No Need for Temporary Collections, Yield Might Help ✅

Normally when we need to fetch the items from a collection we might create a Temporary List to hold the retrieved items and return. 🌀

Following is the C# code using the temporary list :

public List<int> GetValuesGreaterThan100 
(List<int> masterCollection)
 {
   List<int> tempResult = new List<int>();
   foreach (var value in masterCollection)
   {
     if (value > 100)
      tempResult.Add(value);
   }
   return tempResult;
 }

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To avoid the usage of this temporary collection you could choose to use the yield. 🔥

It will yield the result as and when the result set is enumerated.

Below is the code using the yield keyword :

public IEnumerable<int> GetValuesGreaterThan100(List<int> masterCollection)
 {
   foreach (var value in masterCollection)
   {
     if (value > 100)
      yield return value;
   }
 }

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#CSharp #Collections
@ProgrammingTip

You may be wondering why the Entity Framework team chose to call the method Remove rather than Delete, and for that matter, why they choose Add instead of Insert. 🤷🏿‍♂️

The names were chosen for consistency with other collections and sets in the .NET Framework.

Other collections all use the Add/Remove pair of methods to bring elements into and out of the collection.

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#EF #Collections
@ProgrammingTip