DelayList

enum DelayList[a: Type]Source

case ENilcase ECons(a, DelayList[a])case LCons(a, Lazy[DelayList[a]])case LList(Lazy[DelayList[a]])

Instances

instance Applicative[DelayList]Source

instance Eq[DelayList[a]] with Eq[a]Source

instance Filterable[DelayList]Source

instance Foldable[DelayList]Source

instance ForEach[DelayList[a]]Source

instance Functor[DelayList]Source

instance Iterable[DelayList[a]]Source

instance Monad[DelayList]Source

instance MonadZero[DelayList]Source

instance Monoid[DelayList[a]]Source

instance Order[DelayList[a]] with Order[a]Source

instance SemiGroup[DelayList[a]]Source

instance ToString[DelayList[a]] with ToString[a]Source

instance Traversable[DelayList]Source

instance UnorderedFoldable[DelayList]Source

instance Witherable[DelayList]Source

Definitions

@Experimental @LazyWhenPure

def ap(f: DelayList[a -> b \ ef], l: DelayList[a]): DelayList[b] \ ef§ Source

Apply every function from f to every argument from l and return a list with all results. For f = f1, f2, ... and l = x1, x2, ... the results appear in the order f1(x1), f1(x2), ..., f2(x1), f2(x2), ....

Whether the i-th function in f (fi) is applied eagerly or lazily depends on its purity:

If fi is pure then it is applied lazily (i.e. the tail of l is not forced).
If fi is impure then it is applied eagerly (i.e. the entire list l is forced).

Note that this implies that ALL functions in f must be pure to avoid forcing l.

@Experimental @Lazy

def append(l1: DelayList[a], l2: DelayList[a]): DelayList[a]§ Source

Returns l2 appended to l1.

Does not force the tail of l1.

@Experimental

def count(f: a -> Bool \ ef, l: DelayList[a]): Int32 \ ef§ Source

Returns the number of elements in l that satisfy the predicate f.

Forces the entire list l.

@Experimental @Lazy

def drop(n: Int32, l: DelayList[a]): DelayList[a]§ Source

Returns l without the first n elements.

Returns ENil if n > length(l). Returns l if n < 1.

Does not force the tail of l.

@Experimental @LazyWhenPure

def dropWhile(f: a -> Bool \ ef, l: DelayList[a]): DelayList[a] \ ef§ Source

Returns l without the longest prefix that satisfies the predicate f.

Whether f is applied eagerly or lazily depends on its purity:

If f is pure then it is applied lazily (i.e. the tail is not forced).
If f is impure then it is applied eagerly (i.e. the tail is forced until the first element that satisfies f).

@Experimental

def empty(): DelayList[a]§ Source

Returns an empty DelayList.

@Experimental

def exists(f: a -> Bool \ ef, l: DelayList[a]): Bool \ ef§ Source

Returns true if and only if at least one element in l satisfies the predicate f.

Returns false if l is empty.

Forces elements of l until the predicate f is satisfied.

@Experimental @LazyWhenPure

def filter(f: a -> Bool \ ef, l: DelayList[a]): DelayList[a] \ ef§ Source

Returns a DelayList with every element in l that satisfies the predicate f.

Whether f is applied eagerly or lazily depends on its purity:

If f is pure then it is applied lazily (i.e. the tail is not forced).
If f is impure then it is applied eagerly (i.e. the entire list l is forced).

@Experimental @LazyWhenPure

def filterMap(f: a -> Option[b] \ ef, l: DelayList[a]): DelayList[b] \ ef§ Source

Collects the results of applying the partial function f to every element in l.

Whether f is applied eagerly or lazily depends on its purity:

If f is pure then it is applied lazily (i.e. the tail is not forced).
If f is impure then it is applied eagerly (i.e. the entire list l is forced).

@Experimental

def findLeft(f: a -> Bool \ ef, l: DelayList[a]): Option[a] \ ef§ Source

Optionally returns the first element of l that satisfies the predicate f when searching from left to right.

Forces elements of l until the predicate f is satisfied.

@Experimental

def findMap(f: a -> Option[b] \ ef, l: DelayList[a]): Option[b] \ ef§ Source

Returns the first non-None result of applying the partial function f to each element of l.

Returns None if every element f(x) of l is None.

Forces elements of l until f(x) returns Some(v).

