折线图有多条线, 如何让其中跟随在左轴, 其中一些跟随右轴?

实现带缺口的圆环 "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20250110/322b2f19dad800671b8da5c2fde4eff2.png)

如下图所示，图例的文本被省略了，我想要给他们添加提示信息，显示完整的文本，请问要如何操作？ "图片" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20250108/941b807184fb31e106a21d63ace8ff30.png)

原因是因为它是 ECMAScript 2020 (ES2020) 中的一个新特性 Vue 2 的模板解析引擎并不支持这个语法, 可以用"Babel"进行编译

"vertical-align: top" 也行 本质来讲就是行内对齐，一个块和空格就是这几像素 变成 block，修改 font-size ，或者 flex 挺多办法都能解决

"Image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20250106/a20b3f52bfed3e7e877f586153397922.png) 如图，如何给el-tab的el-tab-pane的label添加未读消息红点或者是未读消息的数量。

entry_in表里面的workID字段是这样的“JP20230801”，在work表里面的workID是20230801， 看了下thinkphp6的手册，发现join方法不支持闭包查询。 这样的话，使用join的时候，怎么把JP去掉？ $res->leftJoin('work', 'work.workID = REPLACE(entry_in.workID, "JP", "entry_in.workID")')->where('work.customer_id',$customer_id); 这样会报错

