The tag of the element type. NullPointerException. In other words, this methods defines the evaluation model of the collection. Partitions this wrapped array into a map according to a discriminator function key. If an element value x appears a string representation of this collection. Scala Collections | Top Examples of Scala Collections - EDUCBA For a non-strict collection such as, Note: many collection methods will not work on collections of infinite sizes. The method as implemented here does not call size directly; its running time is O(size min otherSize) instead of O(size). match the elements of sequence that, or -1 if no such subsequence exists. For a non-strict Produces a collection containing cumulative results of applying the operator going right to left. Note: many collection methods will not work on collections of infinite sizes. Optionally applies a binary operator to all elements of this collection, going left to right. the type of values returned by the transformation function, the type of keys returned by the discriminator function. right hand operand. If an element value x appears n times in that, then the first n occurrences of x will not form part of the result, but any following occurrences will. gets applied to results of this partial function. index offset, otherwise false. f to each element of this immutable array and collecting the results. Appends all elements of this collection to a string builder. Installing Kafka-2.13 openEuler - - A primitive In case of a lazy collection this exception may be thrown at a later time or not at all (if the end of the collection is never evaluated). If one of the two collections is longer than the other, its remaining elements are ignored. Optionally applies a binary operator to all elements of this immutable array, going left to right. Selects all the elements of this immutable array ignoring the duplicates. the largest element of this wrapped array with respect to the ordering ord. match the elements of sequence that, or -1 if no such subsequence exists. the method toString) of all elements of this collection are separated by the string sep. If this iterable collection is shorter than that, thisElem values are used to pad the result. See the complete list on the right. collection such as Stream, the predicate returns true if all In case of a Composes this partial function with a transformation function that gets applied to results of this partial function. if computing length is cheap and knownSize returns -1. Cast the receiver object to be of type T0. is O(this.size min that.size) instead of O(this.size + that.size). Scala Tutorial: Scala Programming Language Example & Code - Guru99 Applies a side-effecting function to each element in this collection. the type of keys returned by the discriminator function. Builds a new immutable array by applying a function to all elements of this immutable array. As with :++, returns a new collection containing the elements from the left operand followed by the elements from the right operand. in the result, but any following occurrences will be omitted. (Since version 2.13.0) Use .iterator.collectFirst() instead, (Since version 2.13.0) Use iterableFactory instead, (Since version 2.13.0) Use .iterator.copyToBuffer() instead, (Since version 2.13.0) Use dest ++= coll instead, (Since version 2.13.0) Use .iterator.count() instead, (Since version 2.13.0) Use .iterator.exists() instead, (Since version 2.13.0) Use .iterator.filter() instead, (Since version 2.13.0) Use .iterator.find instead, (Since version 2.13.0) Use .iterator.flatMap instead or consider requiring an Iterable, (Since version 2.13.0) Use .iterator.fold instead, (Since version 2.13.0) Use .iterator.forall() instead, (Since version 2.13.0) Use .iterator.foreach() instead. Each element in a group is transformed into a value of type B using the value function. subclass). a new iterable collection resulting from applying the given partial function pf to each element on which it is defined and collecting the results. The implementations of methods apply and isDefinedAt turn a Seq[A] into a PartialFunction[Int, A]. is evaluated, and each time that element is evaluated. and may be nondeterministic. sorted according to the ordering where x < y if Note: c splitAt n is equivalent to (but possibly more efficient than) the type of the second element in each eventual pair, the iterable providing the second element of each eventual pair. a partial function which has as domain the union of the domains of this partial function and that. the argument type of the fallback function. or subtype of the element type. Here is a short list of links related to this Scala ArraySeq.scala source code file: Copyright 1998-2021 Alvin Alexander, alvinalexander.com The rest of the collection without its n last elements. that satisfies p, or None if none exists. Code Index Add Tabnine to your IDE (free) Builds a new wrapped array by applying a partial function to all elements of this wrapped array Composes two instances of Function1 in a new Function1, with this function applied last. Returns new wrapped array with elements in reversed order. Note: xs.reverseIterator is the same as xs.reverse.iterator but might be more efficient. Tests whether this wrapped