@Experimental

def findRight(f: a -> Bool \ ef, l: DelayList[a]): Option[a] \ ef§ Source

Optionally returns the first element of l that satisfies the predicate f when searching from right to left.

Forces the entire list l.

@Experimental @LazyWhenPure

def flatMap(f: a -> DelayList[b] \ ef, l: DelayList[a]): DelayList[b] \ ef§ Source

Returns the result of applying f to every element in l and concatenating the results.

Whether f is applied eagerly or lazily depends on its purity:

If f is pure then it is applied lazily (i.e. the tail is not forced).
If f is impure then it is applied eagerly (i.e. the entire list l is forced).

@Experimental @Lazy

def flatten(l: DelayList[DelayList[a]]): DelayList[a]§ Source

Returns the concatenation of the elements in l.

Does not force the tail of l.

@Experimental

def foldLeft(f: b -> (a -> b \ ef), s: b, l: DelayList[a]): b \ ef§ Source

Applies f to a start value s and all elements in l going from left to right.

That is, the result is of the form: f(...f(f(s, x1), x2)..., xn).

Forces the entire list l.

def foldMap(f: a -> b \ ef, l: DelayList[a]): b \ ef with Monoid[b]§ Source

Returns the result of mapping each element and combining the results.

@Experimental

def foldRight(f: a -> (b -> b \ ef), s: b, l: DelayList[a]): b \ ef§ Source

Applies f to a start value s and all elements in l going from right to left.

That is, the result is of the form: f(x1, ...f(xn-1, f(xn, s))...).

Forces the entire list l.

@Experimental

def forAll(f: a -> Bool \ ef, l: DelayList[a]): Bool \ ef§ Source

Returns true if and only if all elements in l satisfy the predicate f.

Returns true if l is empty.

Forces elements in l until the first element that does not satisfy the predicate f (inclusive).

@Experimental

def forEach(f: a -> Unit \ ef, l: DelayList[a]): Unit \ ef§ Source

Applies f to every element of l.

Forces the entire list l.

@Experimental

def forEachWithIndex(f: Int32 -> (a -> Unit \ ef), l: DelayList[a]): Unit \ ef§ Source

Applies f to every element of l along with that element's index.

Forces the entire list l.

@Experimental

def head(l: DelayList[a]): Option[a]§ Source

Returns Some(x) if x is the first element of l.

Returns None if l is empty.

Does not force the tail of l.

@Experimental

def init(l: DelayList[a]): Option[DelayList[a]]§ Source

Returns Some(xs) where xs is l without the last element.

Returns None if l is empty.

Forces the entire list l.

@Experimental @Lazy

def intercalate(l1: DelayList[a], l2: DelayList[DelayList[a]]): DelayList[a]§ Source

Returns the concatenation of the elements in l2 with the elements of l1 inserted between every two adjacent elements of l2.

That is, returns l2.1 :: l1.1 ... l1.n :: l2.2 :: ... :: l2.n-1 :: l1.1 :: ... :: l1.n :: l2.n :: ENil.

Does not force the tail of l2.

@Experimental @Lazy

def intersperse(x: a, l: DelayList[a]): DelayList[a]§ Source

Returns l with x inserted between every two adjacent elements.

Does not force the tail of l.

@Experimental

def isEmpty(l: DelayList[a]): Bool§ Source

Returns true if and only if l is the empty DelayList, i.e. ENil.

Does not force the tail of l.

@Experimental @Lazy

def iterator(rc: Region[r], l: DelayList[a]): Iterator[a, r, r] \ r§ Source

Returns l as an Iterator.

Does not force any elements of the list.

@Experimental

def join(sep: String, l: DelayList[a]): String with ToString[a]§ Source

Returns the concatenation of the string representation of each element in l with sep inserted between each element.

Forces the entire list l.

@Experimental

def joinWith(f: a -> String \ ef, sep: String, l: DelayList[a]): String \ ef§ Source

Returns the concatenation of the string representation of each element in l according to f with sep inserted between each element.

Forces the entire list l.

@Experimental

def last(l: DelayList[a]): Option[a]§ Source

Returns Some(x) if x is the last element of l.

Returns None if l is empty.

Forces the entire list l.

@Experimental

def length(l: DelayList[a]): Int32§ Source

Returns the number of elements in l.

