I used to do Project Euler in college with Ruby during semesters when I had fewer coding classes, and this brings back memories!
Don't forget about irb and ri:
$ irb
irb(main):001:0> help 'Integer#**'
# or
$ ri 'Integer#**'
Both give:
= Integer#**
(from ruby core)
------------------------------------------------------------------------------
int ** numeric -> numeric_result
------------------------------------------------------------------------------
Raises int to the power of numeric, which may be negative or fractional. The
result may be an Integer, a Float, a Rational, or a complex number.
2 ** 3 #=> 8
2 ** -1 #=> (1/2)
2 ** 0.5 #=> 1.4142135623730951
(-1) ** 0.5 #=> (0.0+1.0i)
123456789 ** 2 #=> 15241578750190521
123456789 ** 1.2 #=> 5126464716.0993185
123456789 ** -2 #=> (1/15241578750190521)
Useful since google can be a little hard to use with special characters, like "**"
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I used to do Project Euler in college with Ruby during semesters when I had fewer coding classes, and this brings back memories!
Don't forget about
irb
andri
:Both give:
Useful since google can be a little hard to use with special characters, like "**"