Comparison of the Ternary operator, Elvis operator, secure navigation operator, and OR logical operators

Question

Comparison with Ternary vs Elvis operator with safe navigation operator or logical operator in angular

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Ternary operator (operator? Obj: obj)

let gender = user.male ? "male" : "female";

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Elvis operator (? :)

let displayName = user.name ?: "";

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Safe Navigation Operator (?.)

let displayName = user.name ?. "";

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Logical or operators

let displayName = user.name || "";

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Above, all operators in the same way perform the same process. What are the advantages of the difference, and which are better and worse?

Answer 1

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Answer 2

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let gender = user.male ? "male" : "female";

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Answer 3

let gender = user.male ? "male" : "female";

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let gender = user.gender || "";

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Answer 4

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def gender = user.male ? "male" : "female"  //traditional ternary operator usage

def displayName = user.name ?: "Anonymous"  //more compact Elvis operator

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def user = User.find( "admin" )           //this might be null if 'admin' does not exist
def streetName = user?.address?.street    //streetName will be null if user or user.address is null - no NPE thrown

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