This makes sense, no?

| dictionary |
dictionary := WeakValueDictionary with: 'hello' -> nil copy.
"Smalltalk garbageCollect."
r:={
dictionary values includes: nil.
dictionary at: 'hello'.
dictionary at: 'hello' ifAbsent: [ 'absent' ].
dictionary at: 'hello' ifAbsentPut: [ 'put' ].
}.
r

and I get this anyway when GCing and puttting #x as value

Inline image 1

Maybe checking for emptiness first is needed before going for values include:

Phil


On Mon, Feb 20, 2017 at 11:18 PM, Martin Dias <tinchodias@gmail.com> wrote:
Hi. The answer of:

| dictionary |
dictionary := WeakValueDictionary with: 'hello' -> 'world' copy.
Smalltalk garbageCollect.
{
dictionary values includes: nil.
dictionary at: 'hello'.
dictionary at: 'hello' ifAbsent: [ 'absent' ].
dictionary at: 'hello' ifAbsentPut: [ 'put' ].
}��

is:

#(true nil nil nil)


Bug or feature? shouldn't the value be considered as absent instead of present (and nil).

cheers,
Mart��n