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删除数据库中所有存在表的数据
create or replace function clear_table_data() returns text as $$ declare select_result record; table_name varchar; begin for select_result in select r... ...
分类:数据库   时间:2018-10-08 14:55:18    阅读次数:190
[LeetCode] Generate Random Point in a Circle 生成圆上的随机点
Given the radius and x-y positions of the center of a circle, write a function randPoint which generates a uniform random point in the circle. Note: E ...
分类:其他好文   时间:2018-10-04 11:40:39    阅读次数:196
谈谈函数式编程curry
Curry概念 The concept is simple: You can call a function with fewer arguments than it expects. It returns a function that takes the remaining arguments. ...
分类:其他好文   时间:2018-10-01 19:52:36    阅读次数:237
c# UTF-16转UTF-8 互转
/// /// UTF-16转UTF-8 /// /// /// public static string UTF16To8(string str) { string res; int i, len, c; res =... ...
分类:Windows程序   时间:2018-10-01 11:58:55    阅读次数:395
LeetCode 344 Reverse String
Write a function that takes a string as input and returns the string reversed. Example 1: Input: "hello" Output: "olleh" Example 2: Input: "A man, a p ...
分类:其他好文   时间:2018-09-30 14:43:01    阅读次数:127
红黑树
红黑树 https://www.cnblogs.com/wuqinglong/p/9709048.html 目录 概念 特征 旋转 左旋 左旋示例图 参考TreeMap的左旋代码 右旋 右旋示例图: 参考TreeMap的右旋代码: 寻找节点的后继 插入 情况1: 新节点(当前节点)为根节点 情况2: ...
分类:其他好文   时间:2018-09-28 16:31:44    阅读次数:168
elasticsearch--- Exists Query
Exists Queryedit Exists Queryedit Exists Queryedit Exists Queryedit Returns documents that have at least one non-null value in the original field: GET ...
分类:其他好文   时间:2018-09-28 12:41:49    阅读次数:553
c# 获取客户端IP
/// /// 获得当前页面客户端的IP /// /// 当前页面客户端的IP public static string GetIP() { try { string result = String.Empty; ... ...
分类:Windows程序   时间:2018-09-27 22:10:47    阅读次数:206
LeetCode - Encode and Decode TinyURL
TinyURL is a URL shortening service where you enter a URL such as https://leetcode.com/problems/design-tinyurl and it returns a short URL such as http ...
分类:Web程序   时间:2018-09-27 13:10:00    阅读次数:159
characterAtIndex:
Instance Method characterAtIndex: Returns the character at a given UTF-16 code unit index. Language Swift Objective-C SDKs iOS 2.0+ macOS 10.0+ tvOS 9 ...
分类:其他好文   时间:2018-09-27 01:42:42    阅读次数:233
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