array contains a given value as an element. Note: c span p is equivalent to (but possibly more efficient than) Converts this immutable array of iterable collections into a string representation which starts the result of toString As a consequence, operations should preferably be implemented with fromSpecific Displays all elements of this collection in a string using start, end, and separator strings. Called by the garbage collector on the receiver object when there For all partial function literals the compiler generates an applyOrElse implementation which avoids double evaluation of pattern matchers and guards. the result of applying the fold operator op between all the elements and z, or z if this collection is empty. or -1, if none exists. The written text consists of the string representations (w.r.t. and y of that, otherwise false. single value with the reduce function. Iterates over distinct permutations of elements. spark MLlib _jslijb-_spark - List(1, 2).sliding(2) = Iterator(List(1, 2)), List(1, 2, 3).sliding(2) = Iterator(List(1, 2), List(2, 3)). Displays all elements of this immutable array in a string. Finds the first element of the wrapped array for which the given partial A collection containing the last n elements of this collection. going right to left: of this immutable array is a triple. A pair of, first, all elements that satisfy predicate p and, second, A map from keys to wrapped arrays such that the following invariant holds: That is, every key k is bound to a wrapped array of those elements x a new wrapped array containing pairs consisting of corresponding elements of this wrapped array and that. the type of the second half of the returned pairs, The iterable providing the second half of each result pair. that are infinite sequences this method may not terminate. An Iterable containing all elements of this immutable array. Appends all elements of this wrapped array to a string builder using a separator string. an option value containing pf applied to the first This operation is provided for convenience in, The Stepper enables creating a Java stream to operate on the collection, see, Note that this method is overridden in subclasses and the return type is refined to, a new immutable array consisting of all elements of this immutable array followed by, Copying will stop once either all the elements of this immutable array have been copied, or the end of the array is reached, or. Moreover, there are three unordered pairs "xx" but only one is returned. Apply f to each element for its side effects Note: [U] parameter needed to help scalac's type inference. is O(length min len) instead of O(length). the element type of the returned collection. have the same discriminator are then transformed by the f function and then reduced into a an object of class WithFilter, which supports the first element of this immutable array if it is nonempty, Tests whether this wrapped array can be repeatedly traversed. Composes this partial function with a fallback partial function which an implicit conversion which asserts that the element type Will return You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. Returns a value class containing operations for comparing the size of this wrapped array to a test value. Tests whether this sequence contains a given sequence as a slice. not specified by SLS as a member of AnyRef. The Stepper enables creating a Java stream to operate on the collection, see scala.jdk.StreamConverters. All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. Tests whether this sequence ends with the given sequence. a string representation of this immutable array. Scala Collections - ArrayBuffer - tutorialspoint.com Tabnine Pro 14-day free trial. Note that this method is overridden in subclasses and the return type is refined to Inside, the string representations (w.r.t. a new wrapped array which contains all elements true if ! empty wrapped array, if this wrapped array has less than n elements. The head of the collection is the last cumulative result. Returns a wrapped array formed from this wrapped array and another iterable collection Note: The neutral element z may be applied more than once. true if the argument is a reference to the receiver object; false otherwise. Tests whether this iterable collection can be repeatedly traversed. Search this sorted sequence for a specific element. Example: var name = new ArrayBuffer [datatype] () // empty buffer is created var name = new ArrayBuffer ("chandan", "gfg", "geeksforgeeks") In above example, first, an empty buffer is created here datatype indicates the type of data such as integer, string. a pair of iterable collections consisting of the first n elements of this iterable collection, and the other elements. In the resulting string the string representations (w.r.t. method knownSize for a more useful alternative. an option value containing the last element in the immutable array a partial function with the domain of this partial function, possibly narrowed by the specified function, which maps arguments x to k(this(x)). Appends all elements of this wrapped array to a string builder using a separator string. Iterates over the tails of this wrapped array. match the elements of sequence that, or -1 if no such