解决方案 Solution 不同图表库的解决方案不一样，根据你给的demo，在VChart中只需要开启轴采样就可以避免坐标轴文字遮挡的问题。 * "sampling" 是否开启轴数据采样，默认开启。轴采样开启之后，会对轴数据进行采样显示，防止轴数据的重叠。 如果你还想自定义轴标签之间的间距，通过配置 "label.minGap" 可以控制轴标签之间的间距。 * 通过"minGap"可以自定义标签之间的最小间距（单位为像素）。仅当轴采样开始时生效（"sampling: true"）。 该配置会影响轴采样的结果。 "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20250101/da669f92e505d6fc46acb351b713599e.png) 代码示例 Code Example 代码参考 Code Example const spec = { type: 'area', data: { values: [ { month: '1980-05', vacancies: 36.7 }, { month: '1980-08', vacancies: 37.5 }, { month: '1980-11', vacancies: 38.7 }, { month: '1981-02', vacancies: 37.4 }, { month: '1981-05', vacancies: 44 }, { month: '1981-08', vacancies: 44.5 }, { month: '1981-11', vacancies: 41.7 }, { month: '1982-02', vacancies: 37.3 }, { month: '1982-05', vacancies: 30.3 }, { month: '1982-08', vacancies: 26.8 }, { month: '1982-11', vacancies: 30.3 }, { month: '1983-02', vacancies: 29.7 }, { month: '1983-05', vacancies: 32.4 }, { month: '1983-08', vacancies: 33.6 }, { month: '1983-11', vacancies: 36.3 }, { month: '1984-02', vacancies: 44.6 }, { month: '1984-05', vacancies: 40.3 }, { month: '1984-08', vacancies: 48.5 }, { month: '1984-11', vacancies: 49.8 }, { month: '1985-02', vacancies: 60.4 }, { month: '1985-05', vacancies: 68.6 }, { month: '1985-08', vacancies: 67.2 }, { month: '1985-11', vacancies: 66.2 }, { month: '1986-02', vacancies: 64.8 }, { month: '1986-05', vacancies: 66.1 }, { month: '1986-08', vacancies: 61.1 }, { month: '1986-11', vacancies: 66.3 }, { month: '1987-02', vacancies: 69.5 }, { month: '1987-05', vacancies: 66.9 }, { month: '1987-08', vacancies: 70.1 }, { month: '1987-11', vacancies: 66.9 }, { month: '1988-02', vacancies: 70.2 }, { month: '1988-05', vacancies: 74.4 }, { month: '1988-08', vacancies: 80.8 }, { month: '1988-11', vacancies: 85.1 }, { month: '1989-02', vacancies: 84.7 }, { month: '1989-05', vacancies: 93.7 }, { month: '1989-08', vacancies: 76.6 }, { month: '1989-11', vacancies: 79.2 }, { month: '1990-02', vacancies: 71.9 }, { month: '1990-05', vacancies: 64 }, { month: '1990-08', vacancies: 56.7 }, { month: '1990-11', vacancies: 41.6 }, { month: '1991-02', vacancies: 33.8 }, { month: '1991-05', vacancies: 31.6 }, { month: '1991-08', vacancies: 29.8 }, { month: '1991-11', vacancies: 30.9 }, { month: '1992-02', vacancies: 33.3 }, { month: '1992-05', vacancies: 31.9 }, { month: '1992-08', vacancies: 33 }, { month: '1992-11', vacancies: 36.9 }, { month: '1993-02', vacancies: 37 }, { month: '1993-05', vacancies: 42 }, { month: '1993-08', vacancies: 46.2 }, { month: '1993-11', vacancies: 48.5 }, { month: '1994-02', vacancies: 57.6 }, { month: '1994-05', vacancies: 69.5 }, { month: '1994-08', vacancies: 82.2 }, { month: '1994-11', vacancies: 85.6 }, { month: '1995-02', vacancies: 72.7 }, { month: '1995-05', vacancies: 77.3 }, { month: '1995-08', vacancies: 74.6 }, { month: '1995-11', vacancies: 72.5 }, { month: '1996-02', vacancies: 81 }, { month: '1996-05', vacancies: 76.7 }, { month: '1996-08', vacancies: 77.5 }, { month: '1996-11', vacancies: 82.5 }, { month: '1997-02', vacancies: 81.3 }, { month: '1997-05', vacancies: 82.8 }, { month: '1997-08', vacancies: 84.9 }, { month: '1997-11', vacancies: 90.4 }, { month: '1998-02', vacancies: 98.3 }, { month: '1998-05', vacancies: 104 }, { month: '1998-08', vacancies: 89.8 }, { month: '1998-11', vacancies: 102 }, { month: '1999-02', vacancies: 87.2 }, { month: '1999-05', vacancies: 100.2 }, { month: '1999-08', vacancies: 106.9 }, { month: '1999-11', vacancies: 109.6 }, { month: '2000-02', vacancies: 118.1 }, { month: '2000-05', vacancies: 115.9 }, { month: '2000-08', vacancies: 114.4 }, { month: '2000-11', vacancies: 114.8 }, { month: '2001-02', vacancies: 99.7 }, { month: '2001-05', vacancies: 94 }, { month: '2001-08', vacancies: 90.2 }, { month: '2001-11', vacancies: 88.5 }, { month: '2002-02', vacancies: 90.5 }, { month: '2002-05', vacancies: 96.2 }, { month: '2002-08', vacancies: 103 }, { month: '2002-11', vacancies: 97.6 }, { month: '2003-02', vacancies: 109.7 }, { month: '2003-05', vacancies: 104.6 }, { month: '2003-08', vacancies: 104.1 }, { month: '2003-11', vacancies: 107.5 }, { month: '2004-02', vacancies: 103.8 }, { month: '2004-05', vacancies: 127.1 }, { month: '2004-08', vacancies: 124.6 }, { month: '2004-11', vacancies: 139.2 }, { month: '2005-02', vacancies: 146.2 }, { month: '2005-05', vacancies: 140.9 }, { month: '2005-08', vacancies: 139 }, { month: '2005-11', vacancies: 134.1 }, { month: '2006-02', vacancies: 144.3 }, { month: '2006-05', vacancies: 154.1 }, { month: '2006-08', vacancies: 154.9 }, { month: '2006-11', vacancies: 162.1 }, { month: '2007-02', vacancies: 160.8 }, { month: '2007-05', vacancies: 168.6 }, { month: '2007-08', vacancies: 173.3 }, { month: '2007-11', vacancies: 183.3 }, { month: '2008-02', vacancies: 178.2 }, { month: '2008-05', vacancies: 184.5 }, { month: '2008-08', vacancies: null }, { month: '2008-11', vacancies: null }, { month: '2009-02', vacancies: null }, { month: '2009-05', vacancies: null }, { month: '2009-08', vacancies: null }, { month: '2009-11', vacancies: 148.9 }, { month: '2010-02', vacancies: 168.4 }, { month: '2010-05', vacancies: 170.3 }, { month: '2010-08', vacancies: 178.6 }, { month: '2010-11', vacancies: 191.1 }, { month: '2011-02', vacancies: 189.4 }, { month: '2011-05', vacancies: 187.3 }, { month: '2011-08', vacancies: 183.4 }, { month: '2011-11', vacancies: 179.3 }, { month: '2012-02', vacancies: 181.8 }, { month: '2012-05', vacancies: 178.1 }, { month: '2012-08', vacancies: 175.3 }, { month: '2012-11', vacancies: 164.8 }, { month: '2013-02', vacancies: 149.8 }, { month: '2013-05', vacancies: 143.5 }, { month: '2013-08', vacancies: 140.6 }, { month: '2013-11', vacancies: 138.9 }, { month: '2014-02', vacancies: 143.2 }, { month: '2014-05', vacancies: 147.4 }, { month: '2014-08', vacancies: 146.6 }, { month: '2014-11', vacancies: 149.7 }, { month: '2015-02', vacancies: 151.9 }, { month: '2015-05', vacancies: 157.7 }, { month: '2015-08', vacancies: 161.7 }, { month: '2015-11', vacancies: 167.4 }, { month: '2016-02', vacancies: 172.2 }, { month: '2016-05', vacancies: 171.1 }, { month: '2016-08', vacancies: 177.5 }, { month: '2016-11', vacancies: 182.3 }, { month: '2017-02', vacancies: 185 }, { month: '2017-05', vacancies: 185.6 }, { month: '2017-08', vacancies: 200.9 }, { month: '2017-11', vacancies: 204.4 }, { month: '2018-02', vacancies: 212.8 }, { month: '2018-05', vacancies: 223.8 }, { month: '2018-08', vacancies: 228.7 }, { month: '2018-11', vacancies: 230.2 }, { month: '2019-02', vacancies: 232.4 }, { month: '2019-05', vacancies: 228.1 }, { month: '2019-08', vacancies: 224.3 }, { month: '2019-11', vacancies: 226.7 }, { month: '2020-02', vacancies: 227.4 }, { month: '2020-05', vacancies: 129.2 }, { month: '2020-08', vacancies: 206.3 }, { month: '2020-11', vacancies: 254.1 }, { month: '2021-02', vacancies: 288 }, { month: '2021-05', vacancies: 370.2 }, { month: '2021-08', vacancies: 333.9 }, { month: '2021-11', vacancies: 397.2 }, { month: '2022-02', vacancies: 421.9 }, { month: '2022-05', vacancies: 480.1 } ] }, xField: 'month', yField: 'vacancies', invalidType: 'break', point: { visible: false }, title: { text: 'Job vacancies, seasonally adjusted', subtext: 'Source: Australian Bureau of Statistics, 30 June 2022' }, axes: [ { orient: 'left', title: { visible: true, text: 'thousands' } }, { orient: 'bottom', sampling: true, label:{ minGap: 100 } } ] }; 结果展示 Results 在线效果参考："https://codesandbox.io/s/scales-at-several-points-on-the-x-ax..." (https://link.segmentfault.com/?enc=5fMyZkCagjObv%2B%2FAXhaNqw%3D%3D.4E6Nb0ZS8US48AnHKLu0kHaD9ghTWY8uiwdStFP4bCKeScSDa3VlsPD4KpbmalkCE9UZNWezHxV5QMl3ZSnBVRdyVYn3Vuf3wGv%2FmhGSwko%3D) Online demo："https://codesandbox.io/s/scales-at-several-points-on-the-x-ax..." (https://link.segmentfault.com/?enc=Pjf7qdtk6vsfjDI%2BuTw44g%3D%3D.14Lxjzbwv849SmZsOG9XPWNTRqTJnQhL423HfjcGyaHDdcWqaTGi2kA73xkrgWs6kswFmzvmwMKeXr3ukBVl9Vr9mrcSyJNtBFgIQ6gigpw%3D) "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20250101/ca4bc583c2d994141da2ffee402c019a.png) 相关文档 Related Documentation 存在空值的面积图demo："https://www.visactor.io/vchart/demo/area-chart/null-value-area" (https://link.segmentfault.com/?enc=o9xfKal6eWDCT9%2FQll2GIg%3D%3D.Z5CmmE70Oqe31E5JYi3P0Erhm8NZREdOC0Q5%2FlO4aFXeK%2BHyGqyysreEumkrulsHrTUtyeNlPrAXhJvkxHBlyA%3D%3D) 面积图教程："https://www.visactor.io/vchart/guide/tutorial_docs/Chart_Type..." (https://link.segmentfault.com/?enc=KiVA%2B2LVDkcR0RkMGpt4Ww%3D%3D.dchj%2BFT3ip4TCBPKSQ7MEuQg4uD7SZSmKMOAaKH6fsgzOowiyxnn4%2FFL6IO5N0AhNbJt3JEDVKKRuTdxJMd%2FDmWwliYLXTTtCyRqg9sz8aY%3D) 相关api："https://www.visactor.io/vchart/option/areaChart#axes-band.sam..." (https://link.segmentfault.com/?enc=0mukMx1GiYxzC%2BemFhq8Gw%3D%3D.vfMke5RyvZRaheOCXUAJVsfzVO6zIIQRypzQi4ckXs7jFsC3l33T75L%2Bb7ApumZyQuvD1XRidBPvFCKY7J1d0M6TbvPDrrU0jphes%2Fm8bQ4%3D) github："https://github.com/VisActor/VChart" (https://link.segmentfault.com/?enc=3HHDdgUTVPaOFveP7qul5g%3D%3D.sG3Xr7BvvEzVj3DQ%2BKMN7jXP9GAQeLiRZQw8yc4%2BBfWewFkN%2FN1niBvjUTmMR33%2B)

