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paulk pushed a commit to branch asf-site
in repository https://gitbox.apache.org/repos/asf/groovy-website.git
The following commit(s) were added to refs/heads/asf-site by this push:
new c60cd99 add GROOVY-11238, GROOVY-11306, GROOVY-10473
c60cd99 is described below
commit c60cd994eed2fc9acf3bf0e6df9bf002956c46e4
Author: Paul King <[email protected]>
AuthorDate: Wed Jun 4 11:02:46 2025 +1000
add GROOVY-11238, GROOVY-11306, GROOVY-10473
---
site/src/site/releasenotes/groovy-5.0.adoc | 47 ++++++++++++++++++++++++++++++
1 file changed, 47 insertions(+)
diff --git a/site/src/site/releasenotes/groovy-5.0.adoc
b/site/src/site/releasenotes/groovy-5.0.adoc
index f7805f8..01213dd 100644
--- a/site/src/site/releasenotes/groovy-5.0.adoc
+++ b/site/src/site/releasenotes/groovy-5.0.adoc
@@ -742,6 +742,32 @@ assert '❤️'.codePoints.size() == 2
assert new StringBuilder('FooBar').tap{ length -= 3 }.toString() == 'Foo'
----
+=== Additional Stream extensions
+
+Many of Groovy's shortcut notations (like the _plus_ and _spread-dot_
operators) are already supported for streams.
+Groovy 5 adds support for the `getAt(int)` and `getAt(IntRange)` index
operators
+as short-circuiting terminal stream operations:
+
+[source,groovy]
+----
+def nums = (10..20).stream()
+assert nums[5] == 15
+def letters = ('a'..'d').stream()
+assert letters[1..2] == 'b'..'c'
+----
+
+=== Additional BitSet extensions
+
+Groovy already supports numerous shortcut notations for the JDK's `BitSet`
class (like the `and` ("&"), `or` ("|"), `xor` ("^"), `bitwiseNegate` ("~"),
and index operators).
+Groovy 5 adds support for the `leftShift` ("<<"), `rightShift` (">>"), and
`rightShiftUnsigned` (">>>") operators:
+
+[source,groovy]
+----
+def fortyTwo = BitSet.valueOf(42)
+assert BitSet.valueOf(84) == fortyTwo << 1
+assert BitSet.valueOf(21) == fortyTwo >> 1
+----
+
[[Groovy5.0-javasyntax]]
== Java compatibility improvements
@@ -843,6 +869,27 @@ This improves various integration scenarios with mixed
Groovy and Java codebases
[[Groovy5.0-other]]
== Other improvements
+=== A new "logical implication" operator
+
+Groovy 5 introduces a new operator, `=\=>`, which is the _logical implication_
operator.
+This follows languages like Racket, Eiffel, and Dafny. We chose the "=\=>"
syntax
+to match what Dafny uses (and what has been proposed for Scala). It is
short-circuiting,
+like the existing equivalent, `!A || B`, but is often clearer in
+preconditions, postconditions, invariants and some other logical expressions:
+
+[source,groovy]
+----
+assert false ==> false
+assert false ==> true
+assert false ==> new RuntimeException()
+assert true ==> true
+assert !(true ==> false)
+----
+
+This operator corresponds to the `implies` extension method for `Boolean`
values, but
+is a not an overrideable operator, instead being expanded to its equivalent
form `!A || B`.
+Bear this in mind if using this operator in your Domain Specific Language
(DSL) code.
+
=== Support for `var` with multi-assignment
The `var` keyword can be used in combination with multi-assignment:
