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Editorial Team
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Asked: 2026-06-15T17:34:50+00:00

In C#, you can initialize a list like so: var list = new List<int>

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In C#, you can initialize a list like so:

var list = new List<int> { obj1, obj2, obj3 };

I was expecting to do something similar in F# but keep getting errors:

let list =  { obj1, obj2, obj3 }

Is this possible in F#?

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  1. Editorial Team

    To create an (immutable) F# list, you can write:

    let list = [ obj1; obj2; obj3 ]

    There is a number of other options. You can create arrays by using [| .. |] instead of [ .. ] and you can also write sequence expressions that allow you to generate data – similarly to C# iterator methods. For more information, refer to:

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