Forces the entire list l.

@Experimental @LazyWhenPure

def map(f: a -> b \ ef, l: DelayList[a]): DelayList[b] \ ef§ Source

Returns the result of applying f to every element in l.

Whether f is applied eagerly or lazily depends on its purity:

If f is pure then it is applied lazily (i.e. the tail is not forced).
If f is impure then it is applied eagerly (i.e. the entire list l is forced).

@Experimental @LazyWhenPure

def mapWithIndex(f: Int32 -> (a -> b \ ef), l: DelayList[a]): DelayList[b] \ ef§ Source

Returns the result of applying f to every element in l along with that element's index.

That is, the result is of the form: f(0, x0) :: f(1, x1) :: ....

Whether f is applied eagerly or lazily depends on its purity:

If f is pure then it is applied lazily (i.e. the tail is not forced).
If f is impure then it is applied eagerly (i.e. the entire list l is forced).

@Experimental

def maximum(l: DelayList[a]): Option[a] with Order[a]§ Source

Optionally finds the largest element of l according to the Order on a.

Returns None if l is empty.

Forces the entire list l.

@Experimental

def maximumBy(cmp: a -> (a -> Comparison), l: DelayList[a]): Option[a]§ Source

Optionally finds the largest element of l according to the given comparator cmp.

Returns None if l is empty.

Forces the entire list l.

@Experimental

def memberOf(x: a, l: DelayList[a]): Bool with Eq[a]§ Source

Returns true if and only if l contains the element x.

Forces elements until x is found.

@Experimental

def minimum(l: DelayList[a]): Option[a] with Order[a]§ Source

Optionally finds the smallest element of l according to the Order on a.

Returns None if l is empty.

Forces the entire list l.

@Experimental

def minimumBy(cmp: a -> (a -> Comparison), l: DelayList[a]): Option[a]§ Source

Optionally finds the smallest element of l according to the given comparator cmp.

Returns None if l is empty.

Forces the entire list l.

@Experimental

def nonEmpty(l: DelayList[a]): Bool§ Source

Returns true if and only if l is a non-empty DelayList.

Does not force the tail of l.

@Experimental

def partition(f: a -> Bool \ ef, l: DelayList[a]): (DelayList[a], DelayList[a]) \ ef§ Source

Returns a pair of lists (l1, l2) where:

l1 contains all elements of l that satisfy the predicate f.
l2 contains all elements of l that DO NOT satisfy the predicate f.

Forces the entire list l.

@Experimental @Lazy

def range(b: Int32, e: Int32): DelayList[Int32]§ Source

Returns a DelayList of all integers between b (inclusive) and e (exclusive).

Returns an empty DelayList if b >= e.

@Experimental

def reduceLeft(f: a -> (a -> a \ ef), l: DelayList[a]): Option[a] \ ef§ Source

Applies f to all elements in l going from left to right until a single value v is obtained. Returns Some(v).

That is, the result is of the form: Some(f(...f(f(x1, x2), x3)..., xn))

Returns None if l is empty.

Forces the entire list l.

@Experimental

def reduceRight(f: a -> (a -> a \ ef), l: DelayList[a]): Option[a] \ ef§ Source

Applies f to all elements in l going from right to left until a single value v is obtained. Returns Some(v).

That is, the result is of the form: Some(f(x1, ...f(xn-2, f(xn-1, xn))...))

Returns None if l is empty.

Forces the entire list l.

@Experimental @Lazy

def repeat(x: a): DelayList[a]§ Source

Returns an infinite DelayList of repeating xs.

@Experimental @Lazy

def replace(src: { src = a }, dst: { dst = a }, l: DelayList[a]): DelayList[a] with Eq[a]§ Source

Returns l with every occurrence of src replaced by dst.

Does not force the tail of l.

@Experimental @Lazy

def reverse(l: DelayList[a]): DelayList[a]§ Source

Reverses the list l.

Does not force the tail of l.

@Experimental

def sequence(l: DelayList[m[a]]): m[DelayList[a]] with Applicative[m]§ Source

Returns the result of running all the actions in the DelayList l.

def shuffle(l: DelayList[a]): DelayList[a] \ Shuffle§ Source

Shuffles l using the Fisher–Yates shuffle.

@Experimental

def singleton(x: a): DelayList[a]§ Source

Return the singleton list with element x.

