Default arguments
In the previous recap exercise, you specified two positional arguments for the function you created. These arguments had no restrictions around them, meaning we could pass any data type to these arguments. On top of this, if we had not specified one of the arguments when calling the function, we would have received an error.
Default arguments are one way to change this. A default argument allows us to specify a default value if we do not pass that argument into the function call.
Define a function below that takes a positional argument and then a keyword argument with a default value.
Den här övningen är en del av kursen
Intermediate Julia
Övningsinstruktioner
- Define
my_profitand create a new, third argument calledfeeswhich is set to two by default. Call the function without passing a value forfees.
Interaktiv övning med praktiskt arbete
Testa den här övningen genom att slutföra den här exempelkoden.
# Define my_profit with two positional arguments and a default argument
function my_profit(previous_price, current_price, ____)
return current_price - previous_price - ____
end
my_profit(____, ____)