Oracle存储过程代码如下： create procedure test_procedure( id_in in number, del_num out number ) as begin select count(*) into del_num from test t where t.id = id_in ; delete from test t where t.id = id_in ; commit; end; / python调用代码如下： from sqlalchemy import create_engine , text from sqlalchemy.orm import sessionmaker from configs import url # 创建数据库连接 engine = create_engine(url) # 创建会话 Session = sessionmaker(bind=engine) session = Session() # 调用存储过程 result = session.execute(text("CALL test_procedure(:param1, @out_param)"), {'param1': 3}) # 获取输出参数的值 out_param_value = session.execute("SELECT @out_param").scalar() # 打印输出参数的值 print(out_param_value) 执行python报错信息： DatabaseError: (cx_Oracle.DatabaseError) ORA-00936: missing expression 咨询了GPT给了如下的代码： from sqlalchemy import create_engine from sqlalchemy.orm import sessionmaker from sqlalchemy import outparam from configs import url # 创建数据库连接 engine = create_engine(url) # 创建会话 Session = sessionmaker(bind=engine) session = Session() # 调用存储过程 result = session.execute("BEGIN test_procedure(:alarmid, :del_num); END;", {'alarmid': 123, 'del_num': outparam.Parameter(int)}) # 获取输出参数的值 out_param_value = result.fetchone()['del_num'] # 打印输出参数的值 print(out_param_value) 结果报错： AttributeError: 'function' object has no attribute 'Parameter' 所以究竟怎么才能通过SQLAlchmey调用存储过程正常获取出参呢？

