LINQ - is SkipWhile broken?

Question

I\'m a bit surprised to find the results of the following code, where I simply want to remove all 3s from a sequence of ints:

var sequence = new [] { 1, 1, 2         


        

Answer 1

One solution you may find useful is using List "FindAll" function.

List <int> aggregator = new List<int> { 1, 2, 3, 3, 3, 4 };
List<int> result = aggregator.FindAll(b => b != 3);

Answer 2

var result = sequence.Where(i => i != 3);

Answer 3

The SkipWhile and TakeWhile operators skip or return elements from a sequence while a predicate function passes (returns True). The first element that doesn’t pass the predicate function ends the process of evaluation.

//Bypasses elements in a sequence as long as a specified condition is true and returns the remaining elements.

Answer 4

It's not broken. SkipWhile will only skip items in the beginning of the IEnumerable<T>. Once that condition isn't met it will happily take the rest of the elements. Other elements that later match it down the road won't be skipped.

int[] sequence = { 3, 3, 1, 1, 2, 3 };
var result = sequence.SkipWhile(i => i == 3); 
// Result: 1, 1, 2, 3

Answer 5

Ahmad already answered your question, but here's another option:

var result = from i in sequence where i != 3 select i;