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Why does my finished R histogram not have the amount of bins I specified?

I'm trying to visualize some numerical data to get a sense of how it is distributed, and am trying to graph it as a histogram to do so. ... -0.75, -0.5, -0.25, 0, 1.3) breaks=100...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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194 views

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Django 下怎么做日志审查

现有的系统下，要增加一个日志审计。现有的环境： Django+Mongodb 。然后想直接用 logging 来处理日志，但是怎么入库呢？看到网上也有人讨论 signals 来处理，这个块不是很熟，想问一下，只处理 views 可以吗，因为现有的环境没有 models 的处理。谢谢...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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457 views

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bluetooth - How to pair two BLE devices using secure passkey method in android?

I need to pair two BLE devices(one device is android phone [central app - discovers services] and other devices BLE ... this but in BLUETOOTH not in BLE devices. Any suggestions?...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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nginx中rewrite和redirect有什么区别呢？

我通俗的理解: redirect是浏览器向服务端发起请求后，服务端响应码为301或者302之类的重定向状态码，然后浏览器再次访问重定向后的url，等于是有两次请求 rewrite是直接返回修改后的url对应的内容，浏览器也就只有发起一次请 ... ，真实测试的时候发现，rewrite也会修改地址栏上的地址，这里如果按照我的逻辑不应该会修改地址栏的地址啊 ...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Trying to read register values of a process from task_struct

Currently I'm able to find the register values for the program which was written, but not for other processes. ... I cannot seem to locate which element contains the registers....

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Is there a 128 bit integer in gcc?

I want a 128 bit integer because I want to store results of multiplication of two 64 bit numbers. Is there any such thing in gcc 4.4 and above?...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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使用docker之后，启用了显卡优化。然后多了4个模拟的显示器，如何删除？

出现了4个模拟显示器，现在感觉电脑卡卡的。我已经卸载了docker了，不过这里还是无法还原回来...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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273 views

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sql server - How to display parent/child relation with two table in SQL

I have two SQL table UM_Module, UM_SubModule In the UM_Module table filed definition ModuleID Name MenuID and UM_SubModule ... 10 9 General Master General Master - Role Permission...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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484 views

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关于用js判断url地址时候存在某个字段的问题

我现在在做一个菜单通过js判断地址给菜单加样式，判断某个地址存在就给菜单的第几个li加样式现在的问题是写出来感觉很啰嗦，我需要一个一个判断，我现在的问题是想把这些字段都写到一个你们判断可以吗 ... if (hrefof.indexOf('recruit') > 0) { $(".menu > li ").eq(4).addClass('cur'); }...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Neovim: How to copy a visual block (each line might have different length) and paste the content without adding any extra spaces?

I am used to copying a block/column, and each row might have a different length, and when I paste in between ( ... any padding in the result. Source block House Car Garage Buses...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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342 views

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如题，感谢~...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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519 views

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sql - MySQL - How can I list all key names of a JSON data from column

I have a SQL table and that contains a JSON column. Now, I want to do that. How get the all key names from registered ... b apple banana wood food Is that possible? Can I do this?...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - J2EE : Issue with reading file - charset.MalformedInputException

I have an issue with this line of code : Map<String, Long> wordCounts = Files.lines(Paths.get(fileSource)) .flatMap( ... my computer (windows 10 family) though, with the same war....

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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在Weex中使用Vue，子组件与父组件通信问题

weex-vue-render: 0.10.0 主要发现了如下两个问题，有人遇到过么？ v-model 双向绑定在组件中（native端）无效？父子组件通信在web端与native端实现方式不同？有bug? 问题1：发现v-model双向绑定，在 ... =========================== 有人遇到过这种问题么？或许这算是bug？...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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451 views

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laravel - Authenticate different frontend with sanctum

I want to build a Laravel website that shares almost everything with a React-Native mobile application like authentication. and I ... for web so what is the best choice for me....

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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323 views

1 answer

android - (Kotlin) Setting a OnclickListener on a fragmentList Item

I′m making a tabbed activity, one of the fragments has to show a list of elements, in this case a cardview with a few ... Intent(context, Mood::class.java).putExtra("id", ?? ))...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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338 views

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javascript - Unexpected behavior with the CSS 'ch' unit

I am using the ch CSS unit for specifying the width of a ... </span></div></div>...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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301 views

1 answer

spring事务不回滚

1.spring事务不会回滚，网上的方法都试过了，没有效果 2.配置如下： 1.spring.xml: <context:component-scan base-package="com.szcshl"> <context:exclude-filter type=" ... ...... } 目录结构：求大神帮忙看看，调了一天了，感激不尽 ...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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使用远程app.weex.js发生错误,

weex编译成安卓项目, 并且把app.weex.js部署在远程服务器, 但是加载页面的时候却生如下错误: 项目地址: weex_android_demo app.weex.js地址: http://zhiliao.weex.zhaokuo.c... ... 这加载的就是远程的代码, 所以应该不是renserver的问题, 我猜测会不会是axios的问题??...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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284 views

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angular2如何在命名路由下使用子路由？

希望大大们上个配置实例...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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266 views

1 answer

vue v-for 第一个元素少了 data-v-xxx 属性

因为元素有列表样式，但第一个元素少了 data-v 属性，导致样式不正确，麻烦大神帮忙看看我的代码是这样的 <van-cell v-for="message in messageList" v-bind:key="message.id" class=" ... van-cell> 但渲染的结果是这样的不知道为什么会这样，网上都找不到答案，也没有人可以问...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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430 views

1 answer

请问图中应该如何修改为响应式布局?

,如图，地图部分的几个菜单在分辨率较低的屏幕下，会被挤到外面，这里用到的是element的row，，每个row里有一个.content,,应该如何修改可以让这个菜单适配不同的分辨率呢？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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421 views

1 answer

jquery - SwiperJS Slider becomes flat after loading

So, I tried putting a preloader for one of my websites today. The problem is with the swiper slider(with 3D Coverflow Effect). When the ... div> </div> </div> </div> </div> </div>...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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axios 请求性能优化的思考

这里封装了一个 Axios 的请求类，提供了发送请求的 request 方法每一个 API 接口使用其进行 ajax 请求用法如下：这样写的意思是，每调用一次 API 都执行一遍 request 方法，也 ... 搜索了下，axios.create() 创建过个实例对象会需要额外的垃圾回收 https://stackoverflow.com/que......

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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379 views

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执行DolphinDB脚本时报错Assignment statement failed

我选中了下面这两行代码一起执行， undef all prices=select * from loadTable("dfs://test_balance","pt") dolphindb会抛异常 "Assignment statement failed probably due to ... 逐行执行没有问题，一起执行就会抛异常请问这是什么原因造成的？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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221 views

1 answer

c# - Get push notifications quicker after device reboot

I'm using firebase for push notifications on both my android and iOS app with everything working fine. If I reboot the ... I doubt this would speed up the process of getting them?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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425 views

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我有个古老打字机怎么改装成键盘？

这个打字机是Canon Typestar 10，插座还是美式110v，和当年四通打字机很像，感觉可以改造成一个很酷的机械键盘，用树莓派之类的玩意，不过不知道怎么改，大家有啥意见？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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117 views

1 answer

Switching from NPM to GitHub Packages

I have a NPM package with a small user base, yesterday I created a new version and wanted to release it. I thought that ... NPM and just try to move users away from the NPM page?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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