@Experimental

def size(l: DelayList[a]): Int32§ Source

Returns the number of elements in l.

Forces the entire list l.

@Experimental @LazyWhenPure

def span(f: a -> Bool \ ef, l: DelayList[a]): (DelayList[a], DelayList[a]) \ ef§ Source

Returns a pair of lists (l1, l2) where:

l1 is the longest prefix of l that satisfies the predicate f.
l2 is the remainder of l.

Whether f is applied eagerly or lazily depends on its purity:

If f is pure then it is applied lazily (i.e. the tail is not forced).
If f is impure then it is applied eagerly (i.e. the entire list l is forced).

@Experimental @Lazy

def startFrom(n: Int32): DelayList[Int32]§ Source

Returns an infinite sequence of integers starting from and including n.

@Experimental

def sum(l: DelayList[Int32]): Int32§ Source

Returns the sum of all elements in the DelayList l.

Forces the entire list l.

@Experimental

def sumWith(f: a -> Int32 \ ef, l: DelayList[a]): Int32 \ ef§ Source

Returns the sum of all elements in the DelayList l according to the function f.

Forces the entire list l.

@Experimental

def tail(l: DelayList[a]): Option[DelayList[a]]§ Source

Returns Some(xs) where xs is l without the first element.

Returns None if l is empty.

Forces l until the first element is found, but does not force the tail.

@Experimental @Lazy

def take(n: Int32, l: DelayList[a]): DelayList[a]§ Source

Returns the first n elements of l.

Does not force the tail of l.

@Experimental @LazyWhenPure

def takeWhile(f: a -> Bool \ ef, l: DelayList[a]): DelayList[a] \ ef§ Source

Returns the longest prefix of l that satisfies the predicate f.

Whether f is applied eagerly or lazily depends on its purity:

If f is pure then it is applied lazily (i.e. the tail is not forced).
If f is impure then it is applied eagerly (i.e. the tail is forced until the first element that satisfies f).

@Experimental

def toArray(rc: Region[r], l: DelayList[a]): Array[a, r] \ r§ Source

Returns l as an Array.

Forces the entire list l.

@Experimental

def toList(l: DelayList[a]): List[a]§ Source

Returns l as a List.

Forces the entire list l.

@Experimental

def toMap(l: DelayList[(a, b)]): Map[a, b] with Order[a]§ Source

Returns the association list l as a map.

If l contains multiple mappings with the same key, toMap does not make any guarantees about which mapping will be in the resulting map.

Forces the entire list l.

@Experimental

def toSet(l: DelayList[a]): Set[a] with Order[a]§ Source

Returns l as a Set.

Forces the entire list l.

@Experimental

def toString(l: DelayList[a]): String with ToString[a]§ Source

Returns a string representation of l.

Forces the entire list l.

@Experimental

def toVector(l: DelayList[a]): Vector[a]§ Source

Returns l as a Vector.

Forces the entire list l.

@Experimental

def traverse(f: a -> m[b] \ ef, l: DelayList[a]): m[DelayList[b]] \ ef with Applicative[m]§ Source

Returns the result of applying the applicative mapping function f to all the elements of the DelayList l.

@Experimental @Lazy

def zip(l1: DelayList[a], l2: DelayList[b]): DelayList[(a, b)]§ Source

Returns a list where the element at index i is (a, b) where a is the element at index i in l1 and b is the element at index i in l2.

If either l1 or l2 is depleted, then no further elements are added to the resulting list.

Does not force the tail of either l1 or l2.

@Experimental @LazyWhenPure

def zipWith(f: a -> (b -> c \ ef), l1: DelayList[a], l2: DelayList[b]): DelayList[c] \ ef§ Source

Returns a list where the element at index i is f(a, b) where a is the element at index i in l1 and b is the element at index i in l2.

If either l1 or l2 is depleted, then no further elements are added to the resulting list.

Whether f is applied eagerly or lazily depends on its purity:

If f is pure then it is applied lazily (i.e. the tails are not forced).
If f is impure then it is applied eagerly (i.e. both lists l1 and l2 are forced).

def zipWithIndex(l: DelayList[a]): DelayList[(Int32, a)]§ Source

Returns a DelayList where each element e is mapped to (i, e) where i is the index of e.

Does not force the tail of l.