Questions tagged [forall]
Haskell extension and keyword used to define rank-n and existentially quantified types or to use scoped type variables
forall
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How to embed Multiple parameter types in a single type container with a class constraint?
I would like to create a Haskell class which perform operations on multiples data types. For an example, I would like to add a value on all elements of a Map structure and retrieve a new Map.
To do ...
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Need validation of my pl/sql code and need forall version of mine
Team I have a table ace_1
STATUS CHARGE_1 CHARGE_2
N 5 20
Y 7 25
N 9 30
N 11 35
Y 13 40
Need to INSERT INTO table ace_2 two rows when STATUS=N for each CHARGE_1/ACTION=CREATE & ...
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how to patch multiple selections checkbox gallery inside a gallery in powerapps
need your help please...
I have i created a form in powerapps but without using form control. i used a gallery control instead. so i am using forall and patch function to write back all the answers to ...
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Is there a function for “forall” in python?
I am trying to write a code that finds the multiplicative identity of a finite ring with addition modulo n and multiplication modulo n as the operations. Basically it should return that element e such ...
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Nested If function is not returning neither True or False
I am trying to use the ForAll function in Power FX to iterate over a collection called colMatSolicitados. Within the ForAll function, you are using an If function to check if a certain condition is ...
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What does `forall` mean in this specific signature? (definition of Task in a build system in Haskell)
I am reading the paper Build systems à la carte by A. Mokhov, N. Mitchell and S. Peyton Jones.
One of the first concepts they define is that of a Task. It has type
newtype Task c k v = Task ( forall f....
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How to understand the universal quantification in Yoneda's natural isomorphism?
While learning about the Yoneda lemma, I came across the following encoding of the underlying natural isomorphism in Haskell:
forward :: Functor f => (forall r . (a -> r) -> f r) -> f a
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Oracle PLSQL extend type with date abs timestamp
I have the following code, which seems to be working. Is there a way I can add a date, timestamp to the type definition? If so, how would reference the columns so I can INSERT data into them. For ...
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What does the `forall a -> b` syntax mean?
In GHCi, the kind of FUN is displayed like this:
λ> :k FUN
FUN :: forall (n :: Multiplicity) -> * -> * -> *
At first, I thought this was a roundabout way of saying
FUN :: Multiplicity -&...
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How can we use constraint in every individual element in an array in cplex?
Why is my forall loop not working to apply an constraint to all the individual values stored in my variable. For eg: if there are 100 values stored under a variable k, how can I apply the constraint ...
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`forall {..}` in GHC 9
This is valid syntax in GHC 9. What do the {..} mean (as distinct from (..) which GHC 8.10 requires here)?
ign :: forall {f :: Type -> Type} {p}. Applicative f => p -> f ()
ign _ = pure ()
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What is this GHC feature called? `forall` in type definitions
I learned that you can redefine ContT from transformers such that the r type parameter is made implicit (and may be specified explicitly using TypeApplications), viz.:
-- | Same as `ContT` but with ...
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Write a forall constraint in CPLEX, indexing over a union of variables
I'm modelling a routing problem in CPLEX opl. I am struggling to implement a certain constraint in CPLEX, which sums a decision variable X over a set of indexes j, and this ∀i ∈ V, where V = C ⋃ S.
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Prolog: Check if list of tuples is a function
I want to check, if a list L of tuples (x1,y1) has the function property:
∀(x1,y1),(x2,y2) ∈ L (x1=x2 🠒 y1 = y2)
I tried to solve it with the following predicate:
m_Function(L) :-
((member(M1, L)...
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How do I use the forall loop to check if all rows have the same number of columns in a Vector in Scala?
So I have a generic vector: 1:vec: Vector[Vector[T]]
Now I wanna use the require and forall to check if the length of each row is the same.
This is how far I've gotten:
2:require(vec.forall(row => ...
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