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How to type a hashtable whose keys can only be members of an enum?
How can I represent an 'Enum' in Python?How do I enumerate an enum in C#?How to get an enum value from a string value in Java?How to loop through all enum values in C#?Comparing Java enum members: == or equals()?Merging hashtables in PowerShell: how?Enum as key of HashTableHow to enumerate an enum with String type?How to enforce enum member as argument type in typescriptHow can I write a generic function that uses the type of an enum member instead of the enum itself?
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In Typescript I can add a type for a hashtable foo whose keys are members of an enum Flag with foo: [key in Flag]: any. However, this requires that foo contains a key-value pair for every member of the Flag enum. What if I just want it to be partial - to say that the keys in foo can only be members of Flag, but I'm not expecting every member of Flag?
enums hashtable
asked Mar 27 at 23:02
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
add a comment |
In Typescript I can add a type for a hashtable foo whose keys are members of an enum Flag with foo: [key in Flag]: any. However, this requires that foo contains a key-value pair for every member of the Flag enum. What if I just want it to be partial - to say that the keys in foo can only be members of Flag, but I'm not expecting every member of Flag?
enums hashtable
asked Mar 27 at 23:02
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
add a comment |
In Typescript I can add a type for a hashtable foo whose keys are members of an enum Flag with foo: [key in Flag]: any. However, this requires that foo contains a key-value pair for every member of the Flag enum. What if I just want it to be partial - to say that the keys in foo can only be members of Flag, but I'm not expecting every member of Flag?
enums hashtable
asked Mar 27 at 23:02
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
In Typescript I can add a type for a hashtable foo whose keys are members of an enum Flag with foo: [key in Flag]: any. However, this requires that foo contains a key-value pair for every member of the Flag enum. What if I just want it to be partial - to say that the keys in foo can only be members of Flag, but I'm not expecting every member of Flag?
enums hashtable
enums hashtable
asked Mar 27 at 23:02
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
asked Mar 27 at 23:02
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
asked Mar 27 at 23:02
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
asked Mar 27 at 23:02
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
asked Mar 27 at 23:02
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
8095 silver badges17 bronze badges
add a comment |
add a comment |
1 Answer
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Add a question mark to mark the keys as optional:
foo: [key in Flag]?: any
answered Mar 27 at 23:06
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
add a comment |
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Add a question mark to mark the keys as optional:
foo: [key in Flag]?: any
answered Mar 27 at 23:06
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
add a comment |
Add a question mark to mark the keys as optional:
foo: [key in Flag]?: any
answered Mar 27 at 23:06
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
add a comment |
Add a question mark to mark the keys as optional:
foo: [key in Flag]?: any
answered Mar 27 at 23:06
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
Add a question mark to mark the keys as optional:
foo: [key in Flag]?: any
answered Mar 27 at 23:06
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
answered Mar 27 at 23:06
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
answered Mar 27 at 23:06
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
answered Mar 27 at 23:06
Patrick FinniganPatrick Finnigan
8095 silver badges17 bronze badges
8095 silver badges17 bronze badges
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