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439 views

1 answer

vue form表单提交上传图片,还有表单数据怎么整

vue form表单提交上传图片,还有表单数据怎么整...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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520 views

1 answer

jsonschema - JSON Schema validator compatibility

I'm trying to understand how a single JSON Schema behaves when used in different validators. Some validators define custom keywords. For ... : "object", "prohibited": ["foo"] } ] }...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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602 views

1 answer

vue如何给标签动态添加自定义指令

Element的弹出框组件如何将这个弹出框组件中的v-popover指令添加到元素中...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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255 views

1 answer

字符串中的\如何正确表示出来？

js var str = 'a=\b, b=\c, c=\\d'; console.log(str); 输出结果a=, b=c, c=\d 这种情况怎么解决呢~~~~...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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323 views

1 answer

weex中两个text混排如何实现自动换行？

例如...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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220 views

1 answer

箭头函数this？

var obj = { a: 10, b: () => { console.log(this.a); // undefined console.log(this); // Window {postMessage: ?, blur: ?, focus: ?, close: ? ... 一致在全局代码中，它将被设置为全局对象想问下封闭词法环境到底是什么环境？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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202 views

1 answer

python - Creating a loop moving by 10

I'm trying to create two for loops, the first one (k) moving by a window of 10 e.g., (1,10,20,..,90) until 90. and ... in range(1,100) for l in range(1, 100)]) thanks in advance....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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487 views

1 answer

金融行业软件数据库主从模式是否是采用强一致性的方式？

金融软件比如银行在用数据库主从模式的时候是否要求主库和从库是强一致性的，也就是必须要主从库同时写入成功才算数据库操作成功？如果是redis之类的缓存有主从的模式是否也一样？望有金融类软件从业经验的能解答下。...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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298 views

1 answer

html - Bootstrap Collapse Item Misaligned only on IOS Devices

I'm using Bootstrap 5.0 to make a responsive wep page. Using Collapse item to display links after on click to main element. It ... ; } collapse-item { /* position is not set */ }...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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528 views

1 answer

为什么我用vue.config.js代理多个api接口的时候会报错？？

为什么我用vue.config.js代理多个api接口的时候会报错？？只能代理第一个接口，其他代理的接口都显示加载资源失败？？求大佬看看网上搜的，代理多个接口的时候的写法然后就报错，搞不懂为啥下面的是第一个代理返回的结果上面的是第二个代理返回的结果，显示加载资源失败求大佬帮忙解决下，顺便问下这是什么地方出了问题...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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427 views

1 answer

how to use form to set the values of params (for Scope) in Ruby on Rails?

I want to build a filter with the help of scope in ruby on rails. In my controller, I have the lines: def index ... I don't know why it refers to 'create' Thanks in advance!...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.8k views

1 answer

echarts 地图在h5上手势缩放级别问题

echarts地图在h5上显示，用手势缩放地图，手势稍微动一动，缩放级别就到头了，例如我的缩放级别是2-15，手势缩放稍微滑动下就到limit了，这种应该怎么解决，能否慢慢缩放，找了半天都是关于监听缩放事件的？请问有没有知道如何控制缩放的速率的...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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354 views

1 answer

typescript设置了默认，结果还报 undefined

我前面判断SELECTION_CACHE[selectionStateKey][cachedActiveType]是否为undefined，如果是undefined给了默认值{}，最后 typescript报错说 ... [selectionStateKey][cachedActiveType]可能是undefined 这怎么解决？？？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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251 views

1 answer

python 3.x - How do I print the last message from a Reddit message group using Selenium

So I get the messages from this line: <pre class="_3Gy8WZD53wWAE41lr57by3 ">Sleep</pre> My code: from selenium import ... edit it twice because of some mistakes that I had made...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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168 views

1 answer

javascript - Using react.js, putting strange numbers in database

I have a stopwatch in react.js. After the stopwatch ends, the user can put their time in a database. In the ... 't understand why it is putting these weird numbers in the database...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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594 views

1 answer

cancellationtokensource - How to call api vs parameters cancellationToken xamarin forms

I am building an operation that calls api with the cancellationToken parameter. cancel () from event A, ... (request,token); }catch(TaskCancellationException ex){} }...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

682 views

1 answer

vscode python语言环境下载language server 缓慢或卡住

vscode, python lang，有人知道图中标示部分，每次打开 vscode 的窗口，总是下载 miscrosoft language server，却总是下载不下来要怎么搞么？之前下载完成过一次想要：只下载一次，下载完成之后就不再下载 ... 像叫做 hedi 的server作为可选, 可能没有这么强大？是否下载的这个服务有不一样的神奇之处 ...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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441 views

1 answer

node.js - How to not duplicate data when using fs.writeFile?

I'm trying to get some data from a simple form and write a JSON file using node JS and FS. I need this: [{"id":1," ... JSON file. I don't know how to reset it. May someone help me?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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369 views

1 answer

node.js - .env file not in Heroku CI/CD with Gitlab

I am trying to deploy a Node.js application to Heroku via a GitLab pipeline. The below is my ... $HEROKU_APP_PRODUCTION --api-key=$HEROKU_API_KEY --skip_cleanup only: - master...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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460 views

1 answer

如何正确在递归中写for循环？

这是LeetCode的#### 55. 跳跃游戏 var canJump = function(nums) { let state = false; let length = nums.length-1; recur(length) //递归函数 num是位置 list是数组 ... 不满足条件后续的循环的第二次就不运行了很迷惑是因为递归不能用For吗...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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408 views

1 answer

CSS Failed to Customize the dropdown arrow ▼

I can't customize it, he refuses! important Did I miss something? My Dropdown codepen .fs-arrow { width: 0; height ... ; margin-bottom:24px; right:auto !important; width:23px; }...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

321 views

1 answer

Flutter Charts - marker color not matching series color

I am using TimeSeriesChart from the flutter_charts package, and the colors of the selected markers are not matching up ... , updatedListener: _onSelectionChanged, ) ], )), ),...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

268 views

1 answer

Converting Javascript array to PHP array or passing it to a PHP file

I am working on a movie ticket booking database using Mysql and PHP.I've done the frontend part using HTML,CSS. The below code ... .png"; seats.push(id); alert(seats); } </script>...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

ios - Facing error in swift UI “Invalid frame dimension (negative or non-finite)” while drawing negative value in chart

In widget iOS14, I want to show values in graphical form using bar chart. I have used this library "https:// ... . "[SwiftUI] Invalid frame dimension (negative or non-finite)"...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

472 views

1 answer

如何获取字典一组键值的最后一个元素

在DolphinDB database中，定义了一个字典，它的值是一个vector，比如下面的字典d： d=dict(STRING,ANY) d[`600001.SH]=10 11 12 d[`600002.SH]=61 62 63 对于这个 ... (最后一个元素，比如600001.SH的12，600002.SH的63)组成，请问有没有简单的实现方法？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.2k views

1 answer

redis 管道报错

$(echo -en "PINGrn SET runoobkey redisrnGET runoobkeyrnINCR visitorrnINCR visitorrnINCR visitorrn"; sleep 10) | nc localhost 6379 (echo -en ... nc localhost 6379 怎么都运行报错，复制的一模一样的啊...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

178 views

1 answer

How to draw building floor map in react native

We need to draw building floor map using react native as shown in below image....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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216 views

1 answer

html - Website looks differerent on different computer(s) running the same browsers

OK. This one has me stumped. It's a "asking for a friend" type of question. My wife is an artist. She uses ... address and MAC on her computer but there is no difference. Ideas?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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