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ternary operator and parser

flocsy🤠
7 months ago

What is supposed to be the meaning of:

var a = b ? c : d ? e : f;

is it

var a = b ? c : (d ? e : f);

or

var a = (b ? c : d) ? e : f;

See also: forums.garmin.com/.../bug-nested-ternary-operator-returns-incorrect-value-in-sdk-8-0-0

  • 0 7 months ago

    As discussed in the other two bug reports about this:

    - var a = b ? c : (d ? e : f)

    => right-associativity for the ternary operator, which is the pre-8.0.0 behaviour and probably what most people expect. It's also what most C-style languages use, with PHP as a notable exception

    - var a = (b ? c : d) ? e : f

    => left-associativity for the ternary operator, which is the 8.0.0 behaviour and probably not what most people want. It's obviously a breaking change (and likely a bug).