Results module lacks functionality #389

Description

Result module lacks the functionality provided by Option module. Missing stuff:

• Result.getOrElse
• Result.getOrElseF
• Result.getOrFail
• Result.getOrRaise
• Result.either : ('a->'c )-> ('b->'c) -> Result<'a,'b'> -> 'c

I took the names from Option module, but wouldn't mind coming with something better.

Repro steps

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Expected behavior

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Actual behavior

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Known workarounds

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Related information

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