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by name parameter & _的用法
A by-name parameter acts like a def. Scala has a solution to this problem called by-name parameters. By declaring a parameter as a: => A (note that th ...
分类:其他好文   时间:2017-10-07 17:30:02    阅读次数:244
Python操作csv文件
1.什么是csv文件 The so-called CSV (Comma Separated Values) format is the most common import and export format for spreadsheets and databases. CSV format wa ...
分类:编程语言   时间:2017-10-03 17:49:46    阅读次数:192
[TS] Parse a string to an integer
A common interview question is to write a?function?that?converts a string?into?an?integer e.g. "123" => 123. This function is commonly called atoi bec ...
分类:其他好文   时间:2017-10-03 16:58:01    阅读次数:202
树状数组/线段树
问题描述:给定一序列,求任意区间(i, j)的元素和;修改任意一元素,实现快速更新 树状数组 树状数组的主要特点是生成一棵树,树的高度为logN。每一层的高度为k,分布在这一层的序列元素索引的二进制表达有个共同的特点,就是最低二次幂为k。 子树间有很强的联系,即,给定一序列元素索引i,可以推知该元素 ...
分类:编程语言   时间:2017-10-03 00:26:44    阅读次数:314
LeetCode Arithmetic Slices
原题链接在这里:https://leetcode.com/problems/arithmetic-slices/description/ 题目: A sequence of number is called arithmetic if it consists of at least three el ...
分类:其他好文   时间:2017-10-01 12:17:42    阅读次数:218
stacked generalization 堆积正则化 堆积泛化 加权特征线性堆积
https://en.wikipedia.org/wiki/Ensemble_learning Stacking Stacking (sometimes called stacked generalization) involves training a learning algorithm to ...
分类:其他好文   时间:2017-09-29 12:39:53    阅读次数:186
How to Sign in as a Different User in SharePoint 2013
SharePoint used to have a menu option called "Sign in as Different User" in the top-right corner of every page. It was a handy tool for developers and... ...
分类:其他好文   时间:2017-09-28 13:05:37    阅读次数:183
efcore数据库自动生成
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline. public void Configure(IApplicationBuilder app, IHos... ...
分类:数据库   时间:2017-09-25 16:14:33    阅读次数:207
cocos2dx-js 初探 整体流程helloworld.html分析
我们下载的是cocos2dx-js的精简版本,主要是为了分析简单明了,能更清楚的看到架构流程。下载地址:http://cocos2d-x.org/filecenter/jsbuilder/下载轻量版。 百牛信息技术bainiu.ltd整理发布于博客园 服务器模拟使用xampp软件。调试使用360浏览 ...
分类:Web程序   时间:2017-09-24 23:39:53    阅读次数:299
ACM-ICPC北京赛区(2017)网络赛2【后缀数组+Java//不会】
#1579 : Reverse Suffix Array #1579 : Reverse Suffix Array 时间限制:1000ms 单点时限:1000ms 内存限制:256MB 描述 There is a strong data structure called "Suffix Array" ...
分类:编程语言   时间:2017-09-24 11:42:03    阅读次数:269
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