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linux升级python到2.7版本
linux的python安装包默认版本是2.6.6,yum程序默认也是依赖这个版本的python包的,但是其他一些程序如nodejs,却要的是2.7版本,因此必须要考虑升级后与yum的兼容问题。两步走,先升级python,再兼容yum: 下载python的2.7版本: 解压、编译: 好吧,编译失败, ...
分类:编程语言   时间:2019-11-02 09:26:01    阅读次数:149
使用wkwebview时,push后,再pop返回,报错
使用wkwebview时,push后,再pop返回,报错 Cannot form weak reference to instance (xxxx) of class xxxx. It is possible that this object was over-released, or is in ...
分类:Web程序   时间:2019-10-31 18:39:18    阅读次数:155
poj1753 (高斯消元法求异或方程组)
题目链接:http://poj.org/problem?id=1753 题意:经典开关问题,和poj1222一样,进行两次高斯消元即可,只用初始化的时候改一下初始状态。可能存在无解或多解的情况,多解要枚举自由变元的所有状态。 AC代码: ...
分类:其他好文   时间:2019-10-31 18:17:01    阅读次数:97
Python Ethical Hacking - VULNERABILITY SCANNER(7)
VULNERABILITY_SCANNER How to discover a vulnerability in a web application? 1. Go into every possible page. 2. Look for ways to send data to the web a ...
分类:编程语言   时间:2019-10-29 00:14:57    阅读次数:110
[LC] 90. Subsets II
Given a collection of integers that might contain duplicates, nums, return all possible subsets (the power set). Note: The solution set must not conta ...
分类:其他好文   时间:2019-10-21 09:28:45    阅读次数:95
Python Ethical Hacking - VULNERABILITY SCANNER(2)
VULNERABILITY_SCANNER How to discover a vulnerability in a web application? 1. Go into every possible page. 2. Look for ways to send data to web appli ...
分类:编程语言   时间:2019-10-20 16:26:21    阅读次数:86
2048Game
刚刚做了一道2048game的题目 You are playing a variation of game 2048. Initially you have a multiset ss of nn integers. Every integer in this multiset is a power ...
分类:其他好文   时间:2019-10-18 21:56:52    阅读次数:72
PropTypes.element和PropTypes.node的区别
PropTypes.element:指React Element,即React.CreateElement生成的元素,React.CreateElement可以用jsx语法糖表示: 编译后为: 因此PropTypes.element可以为以下类型:string | 组件实列(组件标签,例如上面的<M ...
分类:其他好文   时间:2019-10-16 23:37:34    阅读次数:173
【leetcode】1224. Maximum Equal Frequency
题目如下: Given an array nums of positive integers, return the longest possible length of an array prefix of nums, such that it is possible to remove exac ...
分类:其他好文   时间:2019-10-16 11:43:10    阅读次数:119
调整数组为不降的序列
题目 You are given an array of integers in an arbitrary order. Return whether or not it is possible to make the array non decreasing by modifying at mos ...
分类:编程语言   时间:2019-10-14 01:34:33    阅读次数:116
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