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

sql - How to return rows that have the same column values in MySql

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

sql - How to reset AUTO_INCREMENT in MySQL

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

android - ViewPager PagerAdapter not updating the View

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

javascript - How to check if a string "StartsWith" another string?

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

MySQL Error #1071 - Specified key was too long; max key length is 767 bytes

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

html - Is it possible to write data to file using only JavaScript?

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

linux - Why should eval be avoided in Bash, and what should I use instead?

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

intellij idea - Android Studio shows wrong file contents

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

arrays - Linear indexing, logical indexing, and all that

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

Is R's apply family more than syntactic sugar?

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148 views 1 answer

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

sql - You can't specify target table for update in FROM clause

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

How do I read and parse an XML file in C#?

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

java - What causes javac to issue the "uses unchecked or unsafe operations" warning

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545 views 1 answer

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

What is the difference between null and undefined in JavaScript?

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

What is attr_accessor in Ruby?

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

python - Saving an Object (Data persistence)

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

c# - How do I remedy "The breakpoint will not currently be hit. No symbols have been loaded for this document." warning?

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

android - Maintain/Save/Restore scroll position when returning to a ListView

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343 views 1 answer

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

python - Count the number of occurrences of a character in a string

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142 views 1 answer

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

d3.js - Center a map in d3 given a geoJSON object

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954 views 1 answer

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

Is there a standard function to check for null, undefined, or blank variables in JavaScript?

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193 views 1 answer

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

mysql - Disable ONLY_FULL_GROUP_BY

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

javascript - When is a CDATA section necessary within a script tag?

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267 views 1 answer

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

java - Using context in a fragment

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

Sending and Receiving SMS and MMS in Android (pre Kit Kat Android 4.4)

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185 views 1 answer

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

Android: View.setID(int id) programmatically - how to avoid ID conflicts?

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480 views 1 answer

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

When do I need to use a semicolon vs a slash in Oracle SQL?

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292 views 1 answer

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

python - How to modify list entries during for loop?

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