HasProperty

Tests whether an object has a specific property defined.

Signature

HasProperty(object obj, string key)

Parameters

• obj (object): The object to check.
• key (string): The property name to look for.

Returns

• boolean: true if the property exists (even if its value is null).

Description

Checks for property existence using ContainsKey. Unlike Exists, which checks whether a value is non-null, HasProperty returns true even when the property’s value is null.

Examples

var user = { "name": "Alice", "age": null }

var a = HasProperty(user, "name")
# a = true

var b = HasProperty(user, "age")
# b = true (property exists, even though value is null)

var c = HasProperty(user, "email")
# c = false