The following code currently produces an error Expected type 'Map<String, Int>' but got 'Map<Nothing, Nothing>':
package test
@Pure fun f(a: Map<String, Int>)
pipeline myPipeline {
f({});
}
The issue here is that the type parameter K of Map is invariant. We currently have no way to indicate that K is completely free in {}
Desired solution
Add a new type (free type/unbound type/star type) that can only be computed, but not written directly in programs. It should be compatible to any type.
Related to #1135
Is your feature request related to a problem?
The following code currently produces an error
Expected type 'Map<String, Int>' but got 'Map<Nothing, Nothing>'
:The issue here is that the type parameter
K
ofMap
is invariant. We currently have no way to indicate thatK
is completely free in{}
Desired solution
Add a new type (free type/unbound type/star type) that can only be computed, but not written directly in programs. It should be compatible to any type.
Possible alternatives (optional)
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Additional Context (optional)
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