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What is the List firstWhere


Dart | List | .firstWhere() - Codecademy

Returns the first element in a list that satisfies a given condition.

firstWhere method - Iterable class - dart:core library - Flutter API

The first element that satisfies the given predicate test. Iterates through elements and returns the first to satisfy test.

What is the List firstWhere() method in Dart? - Educative.io

Return value. The method firstWhere() iterates through the list and returns the first item to satisfy the given condition. The orElse() method ...

What is difference between firstWhere() and indexWhere() in Dart List

The difference is that firstWhere returns the element while indexWhere return the index of the matched test. Share.

firstWhere method - ListQueue class - dart:collection library - Dart API

API docs for the firstWhere method from the ListQueue class, for the Dart programming language.

What is map, firstWhere, where and any method in dart | by Rama

Note: What is an Iterable? An Iterable is a collection of elements that can be accessed sequentially. 2. firstWhere Returns the first ...

Collect.js firstWhere() Method - GeeksforGeeks

The firstWhere() method is used to return the first element from a collection with the given key and value pair.

Mastering Lists in Flutter: A Guide to Using firstWhere, fold, and ...

The firstWhere, fold, and insertAll methods are powerful tools that can help you work with lists more efficiently and effectively.

What is the ListQueue.firstWhere() method in Dart? - Educative.io

What is the ListQueue.firstWhere() method in Dart? ... ListQueue is a list based on Queue . Read more about ListQueue here. The firstWhere method ...

Null-aware .firstWhere, .singleWhere, .lastWhere in Dart's List?

I often use .firstWhere((E element) -> bool) -> E in my project. When porting it to support null safety I couldn't cleanly handle a scenario when an element is ...

Null Safety firstWhere - Corner Software

... firstWhere for got broken. The pattern is to search a collection and return. ... List testData = [1,2,3]; int val = testData.firstWhere ...

dart-lang/sdk - Null safety feedback: How to use firstWhere? - GitHub

A case where 'null' could be returned as an element of the list seems like more of a reason to make the return of 'firstWhere' nullable.

first(where:) | Apple Developer Documentation

Returns the first element of the sequence that satisfies the given predicate. iOS 8.0+iPadOS 8.0+Mac Catalyst 13.0+macOS 10.10+tvOS 9.0+visionOS 1.0+watchOS 2. ...

Dart | List | .indexWhere() - Codecademy

In Dart, the .indexWhere() method is used to find the index of the first element in a list that fulfills a given condition.

List - OCaml library

Same as List.map , but the function is applied to the index of the element as first argument (counting from 0), and the element itself as second argument ...

Enumerable.First Method (System.Linq) - Microsoft Learn

The First(IEnumerable) method throws an exception if source contains no elements. To instead return a default value when the source sequence ...

list.first function - RDocumentation

list.first: Find the first element that meets a condition · Description · Usage · Arguments · See Also · Examples.

Retrieve single elements | Kotlin Documentation

elementAt() is useful for collections that do not provide indexed access, or are not statically known to provide one. In case of List , it's ...

FIRST | Docs - Tines

FIRST. Returns the first element of an array. Syntax.

where, firstWhere -> Bad state: No element - Летучий программист

Before - There was no null-handling in the method "firstWhere" which throws an error "Bad State" once it returns "null" value.