Possible to write a classic fizzbuzz example using a UFCS chain?
Ivan Kazmenko via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Tue Apr 28 06:59:46 PDT 2015
On Tuesday, 28 April 2015 at 10:46:54 UTC, Gary Willoughby wrote:
> After reading the following thread:
>
> http://forum.dlang.org/thread/nczgumcdfystcjqybtku@forum.dlang.org
>
> I wondered if it was possible to write a classic fizzbuzz[1]
> example using a UFCS chain? I've tried and failed.
>
> [1]: http://en.wikipedia.org/wiki/Fizz_buzz
Here is another, hopefully readable, version with lambda built on
ternary operators:
-----
import std.algorithm, std.conv, std.functional, std.range,
std.stdio;
void main () {
sequence !(q{n + 1})
.map !(x =>
(x % 3 == 0 ? "fizz" : "") ~
( x % 5 == 0 ? "buzz" : "") ~
(x % 3 != 0 && x % 5 != 0 ? x.text : ""))
.take (100)
.join (" ")
.writeln;
}
-----
Output:
-----
1 2 fizz 4 buzz fizz 7 8 fizz buzz 11 fizz 13 14 fizzbuzz 16 17
fizz 19 buzz fizz 22 23 fizz buzz 26 fizz 28 29 fizzbuzz 31 32
fizz 34 buzz fizz 37 38 fizz buzz 41 fizz 43 44 fizzbuzz 46 47
fizz 49 buzz fizz 52 53 fizz buzz 56 fizz 58 59 fizzbuzz 61 62
fizz 64 buzz fizz 67 68 fizz buzz 71 fizz 73 74 fizzbuzz 76 77
fizz 79 buzz fizz 82 83 fizz buzz 86 fizz 88 89 fizzbuzz 91 92
fizz 94 buzz fizz 97 98 fizz buzz
-----
Ivan Kazmenko.
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