Array of concatenated strings into Dictionary<int, int>

Question

I have an array of strings. Each string is two numbers separated with a "|".

How can I get this array of string into Dictionary<int,int> without looping through the array, splitting each string and adding to the dictionary.

Is there a better way?

Jodrell · Accepted Answer · 2014-11-27 16:48:20Z

4

simply,

var result = strings
    .Select(s => s.Split('|'))
    .ToDictionary(a => int.Parse(a[0]), a => int.Parse(a[1]));

if duplicates are allowed,

var result = strings
    .Select(s => s.Split('|'))
    .ToLookup(a => int.Parse(a[0]), a => int.Parse(a[1]));

answered Nov 27, 2014 at 16:37

Jodrell

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Comments

Selman Genç · Accepted Answer · 2014-11-27 16:32:48Z

1

You can use ToDictionary method:

var dictionary = stringArray.ToDictionary(x => x.Split('|')[0], x => x.Split('|')[1]);

But you should be aware that this will throw an exception if there are duplicate keys.

answered Nov 27, 2014 at 16:32

Selman Genç

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of course, it's extremely obvious when the answer is in front of you... thanks

why split it twice, its wastefull