16892 Developer Q&A Community

asked Feb 5, 2021 in Others[杂七杂八] by ostack (1.4k points)

Welcome to Our Knowledge Sharing Community-Open, Learning,Share

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asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

mysql - 插入MySQL表或更新（如果存在）(Insert into a MySQL table or update if exists)

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349 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

java - Mac OS X上的Java安装位置在哪里？(Where is Java Installed on Mac OS X?)

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302 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

vim - 将所有行复制到剪贴板(Copy all the lines to clipboard)

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450 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

php - PHP数组按值删除（不是键）(PHP array delete by value (not key))

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480 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

python - 将Unix时间戳字符串转换为可读日期(Converting unix timestamp string to readable date)

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492 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

c# - 正则表达式仅用于数字(Regex for numbers only)

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315 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

html - 右键对齐放置按钮(Place a button right aligned)

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462 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

python - 如何修剪空白？(How do I trim whitespace?)

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382 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

python - 在CNTLM的代理后面使用pip(Using pip behind a proxy with CNTLM)

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336 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

typescript - 已设置InitialState，但未执行reducer。减少不改变商店(InitialState setted but reducer not being executed. Reduce doesnt change store)

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526 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

mysql - MySQL-基于SELECT查询的UPDATE查询(MySQL - UPDATE query based on SELECT Query)

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328 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

javascript - 如何将“ 1h30m”样式的持续时间解析为Moment.js持续时间(How to parse “1h30m” style durations into a Moment.js duration)

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394 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

javascript - 如何在列表的每一行之后创建按钮？(How to create buttons after each line of the list?)

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258 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

python - 从pandas DataFrame列标题获取列表(Get list from pandas DataFrame column headers)

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413 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

python - pip安装失败，并显示“连接错误：[SSL：CERTIFICATE_VERIFY_FAILED]证书验证失败（_ssl.c：598）”(pip install fails with “connection error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:598)”)

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744 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

javascript - 是否有标准函数检查JavaScript中的null，undefined或空白变量？(Is there a standard function to check for null, undefined, or blank variables in JavaScript?)

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282 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

html - 将favicon添加到静态HTML页面(Adding a favicon to a static HTML page)

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340 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

javascript - 在按钮上单击显示反应表(on button click display react table)

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407 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

http - 是否可以通过CoAP传输文件？(Is it possible to transfer a file through CoAP?)

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417 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

javascript - React Select-道具的setState(React Select - setState of prop)

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336 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

c - 将数字转换为数组中的单词(Converting numbers to words in array)

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318 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

android - 使用http响应标头的Flutter Cache JSON响应(Flutter Cache JSON response using http response header)

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345 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

linux - 如何在Linux中更改echo的输出颜色(How to change the output color of echo in Linux)

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337 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

html - 如何正确地为头像图像上的文本编写HTML和CSS？(How to correctly write the HTML and CSS for an avatar image with text to the right of it?)

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377 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

python - 更改Pandas中列的数据类型(Change data type of columns in Pandas)

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377 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

python - 用python中的占位符替换字符串(replace strings with placeholders in python)

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444 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

java - Java：如何初始化String []？(Java: how to initialize String[]?)

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218 views 1 answer

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

c# - 不区分大小写的“包含（字符串）”(Case insensitive 'Contains(string)')

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432 views 1 answer

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