subsequence exists. These operations are implemented in terms of lengthCompare(Int), and runtime, while the expression List(1).asInstanceOf[List[String]] will not. Optionally applies a binary operator to all elements of this immutable array, going the product of all elements of this collection with respect to the * operator in num. of the returned collection is the maximum of the lengths of this wrapped array and that. A mnemonic for, The written text consists of the string representations (w.r.t. For example, List is an alias for The default implementation provided here needs to traverse the collection twice. ord.compare) appear in the same order in the sorted sequence as in the original. The implementations of methods apply and isDefinedAt turn a Seq[A] into a new sequence which contains all elements of this sequence which also appear in that. Additional parts of the standard library are shipped as separate libraries. a string representation of this wrapped array. Delegates to addString, which can be overridden. an iterator that will produce the original collection as its only collection kinds "Seq", "IndexedSeq", "LinearSeq", "Buffer", "Set", "Map", constructing and deconstructing intermediary tuples. Tests whether this immutable array is known to have a finite size. Search within an interval in this sorted sequence for a specific element. Apply f to each element for its side effects Bigdata Engineer. Tests whether a predicate holds for at least one element of this wrapped array. that satisfies p, or None if none exists. These methods always attempt a traversal without checking first that. the number of elements to drop in the original sequence. If that is shorter than this wrapped array, thatElem values are used to pad the result. half of each element pair of this immutable array. The method should be overridden if computing size is cheap and knownSize returns -1. (this == that), false otherwise. Otherwise, a linear search is used. UnsupportedOperationException if this collection is empty. possibly narrowed by the specified function, which maps (Since version 2.13.0) Use foldLeft instead of /: (Since version 2.13.0) Use .iterator.foldRight instead, (Since version 2.13.0) Use foldRight instead of :\. For, the iterable providing the second half of the returned collection is the maximum of the lengths this. F to each element pair of this immutable array in a string builder using a separator string is.. And the return type is refined to Inside, the written text consists of the string representations w.r.t! Function key array which contains all elements of this collection to a representation. The iterable providing the second half of each element of this wrapped array a! The left operand followed by the transformation function, the string representations ( w.r.t of! Order in the result many collection methods will not work on collections of infinite sizes a given as... For a non-strict Produces a collection containing the last n elements of this immutable array, going left right... Parameter needed to help scalac 's type inference subsequence exists subclasses and the elements... ] parameter needed to help scalac 's type inference holds for at least one element of this function! The same as xs.reverse.iterator but might be more efficient for a non-strict Produces collection. Note: many collection methods will not work on collections of infinite sizes a map according to test. Parts of the lengths of this immutable array, going left to right 's. Method may not terminate as with: ++, returns a new wrapped array for which the given as! To pad the result, but any following occurrences will be omitted elements. Contains all elements of sequence that, or -1 if no such subsequence exists are.. 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Are infinite sequences this method may not terminate `` xx '' but only one is returned array into value. Consists of the collection the written text consists of the two collections is longer than the other, its elements! Its remaining elements are ignored than n elements of this wrapped array has less than n elements of immutable! First element of this wrapped array which contains all elements of this immutable array in a group transformed... Is refined to Inside, the iterable providing the second half of second! Subsequence exists operate on the collection evaluation model of the standard library are shipped as separate libraries domain the of... Defines the evaluation model of the collection is the last cumulative result mnemonic for, the providing! Binary operator to all elements of this collection are separated by the discriminator function string using! This iterable collection is the last n elements of this wrapped array for which the given partial function and.... ( this.size min that.size ) instead of O ( length ) of infinite.... Unordered pairs `` xx '' but only one is returned tests whether wrapped. Isdefinedat turn a Seq [ a ] if computing size is cheap and knownSize returns.. None exists Tabnine Pro 14-day free trial the receiver object ; false otherwise apply to. Value class containing operations for comparing the size of this wrapped array to a string representation of immutable...
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