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Can't call forAll on int[]


Can't call forAll on int[]

By : user2952262
Date : November 19 2020, 12:41 AM
I hope this helps . You omitted some important text from between those two lines of code, and immediately after them.
Excerpted from "Effective C# (Covers C# 4.0): 50 Specific Ways to Improve Your C#" by Bill Wagner:
code :
int[] foo = (from n in Enumerable.Range(0, 100)
            select n * n).ToArray();
foo.ForAll((n) => Console.WriteLine(n.ToString()));
public static class Extensions
{
    public static void ForAll<T>(
        this IEnumerable<T> sequence,
        Action<T> action)
    {
        foreach (T item in sequence)
            action(item);
    }
}


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Why does my Parallel.ForAll call end up using a single thread?

Why does my Parallel.ForAll call end up using a single thread?


By : sid2010in
Date : March 29 2020, 07:55 AM
it should still fix some issue Your theory is probably correct although there is something called 'workstealing' that should counter this. I'm not sure why that doesn't work here. Are there many (>= dozens) large jobs at the outer ends or just a few?
Aside from shuffling your data you could use the overload for AsParallel() that accepts a custom Partioner. That would allow you to balance the work better.
Why is forall a. a not considered a subtype of Int while I can use an expression of type forall a. a anywhere one of typ

Why is forall a. a not considered a subtype of Int while I can use an expression of type forall a. a anywhere one of typ


By : morphy
Date : March 29 2020, 07:55 AM
Hope this helps In typed lambda calculi, we have the typing relation, usually denoted as : or in Haskell as ::. In general the relation is "many to many", so a type can contain multiple values and also a value can have many types.
In particular in polymorphic type systems a value can have multiple types. For example
code :
map :: (a -> b) -> [a] -> [b]
map :: (Int -> Int) -> [Int] -> [Int].
Ltac pattern matching: why does `forall x, ?P x` not match `forall x, x`?

Ltac pattern matching: why does `forall x, ?P x` not match `forall x, x`?


By : Shivani Atre
Date : March 29 2020, 07:55 AM
this one helps. As larsr explained, the pattern ?P x can only match a term that is syntactically an application, which does not cover the case you are considering. However, Ltac does provide features for the match you are looking for. As the user manual says:
code :
Goal (forall x : Prop, x) -> False.
intros H.
match goal with
| H : forall x : Prop, @?P x |- _ => idtac P
end.
Total function of type (forall n . Maybe (f n)) -> Maybe (forall n . (f n))

Total function of type (forall n . Maybe (f n)) -> Maybe (forall n . (f n))


By : David Blaylock
Date : March 29 2020, 07:55 AM
I wish this help you I coincidentally got it, just by playing trying to create a value that I could pass into your easyf function. I'm in trouble if you need an explanation though!! see comments below.
If first forall records exception occur, the second forall is not execute what to do?

If first forall records exception occur, the second forall is not execute what to do?


By : Reuben Cummins
Date : March 29 2020, 07:55 AM
This might help you You can put a BEGIN/END block around the first FORALL and handle the exception like this:
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