Linq Extensions

A collection of reusable Linq extensions.

Chunk extensions

var list = new List<int>();
for (var i = 0; i < 21000; i++) list.Add(i);

var chunks = list.Chunks(1800);

chunks contains a list of 12 lists, which are each 1800 elements except for the last, which contains the 1200 remaining elements.

Group extensions

This extension groups elements based on a key definition and on a equality comparer.

var list = new List<string>()
{
    "Monkey",
    "Disco",
    "monkey",
    "banana",
    " Monkey",
    "Banana",
    "tree"
};
var grouped = list.Group(new CaseInsensitiveComparer());

Suppose that the CaseInsensitiveComparere compares on trimmed and lowercase values, than this results in a dictionary with 4 pairs:

• "Monkey": { "Monkey", "monkey", " Monkey" },
• "Disco": { "Disco" },
• "banana": { "banana", "Banana" },
• "tree": { "tree" }

Duplicate extensions

This extension finds duplicates in a list an collects all duplicates in a dictionary.

var list = new List<string>()
{
    "Monkey",
    "Disco",
    "monkey",
    "banana",
    " Monkey",
    "Banana",
    "tree"
};
var grouped = list.Group(new CaseInsensitiveComparer());

Suppose that the CaseInsensitiveComparere compares on trimmed and lowercase values, than this results in a dictionary with 2 pairs:

• "Monkey": { "Monkey", "monkey", " Monkey" },
• "banana": { "banana", "Banana" }