Linq

.Net Tips — Use LINQ to create pairs of adjacent elements from a collection

Suppose you have an array of numbers, say, [1, 3, 5, 7, 9, …], and you want to pair each element up with its neighbour in the array, e.g. [[1, 3], [3, 5], [5, 7], [7, 9], …].

.Net Tips — Use LINQ to avoid nested loops

Admit it, we’ve all done it before, writing those nasty nested loops just so we can iterate through multiple lists to get some combination/permutation of the lists, e.g.:

1: for (int i = 0; i < 10; i++)

IList doesn’t extend IList

Looking at these two images snapped right off MSDN, what do you notice?

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that IEnumerable<T> extends IEnumerable but IList<T> doesn’t extend IList!?

LINQ — Some pitfalls to look out for

As great as LINQ is and how it has transformed the way we interact with data in .Net to the point many of us wonder how we had managed without it all this time! There are however, some pitfalls one can fall into, especially with the concept of delayed execution…