Joined January 2013
·
Posted to
How to make homework more fun, MATLAB to Ruby
over 1 year
ago
They keep the same precedence when you do that. You just traded the underlying method.
>> 2 * 2 ** 3 # ** has higher precedence
=> 16
>> 2 * 2 ^ 3
=> 7
>> 2 * (2 ^ 3) # ^ has lower precedence
=> 2
class Fixnum
alias_method :pow, :**
alias_method :**, :^
alias_method :^, :pow
end
>> 2 * 2 ** 3 # ** still has higher precedence
=> 2
>> (2 * 2) ** 3
=> 7
>> 2 * 2 ^ 3 # ^ still have lower precedence
=> 64
>> 2 * (2 ^ 3)
=> 16
Still don't know how (or if) you can change precedence of an operator
Posted to
How to make homework more fun, MATLAB to Ruby
over 1 year
ago
Yeah, I wanted to add that as an alias that for **
, however ^
has a lesser operator precedence than **
. So if you want to use ^
, you have to wrap it in parens just about everywhere it is used. I figured that it would just be better to use **
so that you wouldn't have that somewhat confusing problem.
That is, unless anyone knows how to change the precedence of an operator.
Achievements
389 Karma
15,083 Total ProTip Views

24PullRequests Participant
Sent at least one pull request during the first 24 days of December 2014

Forked
Have a project valued enough to be forked by someone else

T-Rex
Have at least one original repo where C is the dominant language

Honey Badger
Have at least one original Node.js-specific repo

Nephila Komaci
Have at least one original repos where PHP is the dominant language

Charity
Fork and commit to someone's open source project in need

Walrus
The walrus is no stranger to variety. Use at least 4 different languages throughout all your repos

Epidexipteryx
Have at least one original repo where C++ is the dominant language

Mongoose 3
Have at least three original repos where Ruby is the dominant language

Mongoose
Have at least one original repo where Ruby is the dominant language
Thanks. I was just fooling around with this, but that will actually help me out when I get sick of writing MATLAB functions in Ruby or when performance is intolerable.