CODEWITHSUNDEEP
c#
tararonis
tararonis

Reputation: 23

Cannot implicitly convert type bool to System.Collections.Generic.List

Why this code work 

public static List<int> RemoveSmallest(List<int> numbers)   
{
    numbers.Remove(numbers.Min());
    return numbers;
}

instead of this. What the reason?

public static List<int> RemoveSmallest1(List<int> numbers)
{
    return numbers.Remove(numbers.Min());
}

Upvotes: 2

Views: 2351

Answers (2)

FaizanHussainRabbani
FaizanHussainRabbani

Reputation: 3439

List<T>.Remove() returns true if item is successfully removed; otherwise, false. This method also returns false if item was not found in the List<T>.

In the method List<int> RemoveSmallest(List<int> numbers), return type is List<int> not a bool, that is why 2nd approach gives an error.

If result is assigned to a variable like below:

var result = numbers.Remove(numbers.Min());

You can see result type as well:

enter image description here

Upvotes: 2

Tony B
Tony B

Reputation: 164

List.Remove() returns true or false, depending on whether it was successful, not a List.

https://msdn.microsoft.com/en-us/library/cd666k3e(v=vs.110).aspx

Upvotes: 6

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