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laginha87/not_nil_branching_failure.cr

Created May 2, 2018 18:15
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not_nil_branching_failure
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not_nil_branching_failure.cr
a = [1,2,3, nil]
if a[0]
puts a[0] + 1 # This doesn't work
end
puts a[0].not_nil! + 1 # This does though
@marksiemers
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The workaround for this is to use a temporary variable in the if statement:

a = [1,2,3, nil]

if temp = a[0]
  puts temp + 1 # This doesn't work
end

puts a[0].not_nil! + 1 # This does though

Not quite as easy as ruby, but once you get used to this, it starts to feel natural.

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