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iOS中数组的倒序、升序、降序
1 NSMutableArray *array = [NSMutableArray arrayWithObjects:@"5",@"3",@"4",@"2",nil]; 2 3 // 倒序 4 5 NSMutableArray *resultArr = (NSMutableArray *)[[arr... ...
分类:移动开发   时间:2019-11-19 17:30:17    阅读次数:93
Reference与ReferenceQueue
Reference源码分析 首先我们先看一下Reference类的注释: /** * Abstract base class for reference objects. This class defines the * operations common to all reference obje ...
分类:其他好文   时间:2019-11-19 15:45:59    阅读次数:73
LightOJ - 1067 - Combinations(组合数)
链接: https://vjudge.net/problem/LightOJ 1067 题意: Given n different objects, you want to take k of them. How many ways to can do it? For example, say th ...
分类:其他好文   时间:2019-11-19 01:05:38    阅读次数:62
類型安全很重要
package test; import java.util.HashMap; import java.util.Map; import java.util.Objects; public class Test implements Favorite { private Map<Class<?>, ...
分类:其他好文   时间:2019-11-18 20:34:01    阅读次数:80
Python Dictionaries Basics
Python Dictionaries Python Dictionaries are unordered collections of arbitrary objects built in mutable mapping that maps keys to values in dictionari ...
分类:编程语言   时间:2019-11-18 20:08:42    阅读次数:81
ES6深入浅出-13 Proxy 与 Reflect-2.Proxy 代理
阮一峰http://es6.ruanyifeng.com/#docs/proxy MDN https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Proxy 无限代理Tree http://ww ...
分类:其他好文   时间:2019-11-16 17:39:15    阅读次数:70
instance-segmentation-security-0050
Use case and High-level description This model is an instance segmentation network for 80 classes of objects. It is a Mask R-CNN with ResNet50 backbon ...
分类:其他好文   时间:2019-11-16 00:33:58    阅读次数:58
ES6深入浅出-13 Proxy 与 Reflect-1.Reflect 反射
阮一峰 http://es6.ruanyifeng.com/#docs/reflect MDN有一些简陋的介绍 https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Reflect 不推荐直接 ...
分类:其他好文   时间:2019-11-15 14:19:53    阅读次数:81
【oracle】处理锁表
查询锁表 select object_name,machine,s.sid,s.serial# from v$locked_object l,dba_objects o ,v$session swhere l.object_id = o.object_id and l.session_id=s.si ...
分类:数据库   时间:2019-11-13 01:04:45    阅读次数:111
vue双向绑定原理(简单实现原理附demo)
先上效果图 简单的实现数据的双向绑定首先来了解一个东西:Object.defineProperty() https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProp ...
分类:其他好文   时间:2019-11-12 09:13:07    阅读次数:69
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