<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[nowfuture的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/nowfuture</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; nowfuture]]></copyright><item><title><![CDATA[vue3中使用矢量图]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/131517257</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/131517257</guid><author>nowfuture</author><pubDate>Mon, 03 Jul 2023 15:48:23 +0800</pubDate><description><![CDATA[【代码】vue3中使用矢量图。]]></description><category></category></item><item><title><![CDATA[vue3+el-form表单输入响应式失效问题]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/130933008</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/130933008</guid><author>nowfuture</author><pubDate>Mon, 29 May 2023 17:32:57 +0800</pubDate><description><![CDATA[中使用el-form时，如果el-form节点的ref属性和model属性同名，会导致输入框无法输入，选择框无法选择，代码如下。修改的办法是：修改成不同的名字就可以解决。]]></description><category></category></item><item><title><![CDATA[由于node版本较高引起的问题]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/125658251</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/125658251</guid><author>nowfuture</author><pubDate>Thu, 07 Jul 2022 14:33:39 +0800</pubDate><description><![CDATA[nvm管理node]]></description><category></category></item><item><title><![CDATA[学会复盘-d4]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/89917242</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/89917242</guid><author>nowfuture</author><pubDate>Tue, 07 May 2019 14:42:30 +0800</pubDate><description><![CDATA[java

1.子类的权限不能比父类更低


JAVA 子类重写继承的方法时,不可以降低方法的访问权限，子类继承父类的访问修饰符要比父类的更大，也就是更加开放，假如我父类是protected修饰的，其子类只能是protected或者public，绝对不能是friendly(默认的访问范围)或者private，当然使用private就不是继承了。还要注意的是，继承当中子类抛出的异常必须是父类抛出的异...]]></description><category></category></item><item><title><![CDATA[学会复盘-d3]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/89875777</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/89875777</guid><author>nowfuture</author><pubDate>Mon, 06 May 2019 21:37:23 +0800</pubDate><description><![CDATA[java

1.

环境变量可在编译source code时指定 

javac一次可同时编译数个Java源文件

javac.exe能指定编译结果要置于哪个目录（directory）


2.什么操作会使得当前线程停止。(a,b,e)


A：一个InterruptedException 异常被捕获 大家都知道的嘛（一般通过interrupt方法 中断线程） 如果抓到一个线程 都会关...]]></description><category></category></item><item><title><![CDATA[学会复盘-d2]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/89841978</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/89841978</guid><author>nowfuture</author><pubDate>Sun, 05 May 2019 21:48:06 +0800</pubDate><description><![CDATA[1.Java

1.做题

1.



2.

Java一个源程序只能有一个public类存在，且类名与文件名相同。Java程序是从main方法开始执行的，public为类加载器提供入口，然后找到public类中的main方法开始执行。如果存在多个public类，程序将不知道该从哪里执行。注意，内部类可以是public的，因为内部类是作为外部类的成员存在的。

3.

效率：StringStrin...]]></description><category></category></item><item><title><![CDATA[学会复盘-d1]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/89812746</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/89812746</guid><author>nowfuture</author><pubDate>Sat, 04 May 2019 17:12:42 +0800</pubDate><description><![CDATA[1.Java

1.做题

    

1.

     jar   将许多文件组合成一个jar文件

      javac 编译

      javadoc它从程序源代码中抽取类、方法、成员等注释形成一个和源代码配套的API帮助文档。

     javah把java代码声明的JNI方法转化成C\C++头文件。 ...]]></description><category></category></item><item><title><![CDATA[基数排序]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/89336233</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/89336233</guid><author>nowfuture</author><pubDate>Tue, 16 Apr 2019 16:29:28 +0800</pubDate><description><![CDATA[package demo4;

import java.util.Arrays;

public class RadixSort {

	public static void main(String[] args) {
		int[] arr = new int[] {23,6,189,45,9,287,56,1,798,34,65,652,5};
		radixSort(arr);
		Sys...]]></description><category></category></item><item><title><![CDATA[归并排序]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/89332088</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/89332088</guid><author>nowfuture</author><pubDate>Tue, 16 Apr 2019 14:02:32 +0800</pubDate><description><![CDATA[package demo4;

import java.util.Arrays;

public class MergeSort {

	public static void main(String[] args) {
		int[] arr = new int[] {1,3,5,2,4,6,8,10};
		System.out.println(Arrays.toString(arr));
	...]]></description><category></category></item><item><title><![CDATA[插入排序之希尔排序]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/89321092</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/89321092</guid><author>nowfuture</author><pubDate>Mon, 15 Apr 2019 21:16:24 +0800</pubDate><description><![CDATA[package demo4;

import java.util.Arrays;

public class ShellSort {

	public static void main(String[] args) {
		int[] arr = new int[] { 3, 5, 2, 7, 8, 1, 2, 0, 4, 7, 4, 3, 8 };
		System.out.println(A...]]></description><category></category></item><item><title><![CDATA[插入排序之直接插入排序]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/89316014</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/89316014</guid><author>nowfuture</author><pubDate>Mon, 15 Apr 2019 17:11:00 +0800</pubDate><description><![CDATA[package demo4;

import java.util.Arrays;

public class InsertSort {
   
   public static void main(String[] args) {
      int[] arr = new int[] {5,3,2,8,5,9,1,0};
      insertSort(arr);
      System....]]></description><category></category></item><item><title><![CDATA[交换排序之快速排序]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/89314625</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/89314625</guid><author>nowfuture</author><pubDate>Mon, 15 Apr 2019 16:28:56 +0800</pubDate><description><![CDATA[package demo4;

