Functional-Programming-In-Javascript | Javascript approach to functional programming | Functional Programming library
kandi X-RAY | Functional-Programming-In-Javascript Summary
kandi X-RAY | Functional-Programming-In-Javascript Summary
Javascript approach to functional programming. Our book is still in portuguese but we will translate it later ️.
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QUESTION
I'm building a React app. I'm using Ramda to help me with functional programming.
If you want to see the full code, I also asked for help on StackExchange Code Review.
For Stack Overflow only one part is relevant, though.
How can you change a specific value from an object based on the object's other values using Ramda? I use mapObjIndexed
which in the process maps over all keys.
Context: I have on object representing a contact with several keys which are all strings. The object always has a key called contactDetails
. I want to calculate the value of contactDetails
dependant of the values of the object's tel
, bday
and email
keys.
If a contact looks like this before the function:
...ANSWER
Answered 2019-Apr-25 at 15:34You can use R.converge to merge the original object, and the result of R.pipe that generates the contactDetails
property. The pipe gets an array of values via R.props, filters out falsy values (undefined, empty strings, nulls, etc...), joins the the items with spaces, and wrap the value with an object with R.objOf.
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