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Interviewing a Ruby developer, I learned that dealing with nil is common practice. So alerts are mostly useful, if we can point to a place where this has gone wrong.
14 lines
261 B
Ruby
14 lines
261 B
Ruby
def m
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puts "m"
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end
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def foo
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m # calls m above
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if false
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m = "0"
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m # reads local variable m
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else
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end
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m.strip # reads uninitialized local variable m, `nil`, and crashes
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m2 # undefined local variable or method 'm2' for main (NameError)
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end |