技术专区
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android 动态添加 fragment
按钮点击触发: public void execute(View view) throws Exception { FragmentManager fm = getFragmentManager(); FragmentTransaction ft = fm.beginTransaction(); ft.add(R.id.fragmentContainer, new s…
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Data Sharing in Snowflake
by Ramana Kumar Gunti Data Sharing in Snowflake In this article, we will talk about Snowflake data sharing which enables account-to-account sharing of data through Snowflake database tables, secure v…
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Manual performance optimization in Denodo – Most relevant and most used techniques
by Manju Das Manual performance optimization in Denodo – Most relevant and most used techniques We are going to discuss how to optimize the Denodo query to make the most of the optimization in the De…
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Java·初篇 01认识第一个程序
Java·初篇 01认识第一个程序 一、前期准备 【环境搭建】 (https://www.java.com/zh-CN/) 了解JRE和JDK JDK的下载和按照 【常用DOS命令】 目的:使用JDK,在bin目录中编译javac.exe和运行java.exe工具。 打开方式…
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Spring Batch Admin Example
Looking for a Spring Batch Admin UI tutorial? You might be surprised to learn it is no longer supported. But don’t worry as in this post I’ll show you the recommended replacement. And how to set it u…
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customer
customer [Origin: custom; from the custom of doing business in a particular place] In sales, commerce and economics, a customer (sometimes known as a client, buyer, or purchaser) is the recipient of …
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路由器功能----组播
1. IGMP监听(IGMP Snooping)能够帮助交换机了解哪些主机请求接受特定多播应用的流量以及这些主机都连接在哪些交换机端口上 2.多播路由协议: PIM-SM(Protocol Independent Multicast Sparse Mode)协议无关…
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CF1506G 题解
前言 题目传送门! 更好的阅读体验? 校内考试题目。写一篇题解。 思路 首先记录每个字符出现了多少次,然后创建单调栈。 看当前字符是否入栈,如果没有入栈,就不停 pop(),直到: 栈空了。 栈顶字典序大于当前字…
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P8444 题解
前言 题目传送门! 更好的阅读体验? 普及组月赛第二题。特殊数据好恶心啊,考试差点丢分了。 思路 贪心题,先给 /(a/) 数组排个序。 首先,肯定是买小于等于 /(w/) 的最大价格的物品。如果买不到,直接输出 /(0/)…
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看起来很高级的符号
rt,其实是用来方便自己学莫比乌斯反演的......像 /(/sum/) 这种东西干嘛要加,反正是给我自己看看的...... /(/varphi(n)/):/(/sum/limits_{i=1}^{n-1}/left[gcd(n, i) = 1/right]/) /(/tau(n)/):/(n/) 的约数个…