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A comment on Object Oriented Programming is Inherently Harmful. Parent comment

Re:Object Oriented Programming is Inherently Harmful by noblethrasher on Sunday November 30, 2014 @08:02PM (#8678976)
Looks like you're correct; I just examined some F# code in LINQPad 4, and the IL has a bunch of `isinst` instructions to check the type at runtime, and no `callvirts` to the one pattern matching expression that I created.

https://gist.github.com/noblethrasher/af1b382fa6e0423bf8bd

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