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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...
Detecting when the 'back' button is pressed on a navbar
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UPDATE: According to some comments, the solution in the original answer does not seem to work ...
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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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 ...
Pairs from single list
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answered Jan 7 '11 at 17:35
Jochen RitzelJochen Ritzel
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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...
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 [...
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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