前端代理和后端配置跨域只是两种解决不同阶段跨域问题的方法。你在开发阶段，用前端代理方便又快速。在生产环境，后端配置跨域是更稳定和更安全的方法。不冲突，阶段不同而已，意义就再开发阶段方便

1. 是侵权 2. 会不会被告不好说 3. 有很多免费图片可以用，比如 unsplash.com

如图, 我就配置了一个请求 = 线程数 * 循环次数 "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241218/4711715a55812d9f5834c173f5a58d5f.png) 但是, 如下图, 我用命令行执行时, 已经发了一千多个请求了还没有结束, 这个一般是什么问题呢? "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241218/40d5767eac72f01284a9f56e81c6c24c.png) 真实问题, 请不要用 ai 回答

如下图： "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241217/b3c11f9fac2b91459575105e52126d10.png)

yarn 3.x 上现在已经没有 list 这个子命令了。 在 1.x 版本上是有 list 这个命令的。

"002808v7huuiojei7hvz6f.jpg" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241208/7d9f291321839c0fcb88618b9ef26077.png) 如上图，实际是由多个斑马线的圆圈组成，我只想问下有没有办法实现倾斜的斑马线间隔圆环？

控制一下更新频率： "parent.slidervalue": { handler: _.throttle(function(newVal, oldVal) { try { let getchart = echarts.getInstanceByDom( document.getElementById("charts" + this.index) ); if (this.parent.isPause && getchart && this.signalName.length !== 0) { const findIndex = this.findIndexDep( this.parent.eventData[0].value, String(newVal) ); const xValue = this.dateTimes[findIndex]; let newOption = _.chain(this.defOption) .set("xAxis[0].axisPointer.value", xValue) .value(); getchart.setOption(newOption); this.sendvalue(newVal, this.parent.eventData[0].value); } } catch (error) { console.error("Error in handler: ", error); } }, 100), }

需要使用插件自己的数据类型 "PayloadAction" import { createSlice, PayloadAction } from '@reduxjs/toolkit' const ErrorSlice = createSlice({ name: 'error', initialState: "", reducers: { Publish: (_, action: PayloadAction) => action.payload, Consume: () => "", } }) * 参考："https://redux.js.org/usage/usage-with-typescript#standard-red..." (https://link.segmentfault.com/?enc=E705%2B7lE3FA32gpvHllBpA%3D%3D.TAScsfEOEmRoqEpaEvLtDUbfj6FNgjFHgWm3UusvMjQXoQU8K%2ByI8pWxtK7tMWdvytb5QdysxB8V04vLPJzey1A8pXbxuSQaM71jvtDIL7iwLxuwM3BYRRQS58Ie6GlEBMckB38XMrdoOyHLUf4NIQ%3D%3D)

需求是再页面内打开一个弹窗然后显示外部页面。 但是外部页面都是http 无法使用

在4.4.2版本以上 似乎会出现这个问题 你可以尝试这样定义 type Person={ name:string age?:number gender?:boolean [K:string]:any }

写的不太好，欢迎高手指点 select c.colno,c.colname,sc.idxname FROM syscolumns c join SYSCONSTRAINTS sc on sc.tabid = c.tabid join ( select idxname,part1 as colno from SYSINDEXES si where tabid=107 and part1 >0 union all select idxname,part2 as colno from SYSINDEXES si where tabid=107 and part2 >0 union all select idxname,part3 as colno from SYSINDEXES si where tabid=107 and part3 >0 union all select idxname,part4 as colno from SYSINDEXES si where tabid=107 and part4 >0 union all select idxname,part5 as colno from SYSINDEXES si where tabid=107 and part5 >0 union all select idxname,part6 as colno from SYSINDEXES si where tabid=107 and part6 >0 union all select idxname,part7 as colno from SYSINDEXES si where tabid=107 and part7 >0 union all select idxname,part8 as colno from SYSINDEXES si where tabid=107 and part8 >0 union all select idxname,part9 as colno from SYSINDEXES si where tabid=107 and part9 >0 union all select idxname,part10 as colno from SYSINDEXES si where tabid=107 and part10 >0 union all select idxname,part11 as colno from SYSINDEXES si where tabid=107 and part11 >0 union all select idxname,part12 as colno from SYSINDEXES si where tabid=107 and part12 >0 ) as t on t.colno = c.colno and t.idxname =sc.idxname where c.tabid=107 and sc.constrtype = 'P'

你把小程序理解为微信内置的浏览器就行了。 最小化之后就停止小程序 JS 线程的执行了，更不要说作为依托环境的微信都退出了。 "小程序运行时 / 运行机制" (https://link.segmentfault.com/?enc=oYEEZR%2F3ELqMDhwlQYB6lw%3D%3D.nywf2RK0w5EAuDWqJL2tzAMejUx88MlNxIY0yq5abHUFMmT9obGKGaCjT5EzZq9aud22pNZY6%2BT19%2F3yjFRhIQD4WRXAzGeV3yMKj9n90Zd5M2mgfzNlOPiHKRYLudB8) "图片.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241130/1db9777b76c9b05992af4c23ea260926.png)

场景：在使用nuxtjs 服务器渲染的时候接口数据都是"asyncData"进行请求的，之前用户在页面输入了一些数据等，前端这边都是缓存到"localStorage" 页面刷新的时候还可以拿到，现在的问题：页面刷新的时候客户端操作的数据如何实现服务器数据共享呢？ 有什么好的思路吗？我想到过用cookie？但是太小了不能满足我的需求

