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JPA CascadeType.ALL does not delete orphans
I am having trouble deleting orphan nodes using JPA with the following mapping
11 Answers
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Android Json and null values
How can I detect when a json value is null?
for example: [{"username":null},{"username":"null"}]
6 Answers
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Get operating system info
I recently started wondering about sites like http://thismachine.info/ that get the user's operating system info. I have not been able to find out how to do that with PHP, and wanted to try to figure it out.
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How to get WordPress post featured image URL
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Check the code below and let me know if it works for you.
<?php if (has_post_thumbnail( $post->ID ) ): ?>
<?php $image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'single-post-thumbnail' ); ?>
<div id="custom-bg" style="background-image: ur...
Python Graph Library [closed]
I'm writing a python application that will make heavy use of a graph data structure. Nothing horribly complex, but I'm thinking some sort of graph/graph-algorithms library would help me out. I've googled around, but I don't find anything that particularly leaps out at me.
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离线版启动超时，有报错日志 - App Inventor 2 离线版 - 清泛IT社区，为创新赋能！
web服务启动报错：
Picked up JAVA_TOOL_OPTIONS: "-Dfile.encoding=UTF-8"
Executing [D:\appinventor\AppInventor2\resources\app.asar.unpacked\OpenJDK\bin\java, --add-opens=java.base/java.lang=ALL-UNNAMED, -Xmx4G, --add-opens, java.base/java.net=ALL-UNNAMED, --add-opens, java.base/sun.ne...
Is there a Rake equivalent in Python?
... its files are written in this language. Does something like this exist in Python?
9 Answers
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Test if something is not undefined in JavaScript
I'm checking if(response[0].title !== undefined) , but I get the error:
11 Answers
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jQuery Date Picker - disable past dates
I am trying to have a date Range select using the UI date picker.
16 Answers
16
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How do JavaScript closures work?
How would you explain JavaScript closures to someone with a knowledge of the concepts they consist of (for example functions, variables and the like), but does not understand closures themselves?
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