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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 [...
Is there a way of making strings file-path safe in c#?
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AeroX
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answered Dec 2 '08 at 7:35
Jonathan AllenJona...
How to handle back button in activity
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328
You can handle it like this:
for API level 5 and greater
@Override
public void onBackPresse...
How to add screenshot to READMEs in github repository?
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edited Jun 26 '19 at 11:35
answered Apr 17 '12 at 10:22
P...
How to get the first non-null value in Java?
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les2les2
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3
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Logging uncaught exceptions in Python
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answered Jun 4 '11 at 3:26
JacindaJacinda
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How to get GET (query string) variables in Express.js on Node.js?
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edited Sep 18 at 5:32
Nei
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answered Aug 2 '11 at 13:30
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0.1 float is greater than 0.1 double. I expected it to be false [duplicate]
...he double to float. float has 24 binary bits of precision, and double has 53. In binary, 0.1 is:
0.1₁₀ = 0.0001100110011001100110011001100110011001100110011…₂
^ ^ ^ ^
1 10 20 24
So if we round up at the 24th digit, we'll get
0.1...
How to create a MySQL hierarchical recursive query
... queries (e.g. Postgres 8.4+, SQL Server 2005+, DB2, Oracle 11gR2+, SQLite 3.8.4+, Firebird 2.1+, H2, HyperSQL 2.1.0+, Teradata, MariaDB 10.2.2+). And as of version 8.0, also MySQL supports it. See the top of this answer for the syntax to use.
Some databases have an alternative, non-standard syntax...
How to do a GitHub pull request
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238
(In addition of the official "GitHub Help 'Using pull requests' page",
see also "Forking vs. Br...