CODEWITHSUNDEEP
listfunctionhaskelldictionary
Oringal
Oringal

Reputation: 33

Using map with a function

I have 2 Functions 

accelerate :: Float -> [Particle] -> [Particle]
accelerateParticle :: Float -> Particle -> [Particle] -> Particle

and what I am trying to achieve is for every element in [Particle] apply the accelerateParticle function. The trouble I have run into is that the accelerateParticle function relies on using the original [particle] that is given initally by accelerate. I was thinking of using map like this

map (\particle -> accelerateParticle Float particle [Particle]) [Particle]

but I'm not very sure if this the correct format.

Upvotes: 3

Views: 99

Answers (1)

chi
chi

Reputation: 116174

You might be looking for this:

accelerate :: Float -> [Particle] -> [Particle]
accelerate x ps = map (\p -> accelerateParticle x p ps) ps

Note that the list of all particles ps is used both to map over it, and as a parameter of accelerateParticle.

Upvotes: 6

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