But for those which need to be initialized to an empty array i do the following.
Ruby define constant dynamically.
What is a constant in ruby.
The algorithm for qualified constants goes like this.
Here var1 and var2 are constants.
The constant is looked up in the parent and its ancestors.
Make instance variable accessible through hash in ruby.
This will produce the following result value of first constant is 100 value of second constant is 200 ruby pseudo variables.
A ruby constant is used to store a value for the duration of a ruby program s execution.
In ruby 2 5 object is skipped if present among the ancestors.
It s not through hash it s array access operator.
The final way of defining a method dynamically in ruby is using def or define method.
Ruby contains a wide range of predefined variables.
To implement it you need to define methods.
They can only be defined outside of methods unless you use metaprogramming.
You cannot assign any value to these variables.
Kernel and basicobject are still checked though.
Using ruby i want to dynamically create class level instance variables inside corresponding getters.
A constant is a type of variable which always starts with a capital letter.
Constants are declared by beginning the variable name with a capital letter a common convention for declaring constants is to use uppercase letters for the entire name.
Def keys define here end def keys value define here end of course if you won t be using multiple keys to access an element you re fine with using just key instead of.
I have a class api that pulls objects from a third party api and builds them into objects that are subclasses of type apiobject.
Myconstant hello hello unlike other programming languages ruby.
They are special variables that have the appearance of local variables but behave like constants.
Every predefined variable has its own specification.
Let s define parent to be that qualifying class or module object that is billing in the example above.
Constants are used for values that aren t supposed to change but ruby doesn t prevent you from changing them.
For two of them i use attr reader.
