.Net, Programming

Use of yield in C#

rencontre des hommes riches Normally, when we need to fetch the items from a collection we might create a temporary list to hold the retrieved items and return. But the use of yield, we can get a collection without the use of the temporary collection.
Following is the simple example to retrieve list using return a temporary list.

source public List<int> GetValuesGreaterThan50(List<int> Collection) { List<int> templist = new List<int>(); foreach (var value in Collection) { if (value > 50) templist.Add(value); } return templist; }

citas de amor gratis sin registro Here partnervermittlung bettina großenlüder tmplist is used to store values that we want to return but we have a better and faster way to get the result by use of yield keyword so no need for temporary collections.

http://highschool.isq.edu.mx/cr45/8047/assets/js/4353 public IEnumerable<int> GetValuesGreaterThan50(List<int> Collection) { foreach (var value in Collection) { if (value > 50) yield return value; } }

http://tennisclubpaimpol.fr/bisese/7581 Yield returns http://bilgiwebs.com/?plemjaw=citas-para-adultos-en-quito&34b=a0 Enumerable value as a result set so we can use it in LINQ query to get result easily. The yield keyword effectively creates a lazy enumeration over collection items that can be much more efficient. For example, if your foreach loop iterates over just the first 50 items of 1 million items, then that’s all yield returns, and you didn’t build up a collection of 1 million items internally first. Likewise, you will want to use yield with http://www.judithschlosser.ch/?ityrew=piattaforma-di-prova-per-opzioni-digitali&570=e3 IEnumerable return values in your own programming scenarios to achieve the same efficiencies.


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