What about this use case?
```
fun SomeFloatRange....
# language-proposalsb
benleggiero
03/12/2017, 10:00 PMWhat about this use case?
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fun SomeFloatRange.contains(value: Float, !tolerance: Float): Boolean // Label is optional on "value", but required on "tolerance" so it's impossible to think you're passing, for instance, another range of values.
// Usage:
myFloatRange.contains(1.0f, 2.0f) // Compile failure: "tolerance" parameter not named