den
den(x)
Denominator of the rational representation of x
Examples
In the julia programming language, the function den(x)
Returns the denominator of the rational representation of x
.
julia> den(2//3)
3
Provide common examples of its use. If there are any common mistakes users make, add an example.

Find the denominator of a rational number:
julia> r = 5//7; julia> den(r) 7
This example retrieves the denominator of the rational number
r
. 
Handle integers as input:
julia> num = 10; julia> den(num) 1
When an integer is passed to
den
, it returns 1 since integers have a denominator of 1.  Use with floatingpoint numbers:
julia> f = 3.14; julia> den(f) 1
If a floatingpoint number is provided, the
den
function returns 1 as floatingpoint numbers do not have a denominator.
Common mistake example:
julia> den("hello")
ERROR: MethodError: no method matching den(::String)
In this example, the input provided is a string, which is not a valid argument for den
. It's important to ensure that the input to den
is a rational number or a valid type for the function to avoid such errors.
See Also
User Contributed Notes
Add a Note
The format of note supported is markdown, use triple backtick to start and end a code block.