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I have an enum defined like this:
export enum someEnum { None = <any>'', value1 = <any>'value1', value2 = <any>'value2', value3 = <any>'value3' } For example, I want to check "value4" key exists in an enum. I should get false as value4 is not defined on the enum.
I tried if (someEnum['value4']) but got an error:
Element implicitly has an 'any' type because index expression is not of type 'number'.
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Enum. IsDefined is a check used to determine whether the values exist in the enumeration before they are used in your code. This method returns a bool value, where a true indicates that the enumeration value is defined in this enumeration and false indicates that it is not. The Enum .
To check if a value exists in an enum in Python: Use a list comprehension to get a list of all of the enum's values. Use the in operator to check if the value is present in the list. The in operator will return True if the value is in the list.
Since C# doesn't support enum with string value, in this blog post, we'll look at alternatives and examples that you can use in code to make your life easier. The most popular string enum alternatives are: Use a public static readonly string. Custom Enumeration Class.
You could use the in operator:
if ('value4' in someEnum) { // ... } If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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