Channel 9 Forums - Coffeehouse - web api IEnumerable? http://mschnlnine.vo.llnwd.net/d1/Dev/App_Themes/C9/images/feedimage.png Channel 9 Forums - Coffeehouse - web api IEnumerable? http://channel9.msdn.com/Forums Channel 9 keeps you up to date with the latest news and behind the scenes info from Microsoft that developers love to keep up with. From LINQ to SilverLight – Watch videos and hear about all the cool technologies coming and the people behind them. http://channel9.msdn.com/Forums en Wed, 19 Jun 2013 07:23:11 GMT Wed, 19 Jun 2013 07:23:11 GMT Rev9 10 -10 -1 Coffeehouse - web api IEnumerable? Trying to find out which is better with WebAPI and why.

[HttpGet]
public IEnumerable<Invoice> GetInvoices()
{
...
}

OR

 

[HttpGet]
public Invoice[] GetInvoices()
{
...
}

 

Thanks.

]]> http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/36dca2d6c63a42a79359a142013e26f1#36dca2d6c63a42a79359a142013e26f1 Thu, 10 Jan 2013 19:18:21 GMT http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/36dca2d6c63a42a79359a142013e26f1#36dca2d6c63a42a79359a142013e26f1 wsdotnet 10 http://channel9.msdn.com/Niners/wsdotnet/Discussions/RSS Coffeehouse - web api IEnumerable? Better for what?

]]> http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/c5c2acc791c0474daabca1420142a269#c5c2acc791c0474daabca1420142a269 Thu, 10 Jan 2013 19:34:40 GMT http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/c5c2acc791c0474daabca1420142a269#c5c2acc791c0474daabca1420142a269 cbae 10 http://channel9.msdn.com/Niners/cbae/Discussions/RSS Coffeehouse - web api IEnumerable? @wsdotnet: Neither ... use IQueryable.  http://codebetter.com/johnvpetersen/2012/03/22/bringing-odata-to-your-webapi-just-use-iqueryable/

If for some reason you won't, IEnumerable is preferable because it's the interface for all synchronous collections in  .NET, including arrays.

 

]]> http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/478afc32494c446e8adba142015029c6#478afc32494c446e8adba142015029c6 Thu, 10 Jan 2013 20:23:55 GMT http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/478afc32494c446e8adba142015029c6#478afc32494c446e8adba142015029c6 Auxon 10 http://channel9.msdn.com/Niners/FuncOfT/Discussions/RSS Coffeehouse - web api IEnumerable? @FuncOfT: It would be preferable for regular APIs, but I don't think it really matters much in a WebApi. You don't know what's on the other end of the wire and have no control over what local data type they use in any event, so API design considerations here matter little. There's no difference in the resultant wire transfer, performance or functionality. The only reason to prefer IEnumerable<T> to an array would be if your underlying data wasn't an array to begin with... which we can't determine from the question.

But yeah, IQueryable would be preferred.

]]> http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/47eedb16c7df432690c8a1420159d4fe#47eedb16c7df432690c8a1420159d4fe Thu, 10 Jan 2013 20:59:08 GMT http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/47eedb16c7df432690c8a1420159d4fe#47eedb16c7df432690c8a1420159d4fe William Kempf 10 http://channel9.msdn.com/Niners/wkempf/Discussions/RSS Coffeehouse - web api IEnumerable? @cbae: performance.

]]> http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/495ab2d4895d49f1bbd6a14201669d7f#495ab2d4895d49f1bbd6a14201669d7f Thu, 10 Jan 2013 21:45:40 GMT http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/495ab2d4895d49f1bbd6a14201669d7f#495ab2d4895d49f1bbd6a14201669d7f wsdotnet 10 http://channel9.msdn.com/Niners/wsdotnet/Discussions/RSS Coffeehouse - web api IEnumerable?

, wsdotnet wrote

@cbae: performance.

Both are exactly the same for performance, because the dominating effect is the cost of the network between your customer and your website.

]]> http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/df6cd8c607e44ebfa253a1420168a2e0#df6cd8c607e44ebfa253a1420168a2e0 Thu, 10 Jan 2013 21:53:02 GMT http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/df6cd8c607e44ebfa253a1420168a2e0#df6cd8c607e44ebfa253a1420168a2e0 evildictaitor 10 http://channel9.msdn.com/Niners/evildictaitor/Discussions/RSS Coffeehouse - web api IEnumerable?

, evildictait​or wrote

*snip*

Both are exactly the same for performance

Approximately exactly.

]]> http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/d77c786ad88e41f0acd8a14201725f2c#d77c786ad88e41f0acd8a14201725f2c Thu, 10 Jan 2013 22:28:28 GMT http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/d77c786ad88e41f0acd8a14201725f2c#d77c786ad88e41f0acd8a14201725f2c Bass 10 http://channel9.msdn.com/Niners/Bass/Discussions/RSS Coffeehouse - web api IEnumerable?

, Bass wrote

*snip*

Approximately exactly.

Within a few cycles, unlike the hundreds of millions of cycles you'll lose if a single TCP packet en-route gets dropped.

]]> http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/de9aa902b1764c85aaa0a14300a03d10#de9aa902b1764c85aaa0a14300a03d10 Fri, 11 Jan 2013 09:43:24 GMT http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/de9aa902b1764c85aaa0a14300a03d10#de9aa902b1764c85aaa0a14300a03d10 evildictaitor 10 http://channel9.msdn.com/Niners/evildictaitor/Discussions/RSS Coffeehouse - web api IEnumerable? It doesn't matter for performance or features.  But you might want to pick the array form just because it takes less space on the screen.

]]> http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/b95515c6fc914d74b4c4a1440024ab28#b95515c6fc914d74b4c4a1440024ab28 Sat, 12 Jan 2013 02:13:30 GMT http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/b95515c6fc914d74b4c4a1440024ab28#b95515c6fc914d74b4c4a1440024ab28 warren 10 http://channel9.msdn.com/Niners/warren/Discussions/RSS Coffeehouse - web api IEnumerable? @warren:

It's also easier to pronounce.

]]> http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/fba2c3ef6964407daac5a1440033f440#fba2c3ef6964407daac5a1440033f440 Sat, 12 Jan 2013 03:09:09 GMT http://channel9.msdn.com/Forums/Coffeehouse/web-api-IEnumerable/fba2c3ef6964407daac5a1440033f440#fba2c3ef6964407daac5a1440033f440 Bass 10 http://channel9.msdn.com/Niners/Bass/Discussions/RSS