Hi Paul,
c1 contains one instance of TestClass, c2 contains another. Those two are not
equals, because they probably do not implement the equals method, and thus
comparison is done between object references in memory, and they are different,
being two different objects.
if you equals was implemented to compare the name of TestClass I'm pretty sure
it would work.
Best regards,
Søren Berg Glasius
GR8Conf Europe organizing team
GR8Conf ApS
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--- GR8Conf - Dedicated to the Groovy Ecosystem
From: Strachan, Paul <paul.strac...@det.nsw.edu.au>
Reply: users@groovy.apache.org <users@groovy.apache.org>
Date: February 8, 2016 at 15:12:06
To: users@groovy.apache.org <users@groovy.apache.org>
Subject: not sure about Collection.intersect
Groovy 2.4.4 / 2.4.5
Hi – I’d like to get a list of objects from collection A that exist in
collection B using intersect() but I’m getting no results:
def c1 = []// as Set
def c2 = []// as Set
c1 << new TestClass(name: 'mike')
c2 << new TestClass(name: 'mike')
println c1.contains(c2[0])
assert c1.intersect(c2).size() == 1
Output:
true
Assertion failed:
assert c1.intersect(c2).size() == 1
| | | | |
| [] | 0 false
| [sample.TestClass@333357]
[sample.TestClass@333357]
TestClass.groovy
package sample
import groovy.transform.EqualsAndHashCode
@EqualsAndHashCode(includes = 'name')
class TestClass {
String name
}
Is intersect only for simple types?
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