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What is the best way to filter a Java Collection?
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edited Nov 20 '17 at 19:23
StationaryTraveller
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a...
What are your favorite extension methods for C#? (codeplex.com/extensionoverflow)
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Rails migration: t.references with alternative name?
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edited Apr 17 '18 at 13:33
ndnenkov
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answered...
Pairs from single list
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answered Jan 7 '11 at 17:35
Jochen RitzelJochen Ritzel
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PostgreSQL return result set as JSON array?
...e result looks like this:
[{"a":1,"b":"value1"},{"a":2,"b":"value2"},{"a":3,"b":"value3"}]
9.3 and up
The json_agg function produces this result out of the box. It automatically figures out how to convert its input into JSON and aggregates it into an array.
SELECT json_agg(t) FROM t
There is ...
What's the reason I can't create generic array types in Java?
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answered May 28 '10 at 17:39
newacctnewacct
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Passing enum or object through an intent (the best solution)
...m result =
EnumUtil.deserialize(AwesomeEnum.class).from(intent);
OPTION 3 (with Kotlin):
It's been a while, but since now we have Kotlin, I thought I would add another option for the new paradigm. Here we can make use of extension functions and reified types (which retains the type when compilin...
Java: Instanceof and Generics
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edited Oct 15 '09 at 13:22
answered Oct 15 '09 at 3:10
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Comparing two collections for equality irrespective of the order of items in them
...oreach (T val in enumerable.OrderBy(x => x))
hash = hash * 23 + (val?.GetHashCode() ?? 42);
return hash;
}
}
Sample usage:
var set = new HashSet<IEnumerable<int>>(new[] {new[]{1,2,3}}, new MultiSetComparer<int>());
Console.WriteLine(set.Contains(new [...
Should I always return IEnumerable instead of IList?
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edited Dec 10 '12 at 8:31
answered Jul 2 '09 at 5:29
Jon...