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I would like to "cap" a number in Ruby (on Rails).
For instance, I have, as a result of a function, a float but I need an int.
I have very specific instructions, here are some examples:
If I get 1.5 I want 2 but if I get 2.0 I want 2 (and not 3)
Doing number.round(0) + 1 won't work.
I could write a function to do this but I am sure one already exists.
If, nevertheless, it does not exist, where should I create my cap function?
462
Ruby | Numeric round() function The round() is an inbuilt method in Ruby returns a number rounded to a number nearest to the given number with a precision of the given number of digits after the decimal point. In case the number of digits is not given, the default value is taken to be zero.
The round() method can be used to round a number to a specified number of decimal places in Ruby. We can use it without a parameter ( round() ) or with a parameter ( round(n) ).
Ruby has a built in function round() which allows us to both change floats to integers, and round floats to decimal places. round() with no argument will round to 0 decimals, which will return an integer type number. Using round(1) will round to one decimal, and round(2) will round to two decimals.
Try ceil:
1.5.ceil => 2 2.0.ceil => 2 If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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