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C# generic “where constraint” with “any generic type” definition?
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Regex empty string or email
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edited Feb 21 '11 at 9:08
answered Feb 21 '11 at 9:02
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Connect to a heroku database with pgadmin
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Open the "Properties" of the Heroku server in pgAdminIII and change the "Maintenance DB" value ...
What is “lifting” in Scala?
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There are a few usages:
PartialFunction
Remember a PartialFunction[A, B] is a function defin...
must appear in the GROUP BY clause or be used in an aggregate function
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Yes, this is a common aggregation problem. Before SQL3 (1999), the selected fields must appear...
Javascript : natural sort of alphanumerical strings
...Firefox, and IE11.
Here's an example. It returns 1, meaning 10 goes after 2:
'10'.localeCompare('2', undefined, {numeric: true, sensitivity: 'base'})
For performance when sorting large numbers of strings, the article says:
When comparing large numbers of strings, such as in sorting large ar...
How can I check if an element exists in the visible DOM?
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File Hash 扩展：文件哈希计算和 Base64 编码文件，sha256、sha512 哈希 ·...
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install / uninstall APKs programmatically (PackageManager vs Intents)
...that this installerPackage was only added fairly recently to the platform (2.2?) and was originally not actually used for tracking who installed the app -- it is used by the platform to determine who to launch when reporting bugs with the app, for implementing Android Feedback. (This was also one o...
What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
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I crea...