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 Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

php - How do I implement basic "Long Polling"?

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asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

javascript - Ways to deal with #document under iframe

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asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

visual studio - Why am I getting "Cannot Connect to Server - A network-related or instance-specific error"?

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217 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

javascript - Iterate through object properties

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118 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

python - What exactly do "u" and "r" string flags do, and what are raw string literals?

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204 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

c# - Dynamic LINQ OrderBy on IEnumerable<T> / IQueryable<T>

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306 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

r - How can I view the source code for a function?

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asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

c++ - What uses are there for "placement new"?

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174 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

How do I create a Java string from the contents of a file?

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70 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

sql - What is the most efficient/elegant way to parse a flat table into a tree?

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161 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

Passing a 2D array to a C++ function

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138 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

sorting - Sort JavaScript object by key

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320 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

Single line with multiple commands using Windows batch file

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173 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

if statement - Why non-equality check of one variable against many values always returns true?

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1.2k views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes

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153 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

java - Show JDBC ResultSet in HTML in JSP page using MVC and DAO pattern

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asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

c++ - How does the Comma Operator work

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117 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

python - How do I convert two lists into a dictionary?

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187 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

geometry - How do CSS triangles work?

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600 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

r - Simultaneously merge multiple data.frames in a list

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246 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

java - How do I create a file and write to it?

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asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

python - Why are global variables evil?

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281 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

javascript - How to format numbers as currency strings

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104 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

python - Selenium "selenium.common.exceptions.NoSuchElementException" when using Chrome

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269 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

mysql - What's the difference between INNER JOIN, LEFT JOIN, RIGHT JOIN and FULL JOIN?

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408 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

python - pandas convert some columns into rows

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72 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

javascript - Detecting a mobile browser

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92 views 1 answer

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

JavaScript post request like a form submit

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240 views 1 answer

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