FWIW +1
For me 'compact' means drop "empty space" and return data items in the same
order.
I'd like to keep names exactly 'compact/compactMap' instead of 'compacted/compactedMap', but OK to have the latter if
'compact' will not be accepted as 'terms of art'.
Vladimir.
On 21.11.2017 8:47, Thorsten Seitz via swift-evolution wrote:
+1
Am 20.11.2017 um 21:32 schrieb Jon Shier via swift-evolution <swift-evolution@swift.org
<mailto:swift-evolution@swift.org>>:
This is why I really like compact/compactMap.
On Nov 20, 2017, at 3:31 PM, John McCall via swift-evolution <swift-evolution@swift.org
<mailto:swift-evolution@swift.org>> wrote:
On Nov 20, 2017, at 12:22 PM, BJ Homer <bjho...@gmail.com
<mailto:bjho...@gmail.com>> wrote:
On Nov 20, 2017, at 10:09 AM, Drew Crawford via swift-evolution <swift-evolution@swift.org
<mailto:swift-evolution@swift.org>> wrote:
The typical case for this function in my code is the identity closure, that is
let a: [Int?] = ...
print(a.filterMap {$0})
filterMap is quite poor for this situation because *each* component in the term
is inaccurate:
filterMap is indeed an awkward name for this use case, just like flatMap is. In my experience, about half of my use
cases use the identity closure, and half actually make use of the closure in a meaningful way. I would support a
proposal to add something like Sequence.dropNils (actual name to be determined), and then we could let this proposal
target the non-identity-closure use case.
If the identity closure (i.e. "please remove the nils from this sequence") is a common use case, then I absolutely
agree that we should consider adding a specific operation for that, and that name might illuminate the right name for
the mapping version.
John.
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