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Animate change of view background color on Android
...ionDrawable) viewObj.getBackground();
transition.startTransition(transitionTime);
Or run the transition in reverse by calling:
transition.reverseTransition(transitionTime);
See Roman's answer for another solution using the Property Animation API, which wasn't available at the time this answer...
Can I set variables to undefined or pass undefined as an argument?
I’m a bit confused about JavaScript’s undefined and null values.
10 Answers
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How to generate the JPA entity Metamodel?
In the spirit of type safety associated with the CriteriaQuery JPA 2.0 also has an API to support Metamodel representation of entities.
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What is the purpose of the single underscore “_” variable in Python?
...('This is a translatable string.'))
2019 update: Added lambda. For a long time this answer only listed three use cases, but the lambda case came up often enough, as noted here, to be worth listing explicitly
2020 update: Added lint. Surprised nobody has highlighted this because it's common to have ...
Collections.emptyMap() vs new HashMap()
...y map rather than a null to indicate the absence of a map. And most of the time when you are using a map, it is better to use an immutable map. So this is why there is a convenience function to make an immutable empty map.
s...
Select values from XML field in SQL Server 2008
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Bizarre. This has been voted up 102 times, but this answer only returns data from the first XML record. And it refers to some [myTable] table... where did that come from ?!
– Mike Gledhill
Sep 8 '16 at 9:05
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How do you prevent IDisposable from spreading to all your classes?
Let's say I have a simple set of classes like this:
7 Answers
7
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How do I convert an interval into a number of hours with postgres?
...we can now modify this to be SELECT extract('epoch' FROM age('2014-08-02'::timestamp)) / 86400 (I'm using Pg 9.4), since age(ts) automatically use CURRENT_DATE when only one argument.
– 1111161171159459134
Dec 11 '15 at 19:19
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PHP + MySQL transactions examples
...ack is a good idea even if the error was not on the db side, but there are times 3rd party/non-critical code may cause not-so-important exceptions, and you still want to continue with the transaction.
– Halil Özgür
Jun 1 '12 at 14:10
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How does inline Javascript (in HTML) work?
...n placing inline styles, which is also W3C Documented and can be useful in times. Whether you place it wrapped in script tags or not, it's gonna be interpreted the same way.
https://www.w3.org/TR/html5/webappapis.html#event-handler-idl-attributes
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