Tuple2<T1, T2> class

Tuple2<T1, T2> is a type that contains a value of type T1 and a value of type T2.

Used to avoid creating a custom class that contains two different types or to return two values from one function.

Inheritance

• Object
• HKT2<_Tuple2HKT, T1, T2>
• Tuple2

Mixed in types

• Functor2<_Tuple2HKT, T1, T2>
• Extend2<_Tuple2HKT, T1, T2>
• Foldable2<_Tuple2HKT, T1, T2>

Constructors

Tuple2(T1 _value1, T2 _value2)

Build a Tuple2 given its first and second values.

const

Properties

first → T1

Get first value inside the Tuple.

no setter

hashCode → int

The hash code for this object.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

second → T2

Get second value inside the Tuple.

no setter

Methods

all(bool predicate(T2 a)) → bool

Return the result of calling predicate on the second value of the Tuple2.

override

any(bool predicate(T2 a)) → bool

Return the result of calling predicate on the second value of the Tuple2.

override

apply<A>(A f(T1 first, T2 second)) → A

Return result of calling f given value1 and value2 from this Tuple.

bimap<C, D>(C mFirst(T1 a), D mSecond(T2 b)) → Tuple2<C, D>

Change type of both values of the Tuple.

concatenate(Monoid<T2> monoid) → T2

Combine the second value of Tuple2 using monoid.

override

copyWith({T1? value1, T2? value2}) → Tuple2<T1, T2>

Create a copy of this Tuple by changing value1 and/or value2.

duplicate() → Tuple2<T1, Tuple2<T1, T2>>

Wrap this Tuple2 inside another Tuple2.

override

extend<Z>(Z f(Tuple2<T1, T2> t)) → Tuple2<T1, Z>

Convert the second value of the Tuple2 from T2 to Z using f.

override

extendFirst<Z>(Z f(Tuple2<T1, T2> t)) → Tuple2<Z, T2>

Convert the first value of the Tuple2 from T1 to Z using f.

foldLeft<C>(C b, C f(C b, T2 a)) → C

Return value of type C by calling f with b and the second value of the Tuple2.

override

foldLeftFirst<C>(C b, C f(C b, T1 a)) → C

Return value of type C by calling f with b and the first value of the Tuple2.

foldLeftFirstWithIndex<C>(C c, C f(int i, C c, T1 b)) → C

Return value of type C by calling f with b and the first value of the Tuple2.

foldLeftWithIndex<C>(C c, C f(int i, C acc, T2 b)) → C

Return value of type C by calling f with b and the second value of the Tuple2.

override

foldMap<C>(Monoid<C> monoid, C f(T2 a)) → C

Return value of type C by applying f on monoid.

override

foldMapFirst<C>(Monoid<C> monoid, C f(T1 a)) → C

Return value of type C by applying f on monoid.

foldRight<C>(C b, C f(C acc, T2 a)) → C

Return value of type C by calling f with b and the second value of the Tuple2.

override

foldRightFirst<C>(C b, C f(C acc, T1 a)) → C

Return value of type C by calling f with b and the first value of the Tuple2.

foldRightFirstWithIndex<C>(C c, C f(int i, C c, T1 b)) → C

Return value of type C by calling f with b and the first value of the Tuple2.

foldRightWithIndex<C>(C c, C f(int i, C acc, T2 b)) → C

Return value of type C by calling f with b and the second value of the Tuple2.

override

length() → int

Returns 1.

override

map<C>(C f(T2 a)) → Tuple2<T1, C>

Change type of second value of the Tuple from T2 to C using f.

override

mapBoth<C, D>(Tuple2<C, D> f(T1 first, T2 second)) → Tuple2<C, D>

Change type of both values of the Tuple using f.

mapFirst<TN>(TN f(T1 first)) → Tuple2<TN, T2>

Change type of first value of the Tuple from T1 to TN using f.

mapSecond<TN>(TN f(T2 second)) → Tuple2<T1, TN>

Change type of second value of the Tuple from T2 to TN using f.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

swap() → Tuple2<T2, T1>

Swap types T1 and T2 of Tuple2.

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override