Keep-alive for widgets in lazy lists #11010
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cc @cbracken for review |
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Still digging around the codebase to better understand context, but sending off first round of nitpicks.
LGTM for the change in general. Just a few nitpicks.
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Just ${keepAlive ? "keepAlive; " : ""}? Also, leading space that shouldn't be there.
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Nothing prevents it from being false, and I wouldn't want the toString to crash if it was false (which it would if I didn't do == true).
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added a test to verify that nobody regresses this
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Shorter: .forEach(_childManager.removeChild), or go for a local and a for-loop to avoid the forEach with a function literal.
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Why the .toList() here? Can removeChild indirectly modify _keepAliveBucket?
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Yes, removeChild very much modifies _keepAliveBucket, that's the purpose of the call in fact. :-)
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added a comment to that effect
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Is it worth adding the caveat that addRepaintBoundaries must not be null here?
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We do that on the constructors, by convention.
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Assert that addRepaintBoundaries is non-null.
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Since this is no longer a closure, you could kill off bool result and return the literals instead.
I suspect I've got some sort of obsession relating to shortening lines code though -- probably dates back to those one-liners in the back of Compute! magazine in the 80s.
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Updated per comments. Will land on green unless I hear otherwise. |
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