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180 views

1 answer

对于简单的数组可以用indexOf来查找元素所在的位置，但是对于复杂数组，有什么简单的方法吗？例如： let list = [ {id:1,val:100}, {id:10,val:100}, {id:11,val:300}, {id ... {id:20,val:500} ] 我拿到id=10 怎么判断id==10所在项的数组索引，除了for循环之类 ...

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

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172 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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237 views

1 answer

vue+express+mongoose 如何让express获取前端query中的参数

练手的项目，写到搜索的时候卡住了是想让vue用$router.query传参，但是不知道怎么传到后端用api搜索来向大佬们求助后端express代码，这里的接口我用postman测试了一下是没有 ... }`).then(response => { commit('ALL_IMGS', { imgs: response.data }); }) },...

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

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267 views

1 answer

android - Mixing two16-bit encoded stereo PCM samples causing noise and distortion in the resulting audio

I get two different audio samples from two sources. For microphone sound: audioRecord = new AudioRecord(MediaRecorder. ... Any help here is appreciated. Thanks in Advance!...

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

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362 views

1 answer

How to decorate all functions and class methods in python?

For debugging purpose, want to decorate all functions and Class methods in a module file automatically ? There are some methods ... mydeco(f): print(vars) time.sleep() return f...

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

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610 views

1 answer

vue项目如何实现导航栏中的前进和后退都要刷新页面？

vue项目如何实现导航栏中的前进和后退都要刷新页面？现在前进和后退页面并没有重新加载...

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

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1.4k views

1 answer

echart 散点图无法改变颜色

有个需求是根据目标点名称来改变颜色，但是下面这样我怎么试都是默认的暗红色 series: [ { data: scatterData.seriesData, type: "scatter", tooltip: ..., itemStyle: { normal: ... 暗红色 } } } } } ] 而直接赋值颜色是可以的 color: 'blue' 求指点...

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

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421 views

1 answer

android - when should use DONT_UNCOMPRESS_PRIV_APPS_DEXS

# Disable uncompressing priv apps so that there is enough space to build the system partition. DONT_UNCOMPRESS_PRIV_APPS_DEXS := true ... enable it as long as I have enough space?...

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

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301 views

1 answer

c - Unable to include `linux/config.h` on 5.8 kernel

Originally I was trying to include linux/config.h to compile an old driver from source originated from the 2.6 kernel ... linux/config.h with to make this driver compiled and run....

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

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382 views

1 answer

在sublime中设置动态代码块的时候，如何输入任意多行重复的代码？

安装Emmet插件之后，有了很多的自动提示，比如 ul>li*5+tab键就可以输出5行li标签，现在我想输出任意多行其他类型的代码，比如我想输出 n行input类型的标签，这个代码块怎么设置才能输出任意行呢？比如：我输入 input*3，就会输出3行input标签，想要实现这个效果。...

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

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121 views

1 answer

android - How to delete and moveback to previous passcode box?

i'm developing some apps that use One-time password. The problem I face is, when the box is not filled(6th box), ... void dispose() { super.dispose(); controller.dispose(); } }...

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

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380 views

1 answer

devServer.proxy没生效是为什么？

本地npm run dev启动以后是 http://localhost:1024 想在请求的时候替换成把http://localhost:1024/captchaImage替换成 http://inte-bm-server.chanapp.chanjet.com/ ... /防爬虫文件 to:'./',//到根目录下 } } ) } }...

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

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396 views

1 answer

spring batch - Why transaction is not getting Rollback if there is RunTimeException in JdbcBatchItemWriter

1- If I am using SkipPolicy in my code : I am using multiple JdbcBatchItemWriter with the help of ... dataSource) { return new JdbcBatchItemWriterBuilder<CustomObject>() .ite...

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

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461 views

1 answer

android - Unpair bluetooth device not working in redmi phones, Used "removeBond" this method working in all other device

fun BluetoothDevice.removeBond() { try { javaClass.getMethod("removeBond").invoke(this) } catch (e: Exception) { ... allowed ownerUid to remove bond unless callerUid is system uid....

