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In Ruby, is there a way to print out all the Global variables and Constants defined / predefined?
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Global Variable has global scope and accessible from anywhere in the program. Assigning to global variables from any point in the program has global implications. Global variable are always prefixed with a dollar sign ($).
Ruby Constants Constants defined within a class or module can be accessed from within that class or module, and those defined outside a class or module can be accessed globally.
What is a constant in Ruby? A constant is a type of variable which always starts with a capital letter. They can only be defined outside of methods, unless you use metaprogramming. Constants are used for values that aren't supposed to change, but Ruby doesn't prevent you from changing them.
The global_variables method returns an array of all global variable names. To get the names of all the constants defined in a module, send constants to the relevant module. For example, to get all the constants that you can access without specifying a namespace, use Object.constants.
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