Why do anonymous types not have property setters?
var a = new { Text = "Hello" };
a.Text = "World"; //error
Anonymous type property setters
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1 Answers
Anonymous types are immutable by design.
Anonymous types are meant to hold values, and a type that represents a value should not be mutable.
Also, it would make them unreliable in a dictionary, as the hashcode could change after creation.
Many LINQ methods use Dictionaries, and, especially with delayed evaluation, LINQ with mutable types can lead to subtle mysterious bugs.
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