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Lambdas and Streams

Lambdas, concurrency, date/time, etc

Best this year

Why doesn't reduce() throw a Runtime exception on an empty stream instead of returning the identity?

42 replies 2

puzzling. Using partitioningBy() on an IntStream gives compile error

45 replies

How does one debug a stream pipeline?

21 replies 7 4

what does it mean that "method reference needs an explicit target-type"?

29 replies

Can you add to a stream? Otherwise, of what use is an empty stream...

21 replies 2

Lambdas and Streams

why the need to use reduce in Java 8 ?

13 replies 1

How does one implement and call one's own Functional Interface?

15 replies

What is the purpose of a combiner - isn't the accumulator sufficient?

11 replies 2

Lambdas passed in to a method

11 replies

Trying to understand how the datatypes are determined in this reduce()

4 replies 1

Not understanding MapToObj

9 replies

What's a Predicate?

4 replies

HeadFirst BeatBox chapter 15 page 530 - where is the sequencer stop labda being handled?

5 replies

Runnable lambda - odd how it compiles...

3 replies

Comparator with lambda

7 replies

What do you call something that calls a Consumer?

6 replies

Clarification needed on Modern Java in Action by Raoul-Gabriel Urma?

2 replies

More »
Lambdas and Streams Forum at JavaRanch

Lambdas passed in to a method

1 month ago 11 replies

puzzling. Using partitioningBy() on an IntStream gives compile error

2 months ago 45 replies [ 1, 2 ]

Runnable lambda - odd how it compiles...

2 months ago 3 replies

What's a Predicate?

4 months ago 4 replies

HeadFirst BeatBox chapter 15 page 530 - where is the sequencer stop labda being handled?

5 months ago 5 replies

Comparator with lambda

6 months ago 7 replies

Not understanding MapToObj

6 months ago 9 replies

Clarification needed on Modern Java in Action by Raoul-Gabriel Urma?

6 months ago 2 replies

Lambdas and Streams

why the need to use reduce in Java 8 ?

6 months ago 13 replies 1

Why doesn't reduce() throw a Runtime exception on an empty stream instead of returning the identity?

8 months ago 42 replies [ 1, 2 ] 2

How does one debug a stream pipeline?

9 months ago 21 replies 7 4

What do you call something that calls a Consumer?

10 months ago 6 replies

what does it mean that "method reference needs an explicit target-type"?

10 months ago 29 replies

Trying to understand how the datatypes are determined in this reduce()

10 months ago 4 replies 1

What is the purpose of a combiner - isn't the accumulator sufficient?

10 months ago 11 replies 2

Can you add to a stream? Otherwise, of what use is an empty stream...

11 months ago 21 replies 2

How does one implement and call one's own Functional Interface?

11 months ago 15 replies

Java in General

How can i handle to get result from completableFuture without block ?

11 months ago 7 replies

Before Java8 did functional programming not exist in Java or was possible by passing anonymous class

1 year ago 28 replies

Reduce Stream to Contain Last Element Only

1 year ago 9 replies 1

'forEach(java.util.function.Consumer)' in 'java.lang.Iterable' cannot be applied

1 year ago 29 replies 1

Why are methods like forEach called higher order function instead of higher order methods?

1 year ago 22 replies 2

Functional Interfaces P435 OCP Java SE17 Developer Study Guide

1 year ago 4 replies

Lambdas and Streams

PostIncrement operation vs PreIncrement operation in infinite stream generation.

1 year ago 2 replies

Programmer Certification (OCPJP)

Concurrency and Streams and parallel(). Is this the correct understanding?

1 year ago 31 replies

don't understand how final is applied in this case

1 year ago 6 replies

Programmer Certification (OCPJP)

Sybex 829 | Chapter 10, page 542 allMatch on infinite Stream

1 year ago 4 replies

TDD and Functional Programming

1 year ago 6 replies

* Winners: Functional Programming in Java: Harness the Power of Streams and Lambda Expression

1 year ago 2 replies 1

Functional Programming in Java: Streams performance

1 year ago 2 replies

* Welcome Venkat Subramaniam

1 year ago 18 replies 1

Java vs Scala vs Kotlin vs Groovy vs Clojure as a Functional Programming language on the JVM

1 year ago 4 replies

When to avoid functional programming?

1 year ago 3 replies

Functional Programming in Java : Write-only Lambdas?

1 year ago 3 replies

Functional Programming in Java -- second edition?

1 year ago 2 replies
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Lambdas and Streams

Best this year

Why doesn't reduce() throw a Runtime exception on an empty stream instead of returning the identity?

puzzling. Using partitioningBy() on an IntStream gives compile error

How does one debug a stream pipeline?

what does it mean that "method reference needs an explicit target-type"?

Can you add to a stream? Otherwise, of what use is an empty stream...

why the need to use reduce in Java 8 ?

How does one implement and call one's own Functional Interface?

What is the purpose of a combiner - isn't the accumulator sufficient?

Lambdas passed in to a method

Trying to understand how the datatypes are determined in this reduce()

Not understanding MapToObj

What's a Predicate?

HeadFirst BeatBox chapter 15 page 530 - where is the sequencer stop labda being handled?

Runnable lambda - odd how it compiles...

Comparator with lambda

What do you call something that calls a Consumer?

Clarification needed on Modern Java in Action by Raoul-Gabriel Urma?

Lambdas and Streams Forum at JavaRanch

Lambdas passed in to a method

puzzling. Using partitioningBy() on an IntStream gives compile error

Runnable lambda - odd how it compiles...

What's a Predicate?

HeadFirst BeatBox chapter 15 page 530 - where is the sequencer stop labda being handled?

Comparator with lambda

Not understanding MapToObj

Clarification needed on Modern Java in Action by Raoul-Gabriel Urma?

why the need to use reduce in Java 8 ?

Why doesn't reduce() throw a Runtime exception on an empty stream instead of returning the identity?

How does one debug a stream pipeline?

What do you call something that calls a Consumer?

what does it mean that "method reference needs an explicit target-type"?

Trying to understand how the datatypes are determined in this reduce()

What is the purpose of a combiner - isn't the accumulator sufficient?

Can you add to a stream? Otherwise, of what use is an empty stream...

How does one implement and call one's own Functional Interface?

How can i handle to get result from completableFuture without block ?

Before Java8 did functional programming not exist in Java or was possible by passing anonymous class

Reduce Stream to Contain Last Element Only

'forEach(java.util.function.Consumer)' in 'java.lang.Iterable' cannot be applied

Why are methods like forEach called higher order function instead of higher order methods?

Functional Interfaces P435 OCP Java SE17 Developer Study Guide

PostIncrement operation vs PreIncrement operation in infinite stream generation.

Concurrency and Streams and parallel(). Is this the correct understanding?

don't understand how final is applied in this case

Sybex 829 | Chapter 10, page 542 allMatch on infinite Stream

TDD and Functional Programming

* Winners: Functional Programming in Java: Harness the Power of Streams and Lambda Expression

Functional Programming in Java: Streams performance

* Welcome Venkat Subramaniam

Java vs Scala vs Kotlin vs Groovy vs Clojure as a Functional Programming language on the JVM

When to avoid functional programming?

Functional Programming in Java : Write-only Lambdas?

Functional Programming in Java -- second edition?

Java