阁下是在说这种用法吗。 // createApp(App).mount('#app') render(createVNode(App), document.querySelector('#app')) 要说好不好使，肯定是好使的（至少CSR是OK的）。但是区别也是明显的，render没有返回值，不像createApp可以返回一个app实例，可以做一些全局的配置，可以做一些组件的注册。 官方文档到底有没有render的描述呢，这里"https://vuejs.org/api/custom-renderer.html#createrenderer" (https://link.segmentfault.com/?enc=IIlBOcCgCUuX2jKcZduB1Q%3D%3D.m0G9fjUayfSHXc6XrGOFiJtAh7dpf%2BfJqUOF7%2FGJHFDq7i6Uj7t%2BQBkhg0Z2GrbgIhcXq9ppA702cAE1iu0dEA%3D%3D)可能也算是有吧。 那么你都看到这个函数了，想必也是看过源码了： "https://github.com/vuejs/core/blob/main/packages/runtime-core/src/renderer.ts#L2355C7-L2355C7" (https://link.segmentfault.com/?enc=fWSOy9Jm9hDRikKp%2BLnbXQ%3D%3D.74Oqj7wp6o3tqPoV5RNsnAVbErd4PCtJf9Q57xX8GNfIa9pfMQZN0aR5upHRzKMoiCkebnOqT7%2BEE59hFpzie4xGvKff3hcM5ydDbRJ6VXsDVZUSy%2FTPZ6l7dt5muOVx) "https://github.com/vuejs/core/blob/main/packages/runtime-core/src/apiCreateApp.ts#L348C48-L348C48" (https://link.segmentfault.com/?enc=hZ9I7DPg2g1quNjD8zPc2g%3D%3D.wsestICuq%2F0qxsFsQQK1aQYQ%2FIC5ATyrf2ZCjgZLozoY1KRDc8QksJate9%2FRdDTp%2FId%2BSMRJ0UmXNHnDYo0dW9G3VkAgF5cErI3L7%2B5FjXsg6iliFBlYiYdgmXpbycpyFyQsd8sJKUJUCnPIdaevZg%3D%3D) render和createApp的关系，备注里有说render是low-level api。 如果使用只是考虑语义，根应用怎么说createApp中的App也更有语义。如果考虑SSR，可能还不能单纯的用render。 所以现在还会纠结吗

我有一个装了Ubuntu系统的服务器带有两个网口eth0和eth1。eth0的IP是192.168.2.178/24, eth1的IP是192.168.2.179。 通过netplan配置网络，内容如下： network: ethernets: eth0: addresses: - 192.168.2.178/24 dhcp4: false gateway4: 192.168.2.1 nameservers: addresses: - 192.168.2.1 optional: true eth1: addresses: - 192.168.2.179/24 dhcp4: false optional: true renderer: networkd version: 2 当我完成这个网络配置后，系统的路由表中会自动添加两条路由，如下所示： Destination | Gateway | Genmask | Flags | Metric | Ref | Use | Iface ---|---|---|---|---|---|---|--- 192.168.2.0 | 0.0.0.0 | 255.255.255.0 | U | 0 | 0 | 0 | eth0 192.168.2.0 | 0.0.0.0 | 255.255.255.0 | U | 0 | 0 | 0 | eth1 在服务器上访问192.168.2.0/24这个内网段其他IP时会发生冲突。 我希望服务器在访问192.168.2.100的时候通过eth1网口，访问其他IP的时候通过eth0网口。 "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241121/3a25c7b8972d272a030f4332d66b0de0.png) 我应该怎么在系统中进行路由相关的配置，或者在netplan中配置能够永久生效。 我试过手动进行如下配置能够达到效果。 $ route del -net 192.168.2.0 netmask 255.255.255.0 dev eth1 $ route add -host 192.168.2.100 dev eth1 但是当Ubuntu重启的时候或者插拔服务器的网线时，路由表就会被重置，上面手动配置的路由就会消失。

"printValues" 期望后面是一堆 "int" ，但是传给它的是一个 "va_list" 。"va_list" 不是 "int"，当然就不对了。 如果想想现在这样调用，那么 "printValues" 的参数就应该是 "va_list args" ，而不是 "..." 。 "printValues(int count, va_list args)" *** C 的 printf 就有 v 系列函数，比如： "int vprintf(const char *format, va_list arg);" 就是用 "va_list" 作为参数。

推荐两个吧 1. React Flow "https://reactflow.dev/" (https://link.segmentfault.com/?enc=%2BtalZ9PEYrC%2BUwDJaI1Z3A%3D%3D.c0IejTqbE9hE0MMxljwYHpWzdNFxZuj8SAbJGhjQUGw%3D) "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241109/a82bafa294db2e97704ab0a7a8a96868.png) 2. butterfly "https://github.com/alibaba/butterfly" (https://link.segmentfault.com/?enc=d%2FO6PxdAl2GavxUteOVfGg%3D%3D.9sbuhNGXH9xjBCw2h72qX3mUwRi0rjEra%2BpfUnU6CpGNqzwz0KN5sb%2Fjj9rP7HkE) "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241109/148c4d8672ed14d2f344f03d9f6579f4.png)

