Default value for non existing keys in dictionaries

Question

Is there a way to return a default value if a key is not present in a dictionary?

For example, say that I have mydict = {'foo':1, 'bar': 2}. I want that if I call e.g. :echo mydict['apple'] I get a default value back, e.g. 0.

Answer 1

Use the get() function, see :h get()

let mydict = {'foo':1, 'bar': 2}
echo get(mydict, 'apple', 0)