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

0 votes

344 views

1 answer

sql - Migrating Postgis database from one desktop to another fails with backup and restore feature

I've received multiple backup files from databases which are present on a localhost server from another desktop (not ... ignore it. Any tips or possible solutions are appreciated....

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

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900 views

1 answer

antd 的Transfer 穿梭框组件使用求助

demo 需求：自定义穿梭流程，点选左侧的项目时，选中对应项并直接在右侧列表显示；点击右侧列表中的项目，直接从右侧移除同时取消左侧的选中状态难点：官网demo中，右侧展示的同时，左侧都被disabled了，这里 ... 常使用时，选中左侧必须点击穿梭框中间的按钮才会进行穿梭操作，这里的需求时在onSelectChange的时候测试链接：demo...

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

0 votes

745 views

1 answer

delphi - How to show the PrintDialog just after showing the preview in FastReport?

I'm using Delphi to develop a desktop database application, and I've an invoice report made with FastReport, I know ... preview. The user then can print it or cancel the dialog...

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

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290 views

1 answer

python - Multiplying the current value of a variable

Write a statement that assigns cell_count with cell_count multiplied by 10. * performs multiplication. If the input is 10, ... and its not the correct answer, can someone help me....

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

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231 views

1 answer

URL后面带#的DOM XSS如何防范

类似以下这种DOM XSS，在web服务器中日志并不显示#以后的内容，如何进行防范？ http://www.xxx.com/index.html#"'style=width:expression(alert(777));...

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

0 votes

470 views

1 answer

vue.js关于组件里面的input事件的疑问

如下代码vue在$emit`里面的input`参数到底值得是什么意思？还请指点一下，谢谢 <body> <div id="app"> 你现在的银行卡余额是{{totale}} <!-- <appcom @change= ... ; this.$emit('input', this.count); } } } } }) </script> </body>...

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

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156 views

1 answer

页面模块怎么获取VUE组件的input值

用的是antd.我在页面模板的table的columns上用scopedSlots: { customRender: 'edit' }把table columns下的td中都插入了插槽，插槽中定义了自定义组件，点击td,就会把input ... ', this.value); }, edit () { this.editable = true } } }...

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

0 votes

380 views

1 answer

200和304的一个疑问

我在浏览器中直接输入 https://www.baidu.com/ 页面内请求了一个jquery的js https://dss0.bdstatic.com/5aV... f5刷新几次，http 状态都是200 但如果把这个js单独输入在浏览器中，刷新几次，都是返回304，虽然两者的response header基本都相同请问这个是什么原因呢...

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

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1.2k views

1 answer

adding c++ library giac/xcas to iOS project

I've never included a C++ library in an iOS project before. Therefore I do not have so much experience with setting specific ... in file first.h Do I have to make other settings ?...

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

0 votes

775 views

1 answer

itext - Java - How to merge multiple documents (With Multiple file formats) to a single PDF File and print as a single document?

Currently I am having a requirement to download multiple files (PDF , XLXS , PPT , JPEG , PNG) from SFTP Server ... performed the file download using JSCH from SFTP to the server....

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

0 votes

469 views

1 answer

Map GPS in Python kivy

I recieve live feed of gps coordinates from an embedded system. I have an interface in kivy to start and stop the ... given a live feed of gps coordinates? Thank you in advance....

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

0 votes

1.2k views

1 answer

python - "NameError: name 'redirect' is not defined" even though redirect is imported

I have this simple Flask 1.1.x app: from flask import Flask from flask import redirect, render_template, url_for app ... m calling it the same way the Flack Quickstart Guide does....

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

0 votes

211 views

1 answer

html - using 2 wildcards anywhere in the html5 input pattern

I'm working with a word search system, I should be able to use wildcards in the input. The pattern I use works but it only ... ?EAR?CH" or "?SEARCH" or "SEARCH*" or "SEARCH??"...

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

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176 views

1 answer

apache - Htaccess not redirecting to new base

I would like to redirect anything that does not begin with /X, to /X, and, I'm trying to do this by using .htaccess ... but for example www.site.com/style.css It's now working......

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

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