import java.util.Arrays;

public class QuickSort {

	public static void main(String[] args) {
		int[] arr = new int[] {3,4,6,7,2,7,2,8,0,9,1};
		quickSort(arr,0,arr.length-1);
		Syste...]]></description><category></category></item><item><title><![CDATA[交换排序之-冒泡排序]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/89314598</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/89314598</guid><author>nowfuture</author><pubDate>Mon, 15 Apr 2019 16:28:14 +0800</pubDate><description><![CDATA[package demo4;

import java.util.Arrays;

public class BubbleSort {

    public static void main(String[] args){
        int[] arr = new int[]{5,7,2,9,4,1,0,5,7};
        System.out.println(Arrays.to...]]></description><category></category></item><item><title><![CDATA[mysql学习--项目汇总]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/88226745</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/88226745</guid><author>nowfuture</author><pubDate>Wed, 06 Mar 2019 11:48:10 +0800</pubDate><description><![CDATA[项目十 行程和用户

题目意思本身很简单，难点在于如何同时计算取消的数量和总数量。 总数量很简单，就是COUNT(*)， 同时计算取消数量可以用SUM(CASE END)来实现。对status列计算数量，如果是cancel就记1，complete记为0. P.S. 如果需要userID 匹配 clientID和driverID两列，需要写两个Lef Join。 但是可以通过CASE ...END ...]]></description><category></category></item><item><title><![CDATA[mysql学习--day06]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/88116385</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/88116385</guid><author>nowfuture</author><pubDate>Mon, 04 Mar 2019 15:08:33 +0800</pubDate><description><![CDATA[项目十：行程和用户（难度：困难）

Trips 表中存所有出租车的行程信息。每段行程有唯一键 Id，Client_Id 和 Driver_Id 是 Users 表中 Users_Id 的外键。Status 是枚举类型，枚举成员为 (‘completed’, ‘cancelled_by_driver’, ‘cancelled_by_client’)。

Users 表存所有用户。每个用户有唯一键 U...]]></description><category></category></item><item><title><![CDATA[mysql学习----day05]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/88085531</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/88085531</guid><author>nowfuture</author><pubDate>Sun, 03 Mar 2019 16:35:44 +0800</pubDate><description><![CDATA[1.数据导入导出

1.1将Excel文件导入MySQL表

首先将需要导入的excel表打开，然后点击导入向导













然后按照步骤进行下去就行了。

结果如下：



参考：

https://www.cnblogs.com/lixuwu/p/6669430.html

1.2 MySQL导出表到Excel文件



然后右键点击“导出向导”，选择文件类型：


...]]></description><category></category></item><item><title><![CDATA[MySQL 基础 （三）- 表联结--day04]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/88076525</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/88076525</guid><author>nowfuture</author><pubDate>Sat, 02 Mar 2019 17:07:33 +0800</pubDate><description><![CDATA[1.MySQL别名

1.1 列别名

将查询或者筛选出来列用关键字AS 命名


SELECT 字段名 [AS] 别名 [，字段名 [AS] 别名，……] FROM 表名；

1.2表别名

给表起一个别名，为了在查询数据时，使用起来方便，也使用关键字AS


SELECT * FROM 表名 [AS] 别名；

2.表联结

2.1 INNER JOIN（内联结）

如果表中有至少一...]]></description><category></category></item><item><title><![CDATA[MySQL 基础 （二）- 表操作----day03]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/88049696</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/88049696</guid><author>nowfuture</author><pubDate>Fri, 01 Mar 2019 15:45:59 +0800</pubDate><description><![CDATA[1. MySQL表数据类型

MySQL支持多种类型，大致可以分为三类：数值、日期/时间和字符串(字符)类型。

1.1 数值数据类型

1.1.1 整数类型

类型
			大小
			范围（有符号）
			范围（无符号）
			用途
		TINYINT
			1 字节
			(-128，127)
			(0，255)
			小整数值
		SMALLINT
			2 字节
			(-32 768，...]]></description><category></category></item><item><title><![CDATA[mysql学习-day02]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/88018826</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/88018826</guid><author>nowfuture</author><pubDate>Thu, 28 Feb 2019 11:14:54 +0800</pubDate><description><![CDATA[http://note.youdao.com/noteshare?id=853a94566cc7053ab319b9946ca36f3f&amp;amp;sub=590F0F79619F471D99C0F518A4DFBDF6]]></description><category></category></item><item><title><![CDATA[mysql数据库学习-day01]]></title><link>https://blog.youkuaiyun.com/nowfuture/article/details/87929206</link><guid>https://blog.youkuaiyun.com/nowfuture/article/details/87929206</guid><author>nowfuture</author><pubDate>Tue, 26 Feb 2019 16:28:50 +0800</pubDate><description><![CDATA[1.数据库的安装

step1:从mysql官网下载安装包



然后解压文件，我是为了防止有其他问题出现，解压到了c盘。

step2:找到mysql的安装目录（我的是c:\mysql），在当前文件夹下创建配置文件my.ini，内容如下：


[mysql]
# 设置mysql客户端默认字符集
default-character-set=utf8
 
[mysqld]
# 设置3306端口
po...]]></description><category></category></item></channel></rss>