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support an effect hierarchy #321

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JonathanAldrich opened this issue Apr 24, 2019 · 0 comments
Open

support an effect hierarchy #321

JonathanAldrich opened this issue Apr 24, 2019 · 0 comments
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enhancement

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@JonathanAldrich
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Allow one effect to be defined as a sub-effect of another. For example, the f.write effect indicates a write on a particular file f. f.write should be a sub-effect of fileSystem.write, which represents a write to any file in the file system.

This mirrors how a FileNotFoundException is a subclass of IOException in Java.
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@JonathanAldrich