Suggested by FredBouchery
Created on 2020-07-20
Difficulty: expert
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✅ { answer }: correct!
❌ { answer }: Wrong answer!
7.4 unpack a Traversable by keeping the iteration order, but it fails when the keys are strings, even if those strings are numeric. The right answer was "D".
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Poll
A : 42 - 42.6 % percent%
B : 24 - 13 % percent%
C : Parse error: syntax error, unexpected '...' (T_ELLIPSIS)
- 14.8 % percent%
✅ D : Fatal error: Uncaught Error: Cannot unpack Traversable with string keys
- 29.6 % percent%
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