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Reasons that the passed Intent would be NULL in onStartCommand
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The JPA hashCode() / equals() dilemma
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127
Read this very nice article on the subject: Don't Let Hibernate Steal Your Identity.
The conc...
What are dictionary view objects?
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Dictionary views are essentially what their name says: views are simply like a window on the k...
Mixins vs. Traits
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Mixins may contain state, (traditional) traits don't.
Mixins use "implicit conflict resolution...
git: difference between “branchname” and “refs/heads/branchname”
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A ref is anything pointing to a commit, for example, branches (heads), tags, and remote branch...
C library function to perform sort
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qsort() is the function you're looking for. You call it with a pointer to your array of data, ...
Embedding SVG into ReactJS
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Update 2016-05-27
As of React v15, support for SVG in React is (close to?) 100% parity with c...
What's a concise way to check that environment variables are set in a Unix shell script?
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14 Answers
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Determining the current foreground application from a background task or service
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How do you use window.postMessage across domains?
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Here is an example that works on Chrome 5.0.375.125.
The page B (iframe content):
<html>
<head></head>
<body>
<script>
top.postMessage('hello', 'A');
</script>
</body>
</html>
Note ...