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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 [...
What is the naming convention in Python for variable and function names?
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Calling method using JavaScript prototype
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ChristophChristoph
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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...
一文了解大数据领域创业的机会与方向 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...示：2014年中国大数据市场规模达到767亿元，同比增长27.83%。预计到2020年，中国大数据产业市场规模将达到8228.81亿元。
一、大数据市场规模巨大
首先，中国大数据市场环比增长率较大。根据易观智库7月30号发布的中国大数据...
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 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...
How to get the first non-null value in Java?
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les2les2
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