Combinations with repetitions: Difference between revisions
→{{header|Ruby}}: Fluff up the size calculation example
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# Extra credit
possible_doughnuts = [*1..
# size returns the size of the enumerator, or nil if it can’t be calculated lazily.
puts "", "#{possible_doughnuts.size} ways to order
</lang>
{{out}}
<pre>
Line 3,226 ⟶ 3,227:
plain and plain
</pre>
=={{header|Rust}}==
<lang rust>
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