粗略的看了一下代码,使用了反射, 在go中反射是非常消耗性能与相对于而言会比较慢的, 第一个原因是用于反射的reflect.Type信息需要动态生成。当我们使用Golang反射机制时，编译器需要动态生成一些辅助结构体来保存调用时的上下文信息。这些结构体中的字段数量与复杂度都取决于反射的使用情况。因此，如果我们在编写代码时经常使用反射，那么编译器将需要频繁地动态生成这些结构体，这会导致编译时间的增加和程序执行速度的降低。 第二个原因是反射使用了接口。在Golang中，所有类型（包括基础类型和结构体）都是通过接口实现的。在反射时，我们需要将类型和值转换为对应的接口类型。这种转换需要额外的时间和空间开销，而且机器码也需要额外的指令来完成类型转换。 在go中会尽量避免使用反射来实现某些功能,当然如果开发性价比不错,用反射也没问题 package main import ( "encoding/json" "fmt" ) type MyStruct struct { First string `json:"first"` Last string `json:"last"` Age int `json:"age"` Nets []string `json:"nets"` Submap Submap `json:"submap"` } type Submap struct { Subfirst string `json:"subfirst"` Sublast []string `json:"sublast"` Subsub Subsub `json:"subsub"` } type Subsub struct { Subsub []string `json:"subsub"` } func main() { jsonData := ` { "first": "Dale", "last": "Murphy", "age": 44, "nets": ["ig", "fb", "value1", "value2"], "submap": { "subfirst": "Dale", "sublast": ["Murphy", "value3", "value4"], "subsub":{"subsub":["value5","value6","value7","value8","value9"]} } }` var data MyStruct err := json.Unmarshal([]byte(jsonData), &data) if err != nil { fmt.Println("Error:", err) return } // Accessing the flattened structure fmt.Println("First:", data.First) fmt.Println("Last:", data.Last) fmt.Println("Age:", data.Age) fmt.Println("Nets:", data.Nets) fmt.Println("Subfirst:", data.Submap.Subfirst) fmt.Println("Sublast:", data.Submap.Sublast) fmt.Println("Subsub:", data.Submap.Subsub.Subsub) }

代码： tableData初始化值为空数组 加载中 "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241105/c144c3a0079d1380b43d4c86e56ebaab.png) 问题详情： 因为el-table中的tableData初始化值是固定的，希望打开表格时，立马出现暂无数据，而不是长时间数据加载中之后再出现暂无数据。

这是一个由脚手架创建的react项目，我想给项目配置别名 于是我"npm run eject"暴露配置，然后进行了配置，但是好像不管用，有人知道是为什么吗？ 这是原来就定义好的路径 "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241103/542689104a922ce87a337227a33276f6.png) 接着在配置中使用 "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241103/ab4f3a2489cec1c9c8b65a7ceba195e5.png) 但是不管用 "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241103/ace84b3082d51bac1f702829ec995903.png) 没有配置tsconfig时的报错内容 这是报错内容 "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241103/f9800a8e05a589dce6cdaa2754b44477.png) 这是TS配置 "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241103/f5ba3c89f21fdbade118f06d46abc30f.png) 配置了tsconfig和eslint之后的报错内容 后面我查了下配置方法，安装了eslint-plugin-import eslint-import-resolver-alias后进行了配置： tsconfig.json "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241103/18d709e753b253674dd8d9c10f3b53d8.png) .eslintrc.json "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241103/dfee3970a162caa117c811419add6774.png) 但是还是报错了 "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241103/6ed55c0354143c7a1e66bf2cd3a0ed48.png)

rustup-gnu rustup-msvc rustup 有什么区别,应该下载哪个? windows 下scoop 安装rust 环境应该选择什么

getCurrentInstance 只有组件在 setup 运行阶段才会填充组件实例。

由于信息没给全，是目录名大写导致的，databinding不支持"activity/viewmodel" 所在目录名大写，只能小写。

@keyframes rotate360 { 0% { --rotate-angle: 0deg; } 100% { --rotate-angle: 360deg; } } 我希望 "--rotate-angle"的值是随百分比进度增加； 除了"0%{}..1%..2%...100%{}" 这样，能简写吗？

当然可以只用JS, vite在创建项目的时候选择JS就行了: "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241031/a63281323e2cb26d509f9d39896e383d.png) 完成后就可以安装elementplus, 使用方法与elementUI基本一样, 只是有些属性要注意一下看下文档 详细教程: «"https://blog.csdn.net/weixin_42645490/article/details/132981927" (https://link.segmentfault.com/?enc=lE7J7HLaCM4qm%2B1QvqZsrw%3D%3D.MnGIaLW19vS94XPjSYywwQCO1S2yb6zhAcQEetlb5epjeW2cu7XrciVSMGzJbuSCbsyy1zuGWSzTEbuigvQiuA%3D%3D)»

