文章整合

指针进阶，字符串函数

文章目录指针笔试题 1 1. 1 3 2. 2 6 3. 3 9 4. 4 22 5. 5 36 6. 6 50 7. 7 63 8. 8 77 字符串函数 93 strlen strlen 94 strlen使用中的易错点 strlen 106 strlen 模拟实现 strlen 108 s...
2022-07-07 06:00【epsilon279】
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oracle一次性说清楚，多种分隔符的一个字段拆分多行，再多行多列多种分隔符拆多行，最终处理超亿亿。。亿级别数据量

目录 *前言： %F0%9F%8E%88%E5%89%8D%E8%A8%80%EF%BC%9A *一、多种分隔符的一个字段拆分多行 %F0%9F%8E%88%E4%B8%80%E3%80%81%E5%A4%9A%E7%A7%8D%E5%88%86%E9%9A%94%E7%AC%A6%E7%9A%8...
2022-07-07 06:01【他们叫我技术总监】
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Greenplum6.x常用语句

一.创建目录 root用户登录四台服务器，每台都执行下面操作 [email protected] tmp / mkdir p /datax/tbs tmp [email protected] tmp / mkdir p /datax/tbs tmp2 / 赋权限 [email protected] tmp / chown gpadmin:gpadmi...
2022-07-07 06:01【xcSpark】
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Greenplum6.x重新初始化

换一种初始化方式一. 规划目录 root用户登录操作 / master机器 mkdir p /datax/master chown gpadmin:gpadmin R /datax/master / standby 机器 mkdir p /datax/master chown gpadmin:gp...
2022-07-07 06:01【xcSpark】
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Greenplum6.x监控软件搭建

一. 下载软件下载地址 command center/ 在搜索栏中输入关键词进行搜索 https://img blog.csdnimg.cn/ab81047023bc459c89eaeab3d89808f6.png 选择对应的版本，点击下载（需要登录账号） https://img blog....
2022-07-07 06:01【xcSpark】
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Greenplum6.x搭建_安装

Greenplum6.x安装服务器环境配置完成后，进行安装操作。一. 安装Greenplum 1. 上传软件包 root用户登录master机器192.168.0.110 将下载的greenplum db 6.18.2 rhel7 x86 64.rpm安装包上传到/opt目录下然后赋可执行权...
2022-07-07 06:01【xcSpark】
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Greenplum6.x搭建_环境配置

Greenplum6.x搭建之服务器环境配置一. Greenplum数据库下载地址商业版下载地址: gpdb 社区版本下载地址: db/gpdb 官网：中文： github项目： db/gpdb db/gpdb/blob/master/gpdb doc/README.md 二....
2022-07-07 06:01【xcSpark】
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Greenplum6.x-版本变化记录-常用手册

一. 搭建相关 Greenplum 环境搭建和基本查错 6.x版本 0/relnotes/gpdb 60 release notes.html Greenplum各版本更新内容 18/relnotes/release notes.html 二. 6.x版本更新内容 18/admin...
2022-07-07 06:01【xcSpark】
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求有符号数的原码、反码和补码【C语言】

// 有符号二进制数求反码和补码/ / / include stdio.h int main { int n,d,i,j; printf '请输入有符号二进制数的位数：' ; scanf '%d', n ; int a n ,b n ,c n ; printf '请输入该二进制数：' ; for i...
2022-07-07 06:04【每天默默学习】
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Sign and authenticate API interface or H5 interface

Parameter signature authentication To prevent client access API The interface is attacked by camouflage 、 Security risks such as data leakage . ...
2022-07-07 08:40【Why not 0307】
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Three usage scenarios of annotation @configurationproperties

stay Spring Boot Notes in @ConfigurationProperties There are three usage scenarios , In general, we only use one of the scenes most . This article ta...
2022-07-07 08:41【Dream and sea depth @ none】
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let const

start I come to study again ES6 了 . Because I found that I was using some ES6 Of API When , I always think it's almost funny . Take some time. , ...
2022-07-07 08:41【lazytomato】
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[step on the pit] Nacos registration has been connected to localhost:8848, no available server

Today, I found a problem when sorting out Alibaba's wechat , Error reported at startup no available server, Then I found that I had been connected lo...
2022-07-07 08:41【Dream and sea depth @ none】
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Gson converts the entity class to JSON times declare multiple JSON fields named

A problem I encountered when testing the project on the user server today , Log printing is ： java.lang.IllegalArgumentException:…declares multiple J...
2022-07-07 08:41【coder_ monarch】
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Shell script for changing the current folder and the file date under the folder

/ /bin/bash function changeName { / new= echo $1 sed 's/^/abc/g' / new= echo $1 sed r 's/abc ./ $ / 1/g' new= echo $1 sed r 's/20220630/20220707/g' / ...
2022-07-07 08:42【Chen duo meat & J】
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[Nanjing University] - [software analysis] course learning notes (I) -introduction

List of articles Nanjing University Static program analysis Static program analysis 1 introduction introduction 3 1. program language and static ...
2022-07-07 08:42【Xihang】
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A bug using module project in idea

situation ： if module There are jsp page ,Controller Jump path will not be displayed jsp page resolvent working directory add / / $ MODULE WORKI...
2022-07-07 08:42【One duck, one duck】
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How to add a mask of a target in a picture

Matplotlib yes Python Amazing visualization library for array two-dimensional graphs in . Matplotlib It's based on NumPy Multi platform data vis...
2022-07-07 08:42【Top of the program】
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Image segmentation in opencv

Original picture ： https://img blog.csdnimg.cn/1e609703ea5d4e2b8334493fa4f86c1e.png pic center The graph obtained by final segmentation ： https://im...
2022-07-07 08:42【Top of the program】
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QT charts use (rewrite qchartview to realize some custom functions)

List of articles 1、charts Easy to use 1charts 2 2、 rewrite QChartView 2QChartView 35 Please add a picture description https://img blog.csdnimg.c...
2022-07-07 08:42【Xiaozhu】
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