learn-fp | learn-by-doing course/tutorial | Functional Programming library
kandi X-RAY | learn-fp Summary
kandi X-RAY | learn-fp Summary
learn-by-doing course/tutorial for functional programming on scala
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QUESTION
I was trying to solve exercises in https://github.com/dehun/learn-fp/blob/master/src/test/scala/learnfp/monad/WriterTest.scala. Currently I am not able to understand how the below code works, especially line numbers 20, 22, and 24. WriterString
does not have a map
method. Also, what is the use of _
?
ANSWER
Answered 2018-Jul-04 at 12:28If you desugar for-comprehension (using intellij for example, or by hand) you will get
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