"image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241024/4a78fbf7a49f74211d20b222382fd240.png) 怎么样在微信小程序地图上手动画线、面？ 微信小程序提供的API貌似只支持线、面的回显展示，不能够手动在地图上画线、面 期望结果： "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241024/a28660ec79a385dd4823e88951eae550.png) "image.png" (https://wmlx-new-image.oss-cn-shanghai.aliyuncs.com/images/20241024/53d87becab0c02f97f3c127f5decee4a.png)

https://wmprod.oss-cn-shanghai.aliyuncs.com/c/user/20241016/9caf1196d21114e93c446084f8fc6f57.png 随便截图试了一下，大概效果是这样 "CleanShot 2024-01-04 at 15.53.21@2x.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/c/user/20241016/bf2d9f384967bdf16888b5774a759953.png) div { width: 200px; padding: 38px; margin-bottom: 12px; border-image: url('https://wmprod.oss-cn-shanghai.aliyuncs.com/c/user/20241016/9caf1196d21114e93c446084f8fc6f57.png') 38 / 38px round; } img { display: block; width: 100%; }

用node做中间件的意义是什么？另外，怎么用node做中间件? 平时提到node，大家都会说node一般都是做中间件使用，我个人用node写过后台接口，但是不理解用它做中间件是干什么，你们在项目中有用node做中间件的实际业务吗？

这个所谓的自动更新是不是只是提示有更新，点一下自动下载安装包而已？

最终我是这样搞的： web端访问： https://raw.githubusercontent.com/nuxt/starter/templates/templates/v3.json 能看到JSON如下： { "name": "v3", "defaultDir": "nuxt-app", "url": "https://v3.nuxtjs.org", "tar": "https://codeload.github.com/nuxt/starter/tar.gz/refs/heads/v3" } 打开这个tar压缩包地址： 链接: https://codeload.github.com/nuxt/starter/tar.gz/refs/heads/v3 手动下载tar，解压缩， 在这个压缩包的父文件下执行命令： tar -zxvf starter-3.tar.gz cd starter-3 然后就成功了，接下来继续按照文档操作即可: npm i npm run dev

在使用HTTPS协议的Web组件中加载混合内容时收到警告，页面主要内容通过HTTPS加载，但一些图片和脚本是通过HTTP加载的。

vue-cli项目打包，页面引用的组件在首屏就被加载了？ 有一个vue2老项目打包后是将所有js打包到5个chunk中，我想优化打包体积提升首屏加载速度.于是我把路由改成异步加载,并在vue-config.js中设置 config.optimization.splitChunks({ // chunks: 'async', // 只有异步的 chunks 才会被分割 chunks: 'all', minSize: 1024 * 300, // 最小 chunk 大小 }) 我发现route页面的js和css确实是异步加载了，但是页面中引用一些组件，却在首屏加载的时候就已经请求了，导致首屏有四百多个请求，js和css文件分别有接近200个，我看了文件内容就是页面引用的子组件（非路由组件）。 请问这是怎么回事，难道我要修改每个页面引用组件的方式？目前是这样的 import X from './component/X.vue'; components: { X } 我现在改成这样 "const X= () => import('X.vue');" 我想不明白，为啥页面是懒加载，页面引用的子组件也是异步引用的，但是子组件的js和css会被直接引用到了index.html里面 "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/c/user/20241011/2a89d44bf83df2dcd7fda219bdd71015.png)

Swiper

软件商店没有的扩展可以手动安装 ，类似先下载扩展源码， 解压，cd到扩展源码的目录执行： /usr/local/php-版本/bin/phpize; ./configure --with-php-config=/usr/local/php-版本/bin/php-config make && make install 上面的 /usr/local/php-版本/ 路径你要加上php版本号。 安装后有提示so文件目录，复制so文件到你相应的环境 /home/wwwroot/你的环境/ext/目录 /home/wwwroot/你的环境/etc/amh-php.ini配置最后添加一行，引用上扩展 如， extension=”xxx.so” 即可。最后记得重启环境的php。

例如： "obj['a.b.c']"

el-select多选模式，在全选时会把所有已选项通过Tags显示在选择框中，如图"image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/c/user/20241010/a2ca674cacdc726462b3ff03a184961b.png) 我现在希望在选择全部时，不显示这些Tags。而是仅显示全部两个字。如图"image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/c/user/20241010/1e847b8ab973b7ebf62f80e8e858784c.png)

visual studio code无法更新 点击check for updates出现"net::ERR_CONNECTION_RESET"错误。 可以安装插件，就是无法更新。 访问"visual studio code官网" (https://link.segmentfault.com/?enc=OBd2S2C%2BkMnisBAq7g8VZQ%3D%3D.Dy5ogYpwxfpZqryAHWlQgFW7pzwUVcHZf7f0Yase%2BQU%3D)，点击updates选择x64。他会自动跳转到"https://update.code.visualstudio.com/1.86.2/win32-x64-user/st..." (https://link.segmentfault.com/?enc=Y%2FjXicu8mKpz4WsJFLOL4A%3D%3D.Q1dtS5xOS9oqg9FfROVZ6N32jLowH3M4G%2F8JScwA7CWnsdw9mkCtH2cUufLZiJmpwWeBZekH%2F35DxLwBSW2pGkQ%2Fy2Vz3snPhVpu6nceVbc%3D)，浏览器提示“无法访问此网站”。这个更新网址也无法ping通。 "图1" (https://wmprod.oss-cn-shanghai.aliyuncs.com/c/user/20241009/06f647096cb8f9bf22a6c3c21e2af9a6.png) "图2" (https://wmprod.oss-cn-shanghai.aliyuncs.com/c/user/20241009/0549e94389092f68c33940ecff2ac164.png) 大家有出现这个问题吗？该如何解决？

