User:Underscore/Scratchpad: Difference between revisions

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Latest revision as of 22:04, 31 July 2010

100 doors (and possibly elsewhere): There's gotta be a better way to say @squares[1 .. @squares.end], possibly using Whatever or a negative number in the subscript. Maybe I should just lobby for the inclusion of Haskell's tail in the setting library.
Arithmetic Evaluator:
- Use make to create a much more digestible parse tree.
- my grammar. I'm not certain you're supposed to be able to do that, but I think so.
Comments: Nested bracketing characters.
Creating a Function:
- Not quite the same thing (see Synopsis 2): <lang perl6>sub multiply (Int $a, Int $b) as Int { $a * $b }</lang>
- &multiply = [*];
- &multiply = &infix<*>;
Monty Hall simulation:
- :delete adverb.
- More trials.
Trigonometric Functions: The base-switching interface specified in Numeric.pod.

@@ Line 12: / Line 12: @@
 <li> <code>&multiply = [*];</code></li>
 <li> <code>&multiply = &infix<*>;</code></li></ul></li>
-<li> [[Greatest common divisor#Perl 6|Greatest common divisor]]: <code>($a, $b, &[%] ... 0)[*-2]</code>
-<li> [[Happy Number#Perl 6|Happy Number]]: Laziness.
 <li> [[Monty Hall simulation#Perl 6|Monty Hall simulation]]:<ul>
 <li> <code>:delete</code> adverb.</li>
 <li> More trials.</li></ul></li>
-<li> [[Playing Cards#Perl 6|Playing Cards]]: There really ought to be something like <code>EnumerationType.pick(*)</code> that gives you the values of the enumeration ''in order''. You'd think <code>Two .. Ace</code> would do it, but as of Rakudo release #22, that produces numbers, not Pips.
 <li> [[Trigonometric Functions#Perl 6|Trigonometric Functions]]: The base-switching interface specified in <code>Numeric.pod</code>.
-<li> [[True/False Values#Perl 6|True/False Values]]: <code>0 but True</code>. </li>
 </ul>