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1 answer

javascript - React Native: cannot use function as default state hook? issue with array computation and slow UI

I have a function that takes a few discounts and groups them by days, so the final result is an array of 7 ... (allDiscounts); return weekDiscountsCopy; } } }; Thanks in advance!...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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484 views

1 answer

border:1px solid #fff 用火狐控制台看布局为什么只有0.8px

border:1px solid #fff 用火狐控制台看布局为什么只有0.8px，有谁知道吗...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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483 views

1 answer

Linux（centos）下Apache 不加载js，css，img等文件，权限给的777,修改文件后缀就可以访问?

以下为配置文件 ps： 1.两个项目都是如此，权限给的777； 2.重定向都开启了； 3.修改文件后缀即可访问，如.js->.js1 那么我在访问该文件就能找到...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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844 views

1 answer

compression - Compressed Audio Quality Factor

I'm working on a project where I compress audio signals, I need a factor to show the difference between the compressed ... I searched the web and I am a bit confused. Thanks!...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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252 views

1 answer

js算法问题？

四条：开奖号码中有1个数字出现四次，另1个数字出现一次如：11113, 22022. 葫芦：开奖号码中有1个数字出现三次，另1个数字出现两次，如：11122, 32323, 顺子：开奖号码的5个数字不同且相连，如 ... 数字各出现一次：例如：11256, 46689, 单牌：开奖号码的5个数字各不相同，且不为顺子例如：12348,24680....

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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323 views

1 answer

git blame结果中的"+0800"是什么意思？

如题，下面是截图：...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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177 views

1 answer

js关于Date的问题

图片描述 new出来的这个date 和Date,以及Date()这三者有何区别？为什么第一个能打印出时间戳，第二个会提示now 不是函数？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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118 views

1 answer

Object.prototype和Function.prototype是如何被创建出来的？

网上看过很多文章，都说js引擎最先创建了Object.prototype，然后创建了Function.prototype，这样接下来就可以创建Object构造函数和Function构造函数了而Object.prototype和Function.prototype又都是简单对象 ... 建了自己如何理解这四个东西创建的时机顺序？最好能给出ES规范的原文...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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206 views

1 answer

c - I am trying to pass a string into a function with a double pointer but getting an error

So I want to pass the double pointer of a character array, but I am getting this error: "warning: comparison ... len = strlen(*ptr_double); word_counter(ptr_double, len); }...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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350 views

1 answer

rust - how read mixed binary/text file with io::Cursor and byteorder?

I wanna read/parse a data file mixed binary/text. This file isn't utf_8 format and can't be converted. The structure of ... " of char type in a mixed binary/text in my case?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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248 views

1 answer

Python openpyxl library refusing to load my excel document

I have worked with excel documents in the past, but for some reason python is REFUSING to open this particular one. ... . So it is definitely a formatting issue of some sort...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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292 views

1 answer

我这个递归怎么获取不到路径

如题我想获取menu数组下的带http开头的路径，最后还是为空？怎么回事？ var menu = [{ "path":"/a", "children":[{"path":"http://baidu.com"," ... .children) } } }) return path; } var t = exPath(menu); console.log(t)...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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200 views

1 answer

File upload CURL command to PHP Curl

I have CURL command I need to use him in php page how I can change it. I have no idea about it. The command : curl ... 'content-type: image/jpeg' --data "@/path/to/local-file.jpg"...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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349 views

1 answer

node.js - Server dont load data

Request failed with status code 500 /src/actions/productActions.js Line 125:13: 'data' is ... /api/errors.html#errors_common_system_errors for more information (ECONNREFUSED)....

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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515 views

1 answer

怎么做到跳转路由切换 view 的时候保存用户填写的表单数据？~

目前想到的办法是存到 $rootScope 上显然不好…… 可以保存到 Service 里吧但是保存的时机是什么呢监听表单 input 然后实时的去调用 setter 方法吗？~ 有没有更优雅的方法?~...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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481 views

1 answer

matplotlib - sns.catplot - how can i make my legend bigger?

I have this code: ax = sns.catplot(x='account_name', y='cnt', hue='threat_campaigns',data=df_mitigation,kind='bar', ... - everything is very small - how can i make it bigger....

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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181 views

1 answer

How do I return a Result data type in Rust?

I have the code below fn main() { let num: i64 = 600851475143; println!("Largest prime: {}", ... what does the function actually return? Am I using ? incorrectly...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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542 views

1 answer

angular怎么把商品添加到购物车

...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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548 views

1 answer

hadoop - How to add hive auxiliary jars to Dataproc cluster

When you start a hive session in Dataproc you can add jars that live in a gcs bucket. add jar gs://my-bucket/serde. ... value>hdfs,pfile,gs</value> <final>false</final> </property>...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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380 views

1 answer

如何关闭jshint的部分验证规则？

我用vue-cli生成的Webpack模版，写代码测试的时候老是提示xxx is defined but never used，如何关闭这个检测是否使用的功能啊？还有其他的验证规则怎么关闭？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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403 views

1 answer

获取当前地理位置js方法？

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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503 views

1 answer

《Flask Web 开发》无法更新数据库

学习到《Flask Web开发》第八章时，运行代码报错后来意识到User表中新增了一列，应该更新数据库，执行 python manage.py db migrate -m "initial ... id: return False self.confirmed = True db.session.add(self) return True 求指导！！！...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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346 views

1 answer

python - No matching distribution found for tensorflow==2.1.3

I have Python version 3.7.8 (64-bit) and pip version pip-20.3.3. I am trying to install tensorflow 2.1.3 but ... =2.1.3 ERROR: No matching distribution found for tensorflow==2.1.3...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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171 views

1 answer

html - How to use javascript map to rtuen object?

I am using map JavaScript function to return an object. row.id throws error . I want to create id as key for every iteration in ... row => { return { row.id : row.value } }) }...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

310 views

1 answer

wepback css的图片，字体，没有打包出来

我用webpack，打包css的图片时，最后生成的文件是没有的，所有的文件夹里都没有这是代码： output: { path: path.resolve(__dirname, './dist/'), publicPath:'./dist/' ... /home_nextBtn.png) 百度过了发现也不行主要的问题是，文件没有打包出来 ...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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423 views

1 answer

kotlin - Android - How to add a textView's built-in scroller function programmatically?

I try to add a manuel scroll feature to a textView just the same as the textView's built-in feature. I try to do ... function. I couldn't find any solution for that, any ideas?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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609 views

1 answer

webpack 打包 sass 样式用@import 引用其他文件夹下的样式图片路径问题

我使用webpack打包 sass文件,现在遇到的问题是我的目录结构如下: 其中variable.scss中我引入了img中的图片 arrow-in.png $color:red; .arrow-in{ display: inline-block; color: ... ,所以想问下,有什么方法解决这个路径问题,或者是有什么loader可以解决这个问题....

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

387 views

1 answer

Laravel 5.4 User模型无法使用can()方法，说方法不存在

在PostController创建帖子： public function store(PostRequest $request, Topic $topic) { // Get user id. $user = ... } 报错： Call to undefined method IlluminateDatabaseQueryBuilder::can()...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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