«当一个函数可以通过某种方式访问其它函数内部变量时，闭包就形成了» 你每次执行"fn1"，里面的"var n = 0"，都把"n"初始化为"0"了。 "fn"其实也遵循这个规律，函数都这样。 但是，你的"fn"在复赋值给"fn1"之后，就没有再执行了。所以里面的"num"没有被重新赋值，又由于闭包的作用让它不会被销毁（语言引擎特性），使得你在每次调用"fn1"都可以访问到它累积起来的值。 回到开头的话，你的"fun1"就有能力访问"fn"内部的"num"。也就形成了闭包。闭包的特性就使得"num"不会被销毁（因为外面有函数可能会访问"num"，不销毁才合理）。 function fn() { var num = 3; // 这里加一个console.log console.log('outer num', num); return function() { var n = 0; n++; num++; console.log('n=' + n); console.log('num=' + num); } } // 连续调用两次看看，num的表现和n是一样的 fn() fn() 附一下阮一峰的闭包文章（阮一峰，我的hero!） "学习Javascript闭包（Closure）" (https://link.segmentfault.com/?enc=kXfewKEiq0D7frAtktz7Cg%3D%3D.AOfXOZ06cydaYTO9S202xFKenwwg0qDhRsdAVOg%2FvkY3pAgCd%2BR5remP%2B4RFfwtUy56zo7vZKhtL%2FGis4UnfI9S9lqvEf%2FMtiiwsYA8w%2B4w%3D)

redisTemplate使用Pipeline批量查询，返回的结果全是null，keys集合是有数据的，redis里也是有数据的 public List batchGetList(Collection keys) { List list = new ArrayList(); if (CollectionUtil.isEmpty(keys)) { return list; } // 自定义序列化 RedisSerializer stringSerializer = redisTemplate.getStringSerializer(); RedisSerializer valueSerializer = redisTemplate.getValueSerializer(); RedisSerializer defaultSerializer = redisTemplate.getDefaultSerializer(); List result = redisTemplate.executePipelined(new RedisCallback() { @Override public Object doInRedis(RedisConnection connection) throws DataAccessException { for (String k : keys) { System.err.println(k); byte[] bytes = connection.get(stringSerializer.serialize(k)); byte[] bytes1 = connection.get(defaultSerializer.serialize(k)); byte[] bytes2 = connection.get(valueSerializer.serialize(k)); System.err.println(Arrays.toString(bytes)); System.err.println(Arrays.toString(bytes1)); System.err.println(Arrays.toString(bytes2)); Object deserialize = defaultSerializer.deserialize(bytes); System.err.println(deserialize); list.add((T) deserialize); } return null; } }, redisTemplate.getValueSerializer()); return list; } "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/c/user/20241008/5f1185a49e3f4f7f6835c98598794e1f.png) 换了一种方式，返回还是null public List batchGetList1(Collection keys) { List list = new ArrayList(); if (CollectionUtil.isEmpty(keys)) { return list; } List result = redisTemplate.executePipelined(new SessionCallback() { @Override public Object execute(RedisOperations operations) throws DataAccessException { keys.forEach(key->{ System.err.println(key); Object o = operations.opsForValue().get(key); System.err.println(o); list.add((T) o); }); return null; } }); return list; } "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/c/user/20241008/ddd783c5cff336c676d3c8ec641aedfe.png)

vue2不会监听对象属性的新增（"深入响应式原理" (https://link.segmentfault.com/?enc=iHW2toUE7ozDbdVnZYYJFA%3D%3D.iq8GRKxwlPPz8qI9X5ZV4LpGm6wpMtIl8QwvDwM%2BcYa5DYNPrkjQ1OQvcl5uRFvC2BRmsJDX8HLrDAnnZV8zIj20vPkCJFWt133aV04sO5eK%2FNMypRrVpz%2BpFJXQ5qvw)），可以考虑使用 "$set" (https://link.segmentfault.com/?enc=lxJ8FQCNtVZszAgqTWzldg%3D%3D.kr%2BEv8NtC8iSE2a3Kc6Yuk8TkN0SpsuvjGdEQcIIUVpJZqj%2FaFn723ucl1yFCxjw) 来设置，或者给 "this.obj" 整个对象赋值 正好之前写过一篇分享笔记，你可以阅读一下 👉 "为什么v-model绑定的对象属性不是总是响应式？" (https://link.segmentfault.com/?enc=SSq6MCvfVFjvAfIKl%2Ff5vQ%3D%3D.Gudckz5ZTkRinYGzpkaTINN3bq%2BXalHXA9NXpBS4HPAqgkhnjSZPWld7JLH7RdutMEBbYU16YbeL%2FOn1OPNu1sMe%2BJKzs6pSIuMYGvwFnNO1etkYU6vm%2BCi6xVZi%2Ffaj)

背景： git项目中需要回退更改,执行 "git reset --soft xx" 回退成功之后，git push之后有报错 "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/c/user/20241006/6a34cedcd1658d699e7fbb3c765eaafc.png) 尝试强制push,执行 "git push --force" 仍然有报错 代码只能往前提交、push，不能回退、push