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Ruby Ruby Objects and Classes Build a Bank Account Class Part 2: Transactions, credits, and debits

Richard McGrath
Richard McGrath
5,597 Points
Posted by Richard McGrath
Richard McGrath
5,597 Points

In the debit method how come a "-" next to amount is turning that number to a negative?

Is adding a '-' to a variable in ruby a method to quickly convert a number to a negative? I.E. "-test" is really variable named "test" but with "-" to turn it negative?

2 Answers

Abirbhav Goswami
Abirbhav Goswami
15,450 Points
Abirbhav Goswami
Abirbhav Goswami
15,450 Points

Yup. You got that correct. You cannot however declare variables starting with -.

#This is okay:
my_variable = 10
puts "Negative of my variable is #{-my_variable}"

#This isn't
-my_variable = -10