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reactjs - how to set A5 page size in react-to-print

I usually use react-to-print for printing react components with a low effort and great flexibility. I want to set page ... to-print'; kindly guide me how to do page size setting...

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

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r - Ubuntu, how to deal the error "<stdin>:1:10: fatal error: git2.h: No such file or directory"?

I am trying to install the easypackages R package on R 3.6.1 on miniconda, which requires the installation of the gert ... using an Ubuntu 16.04.7 LTS operating system. Thank you...

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

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monaco-editor封装vue npm库ChunkLoadError: Loading chunk 55 failed.?

问题已解决方案见https://www.jianshu.com/write... 1.背景之前做了一个基于monaco-editor的SQL编辑器支持语法关键字提示高亮数据库表名字段提示的DEMO，托管到了github，最近 ... "src/*.{js,vue}": [ "vue-cli-service lint", "git add" ] } }...

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

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怎么判断时间戳为整点（比如01:00:00）

python 怎么判断时间戳为整点（比如01:00:00）...

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

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PostgreSQL - Loop through alternative query results

On PostgreSQL, I am trying to loop through alternative query results. I have this solution working: FOR target IN ... any way of implementing this behavior in PostgreSQL? Thanks!...

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

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MySQL 关于联合索引的字段顺序规则讨论

Mysql 建立联合索引时，我这边一般是基数小的排在前面，基数大的排在后面『如果不对，欢迎指正，谢谢大家！』今天后辈问起联合索引为何是基数小的排在前面？基数大的排在后面？想了很久，都不知怎么解释如果是你，你要怎么向后 ... 性别只有男和女的话，基数就是 2；再比如月份只有 12 个月，那么基数就是 12，所以性别字段的基数比月份字段的基数小 ...

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

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go net/http 每次请求结束都断开了tcp连接了吗

go net/http 每次请求结束都断开了tcp连接了吗我每次协程里面都新建了一个client client := &http.Client{ Timeout: time.Duration(Timeout * int(time.Second)), } ... Do(req) 每次协程都会运行这段http请求, 请问这个每次都会断开tcp连接吗?...

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

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Node中的 module 模块语法与ES6 的 export import 的模块语法冲突吗？它两是什么关系？

Node 和ES6 啥关系？模块的导入和导出方面,冲突？...

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

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923 views

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js 数组转换问题

` let arr1= [ {role:["O","O","O","B-V","O","O","O","O","O","O","O","O","O"], text:["Two","of","them","were"," ... },{'role':'I-ARG0','text':'Ministry'}, {'role':'O','text':'.'} ] ]...

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

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antd源码中throttleByAnimationFrameDecorator的疑惑

先贴源码(components/_util/throttleByAnimationFrame) export function throttleByAnimationFrameDecorator() { return function(target: any, key: string ... 加一个同名方法感觉definingProperty没派上用场啊？...

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

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table设置rowspan后设置宽度不起作用

<table width="100%"> <thead> <tr class="firstRow"> <td colspan="12">展会名称：第XXX届北京国际XXX博会</td> <td colspan="12">日期：2025年2月25日- ... ></td> <td></td> <td></td> </tr> </tbody> </table>...

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

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How do I use C to launch a process in linux and write to that process STDIN and collect its STDOUT and STDERR?

I'm using C++ but obviously linux commands are in C I want to launch a process with a specific argv, write to its STDIN ... without it). What functions do I need to use to do this?...

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

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api - Is it possible to update google form questions according to the answers submitted?

My professor asked me to create a google form that will allow students to opt for subjects/topics or recommend a topic of ... them using python or do I have to learn something new?...

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

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221 views

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react-native怎么使用css的border-radius四个复合属性？

像这样的一个属性,能不能在rn中拆分成对应值? width: 50px; height: 50px; border-radius: 80% 0 55% 0 / 55% 0 80% 0; 我试 ... : width*0.55/width*0.8, borderBottomRightRadius: width*0.5/width*0.5,...

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

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java - log4j.xml sends same logs to file and td-agent in different way

How come same logs processed in two ways? The logs which have which are saved as json in a file are ... ":"FelixDispatchQueue"},"process":"isDockerEnv","service":"SPS&quo...

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

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在阿里云ubuntu服务器安装虚拟环境：No module named 'CommandNotFound'

问题描述首先我安装的是anaconda，因为我安装python3.8无论无何都出现问题；然后试用以下代码实现修改软连接： ln -s /root/anaconda3/bin/python3.7m /usr/bin/python3 ... module named 'CommandNotFound' ### 你期待的结果是什么？实际看到的错误信息又是什么？...

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

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apache - one locale redirection issue

I have written a redirection rule on Apache 2.4 as below RewriteCond "%{TIME_YEAR}%{TIME_MON}%{TIME_DAY}%{TIME_HOUR}%{ ... in the rule ? or should i change something to work....

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

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javascript - How to use useState hook to map JSON response from API

My API returns complex json like these. [ {id: 1, pub_date: "2021-01-06T20:24:57.547721Z"}, {id: 2, pub_date: "2021-01- ... ]); why setCnt is not workd?? I am more confused.........

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

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求解答：如何通过python中的request库，爬取知乎个人信息页中的“详细信息”？

目前知乎的个人信息页面，必须点击查看详细资料才能看到具体信息，我通过requests的get请求，得到的response中是没有具体的信息的，要怎么操作才能得到详细资料？我知道通过selenium可以通过模拟操作 ... 为查看详细信息 --展开后，才能看到具体的信息示例网址：https://www.zhihu.com/people/ejing1...

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

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Send E-Mail with output log and success status in Python

I want to send an E-Mail automatically after each script run, whether it was successfull or not. The E-Mail should ... TEST') ... ... status mail is automatically sent afterwards...

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

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How can I save the standard Yum output to a variable from the Python Yum API?

For example: >>> import yum >>> y = yum.YumBase() >>> x = {'release': '11.el7', 'epoch': '', 'version': ... . Is there a clean way to assign the standard yum message to a variable?...

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

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javascript - z-index causes div to cover everything even when div is transformed off screen

I have a slide in menu, it slides in because I use useState to set the state of a boolean variable, and if that ... able to work when the slide in menu is positioned off screen....

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

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这两句话是什么意思？能解释下吗？

今天看别人代码时看到的 for(;n>87;) n = n - 87; if(n==0) n = 87;...

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

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python - single positional indexer is out-of-bounds : Error

I am practicing working in dataframe in pandas.i came across an error for which i dont understand the reason why there ... ("hey") Error: single positional indexer is out-of-bounds...

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

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Java中list集合根据字段汇总金额

我有一个Foo类 class Foo { private String id; private String currency; private BigDecima amount; ... constructor, getters & setters 现在有一个List ... 上的amount相加汇总成一个新的List集合最好使用lambda表达式...

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

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python - What does [..., None] mean in Numpy?

I am new to Numpy and deep learning. I encountered such a snippet when learning about layer normalization. a=array([[[-0.66676328 ... ) What does [..., None] mean in Numpy? Thanks!...

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

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在java中这个cursor 和chunk 是什么关系？

private long trunckCursor = -1; if (printState == printStateReadChuncked) { //数据分片处理 if (trunckCursor <= 0) { trunckCursor = headerSplitByte; ... 看到这个代码？一直不知道这个cursor 啥意思为啥这里是-1？...

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

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js数组问题

data = [0,3] data = [5,9] data = [4,4] 如何转变为[0,1,2,3] 如何转变为[5,6,7,8,9] 如何转变为[4]...

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

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