......
Uncaught TypeError: Cannot read properties of undefined (reading 'form')问题的解决
问题描述 使用vue3执行数据添加操作时，发现了这个错误，使用测试按钮拿文本框数据，一直报错拿不到： 问题解决 原来是vue2在执行这个操作时： 里面放this.form; 而vue3在执行这个操作时， 里面放的却是：form ......
the solution of Mining Your Own Business
the description of problem （我看的是 PDF 里面的原题所以这里描述会和题目不一样，但是大意一致） 给定一个未必连通的无向图，问最少在几个点设置出口，可以保证任意一个点坍塌后，工人们仍然可以从出口逃生，同时问设置最少出口的方案数量。 thoughts & solution ......
1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column
博客园 首页 新随笔 联系 管理 订阅 随笔- 111 文章- 1 评论- 3 阅读- 17万 1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'i ......
ES报错：[parent] Data too large, data for [＜http_request＞] would be larger than limit of XXXX
ES报错：[parent] Data too large, data for [＜http_request＞] would be larger than limit of XXXX 当es这个错误的时候 ：[parent] Data too large, data for [<http_reques ......
Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column
MySQL有any_value(field)函数，他主要的作用就是抑制ONLY_FULL_GROUP_BY值被拒绝 官方有介绍，地址：https://dev.mysql.com/doc/refman/5.7/en/miscellaneous-functions.html#function_any-v ......
[LeetCode] 1353. Maximum Number of Events That Can Be Attended 最多可以参加的会议数目
You are given an array of events where events[i] = [startDayi, endDayi]. Every event i starts at startDayi and ends at endDayi. You can attend an even ......
Python 的 POC（Proof of Concept，概念验证）
Python 的 POC（Proof of Concept，概念验证） requests 当涉及到编写 Python 的 POC（Proof of Concept，概念验证）时，你可以按照以下步骤进行： 确认目标：明确你要验证的漏洞或要探测的系统。 寻找漏洞或系统的相关信息：查找关于该漏洞或系统的文 ......
## Could not find a working installation of Boost.
001、问题 002、解决方法 (base) [root@pc1 MaSuRCA-3.3.1]# yum -y install boost boost-devel (base) [root@pc1 MaSuRCA-3.3.1]# yum -y install gcc-c++.x86_64 gperf ......
Determinant of $A+Bz$
// created on 23.09.22 目录Determinant of \(A+Bz\) Determinant of \(A+Bz\) You are given two \(n\times n\) matrices \(A\) and \(B\) . For each \(k=0,1,\ ......
git SSL certificate problem unable to get local issuer certificate
git SSL certificate problem unable to get local issuer certificate 这个问题是由于没有配置信任的服务器HTTPS验证。默认，cURL被设为不信任任何CAs，就是说，它不信任任何服务器验证。只需要执行下面命令就可以解决： git con ......
解决：sass-loader@6.0.6 requires a peer of node-sass@^4.0.0 but none is installed. You must install peer dependencies yourself.
参考：https://blog.csdn.net/hancoder/article/details/113821646 去https://github.com/sass/npnode-sass 或者 https://github.com/sass/node-sass/releases 都可以看到no ......
Uncaught TypeError: Cannot read properties of undefined (reading 'type') from echarts
DON'T use ref or reactive to wrap the echarts instance. Use a common variable or shallowRef to avoid the deep watch for echarts instance. 不要使用 ref 或 r ......
MySQL 出现 String Index out of range: x 的原因
前言 调试代码时遇到一个很奇怪的问题, 对于一个很简单的 sql, 执行时会时不时的报异常 String Index out of range: x SQL: select * from test where area = 10 但直接把 SQL 丢 SQL 工具里跑又没什么问题, 百度了一圈都没找 ......
. Temporal table join currently only supports 'FOR SYSTEM_TIME AS OF' left table's time attribute field
org.apache.flink.table.api.ValidationException: SQL validation failed. Temporal table join currently only supports 'FOR SYSTEM_TIME AS OF' left table' ......
A piece of cake
1. A piece of cake（易事情）2. Break a leg（祝好运）3. Don't count your chickens before they hatch（不要过早乐观）4. Don't put all your eggs in one basket（不要孤注一掷）5. Eve ......
org/springframework/boot/maven/RepackageMojo has been compiled by a more recent version of the Java
项目场景：项目中执行clean，再执行install时报错，错误如下 org/springframework/boot/maven/RepackageMojo has been compiled by a more recent version of the Java Runtime (class ......