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A comment on Java 8’s new Optional type doesn't solve anything. Parent comment

Re:Java 8’s new Optional type doesn't solve anything by kibwen on Monday October 26, 2015 @03:20PM (#10453755) 

  > much to my disappointment as I'm just learning rust
Then prepare to be disappointed by Haskell as well, where the equivalent function is called `fromJust`. :P

Both languages discourage the use of these constructs, but they exist for good reasons.

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Re:Java 8’s new Optional type doesn't solve anything by codygman on Monday October 26, 2015 @09:11PM (#10455608)
> Both languages discourage the use of these constructs, but they exist for good reasons.

Curious, what are your good reasons for fromJust in Haskell?

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