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What are the differences between type() and isinstance()?
...th isinstance. The concept is obviously a growing one in Python, since PEP 3119, which introduces a generalization of it, was accepted and has been implemented starting with Python 2.6 and 3.0.
The PEP makes it clear that, while ABCs can often substitute for duck typing, there is generally no big p...
Why XML-Serializable class need a parameterless constructor
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answered Nov 6 '08 at 5:37
cfedukecfeduke
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Difference between Django's annotate and aggregate methods?
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3 Answers
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Injecting Mockito mocks into a Spring bean
I would like to inject a Mockito mock object into a Spring (3+) bean for the purposes of unit testing with JUnit. My bean dependencies are currently injected by using the @Autowired annotation on private member fields.
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Swift variable decorations with “?” (question mark) and “!” (exclamation mark)
...= 2
// The type here is "Implicitly Unwrapped Optional Int"
var z: Int! = 3
Usage:
// you can add x and z
x + z == 4
// ...but not x and y, because y needs to be unwrapped
x + y // error
// to add x and y you need to do:
x + y!
// but you *should* do this:
if let y_val = y {
x + y_val
}
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What are all the common ways to read a file in Ruby?
...2.0.0).
– chbrown
Jan 12 '15 at 22:53
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Table Naming Dilemma: Singular vs. Plural Names [closed]
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answered Dec 3 '08 at 19:31
community wiki
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How to PUT a json object with an array using curl
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jscs
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answered Mar 15 '13 at 14:02
Daniel Stenbe...
MYSQL OR vs IN performance
...000x the equivalent queries (for consistency, I used sql_no_cache):
IN: 2.34969592094s
OR: 5.83781504631s
Update:
(I don't have the source code for the original test, as it was 6 years ago, though it returns a result in the same range as this test)
In request for some sample code to test this, h...