In Java, the potential of lazy evaluation is quite neglected (actually, at the language level, it’s pretty much limited to the implementation ofminimal evaluation) – advanced languages like Scala, for example,
However streams in Java 8 were created to work around feature that is a foundation ofLazySeq- lazy evaluation. Example above postpones all intermediate steps untilcollect()is called. WithLazySeqyou can safely skip.stream()and work directly on sequence: ...
He adds, “In other languages, you can’t use lambdas and streaming for big data projects if the language doesn’t support lazy evaluation.” Those lazy streams are what got Subramaniam hooked on functional programming in Java: “Laziness is the ultimate sophistication.” Dig deeper Functional p...
JStreams 1.1Contains Java 6 compatible streams that are immutable, lazy and chainable. Create a Stream from any sequence and transform it any way you like.For the C# developers: This library looks A LOT like Linq To Objects, the only difference being that the method names are more conventiona...
In this example, calling thebar()method requires thatfoobe non-null. Iffoois null then attempting to evaluate the second term of this expression would cause aNullPointerException. The Java lazy evaluation rules ensure that the second term is evaluated only when the first term is true. Logical...
2.1 The call of laziness Then, in the late '70s and early '80s, something new happened. A series of seminal publications ignited an explosion of interest in the idea of lazy (or non-strict, or call-by-need) functional languages as a vehicle for writing serious programs. Lazy evaluation ...
However streams in Java 8 were created to work around feature that is a foundation ofLazySeq- lazy evaluation. Example above postpones all intermediate steps untilcollect()is called. WithLazySeqyou can safely skip.stream()and work directly on sequence: ...
In this example, calling thebar()method requires thatfoobe non-null. Iffoois null then attempting to evaluate the second term of this expression would cause aNullPointerException. The Java lazy evaluation rules ensure that the second term is evaluated only when the first term is true. Logical...