Is there any explicit statement about how indexing beyond the end of a collection should work? Does it extend the collection or just return null. Does a withDefault collection do something different?
In general, arrays and collections should work the same, so the statement in the working with arrays section is a good one. In the matter of indexing beyond the end of the array or collection, what is the shared behavior supposed to be: 1. return default value for type — aka null for reference and 0/false for primitives 2. throw out-of-bounds exception 3. something else? ________________________________ From: OCsite <o...@ocs.cz> Sent: Thursday, February 6, 2025 10:11 AM To: dev@groovy.apache.org <dev@groovy.apache.org> Subject: [EXT] Re: a bug or my fault? External Email: Use caution with links and attachments. The overall intention is that whether you are using an array or a collection, the code for working with the aggregate remains the same<https://urldefense.com/v3/__https://docs.groovy-lang.org/latest/html/documentation/*_working_with_arrays__;Iw!!GFN0sa3rsbfR8OLyAw!ezrONlzs3yG6lC6cFTDF2ASi61brEmoT2ix7QriL2Tg7vhHIhMXTwpPoYFbS77qNBafdycrQlnIZgRDxsA$>. In this particular case alas that good and noble intention does not quite work, and I wonder whether that is intentional (forgive the pun) or a mistake to be fixed in future, when there's nothing more pressing to do. On 6. 2. 2025, at 13:30, Søren Berg Glasius <soe...@glasius.dk> wrote: You assign 'b' as an Array, and arrays works differently than lists. Arrays are bound to their length, so 'a[2]' should report out of bounds as it is not 3 elements long, whereas a list b[2] would report null IMO it's working as intended. Den tors. 6. feb. 2025 kl. 10.20 skrev OCsite <o...@ocs.cz<mailto:o...@ocs.cz>>: Hi there, is this inconsistence intentional and the proper Groovy behaviour, or is that a bug and should I add a jira ticket? Thanks! === groovy:000> a=[1,2] ===> [1, 2] groovy:000> b=a as Object[] ===> [1, 2] groovy:000> a[2] ===> null groovy:000> b[2] ERROR java.lang.ArrayIndexOutOfBoundsException: Index 2 out of bounds for length 2 groovy:000> === -- Med venlig hilsen, Søren Berg Glasius Hedevej 1, Gl. Rye, 8680 Ry Mobile: +45 40 44 91 88 --- Press ESC once to quit - twice to save the changes.
