Implementations of Happy Numbers
Simple recursive version that stores the previous steps in the sequence in an array, and checks for duplicates to detect cycles.
Can get up to 250,000,000 numbers in ~5s, with no memoisation:
$ time ./happy_numbers 350000000
| fizz = cycle [[], [], "fizz"] | |
| buzz = cycle [[], [], [], [], "buzz"] | |
| numbers = [1..] | |
| fizzbuzz = zip3 fizz buzz numbers | |
| toFizzBuzz [] [] x = show x | |
| toFizzBuzz fizz buzz x = fizz ++ buzz |
(letter spacing is only correct for non-bold text system setting)
// font: 11px / 13px; letter-spacing: 0.22px
// font: 12px / 16px; letter-spacing: 0.21px;
// font: 13px / 18px; letter-spacing: 0.2px
// font: 14px / 19px; letter-spacing: 0.17px; 0.1px @500
// font: 15px / 20px; letter-spacing: 0.13px; 0.063px @500
Elixir's pipeline operator |> apparently passes the result of each step as the first parameter to the next, so
iex> [1, [2], 3] |> List.flatten |> Enum.map(fn x -> x * 2 end)
[2, 4, 6]
is equivalent to
| (defun revert-buffer-with-sudo () | |
| "reopen file in current buffer with sudo" | |
| (interactive) | |
| (let* ((filename (buffer-file-name (current-buffer))) | |
| (sudo-filename (concat "/sudo::" filename))) | |
| (kill-buffer) | |
| (find-file sudo-filename))) |
| class A | |
| def a; "A#a" end | |
| module B | |
| def b; "B#b" end | |
| end | |
| include B | |
| end |
| irb> x = [1,2,"",3, "", ""] | |
| => [1, 2, "", 3, "", ""] | |
| irb> x.pop while x.last.blank? | |
| => nil | |
| irb> x | |
| => [1, 2, "", 3] | |
| irb> x = [1,2,"",3] | |
| => [1, 2, "", 3] |
| Gems included by the bundle: | |
| * abstract (1.0.0) | |
| * actionmailer (3.0.0.beta3) | |
| * actionpack (3.0.0.beta3) | |
| * activemodel (3.0.0.beta3) | |
| * activerecord (3.0.0.beta3) | |
| * activeresource (3.0.0.beta3) | |
| * activesupport (3.0.0.beta3) | |
| * arel (0.3.3) | |
| * builder (2.1.2) |
| pasokun:myasics bodhi$ ruby -Itest test/m_test.rb | |
| Loaded suite test/m_test | |
| Started | |
| ..E | |
| Finished in 0.002001 seconds. | |
| 1) Error: | |
| test_mock_should_fail(MTest): | |
| Mocha::ExpectationError: unexpected invocation: #<Object:0x109c3fc30>.to_s() | |
| unsatisfied expectations: |
| commit d37cb54df270fd6bd1b7464af2bc3e285079cdc5 | |
| Author: bodhi | |
| Date: Sat Dec 19 21:53:27 2009 +1100 | |
| Create event when drag-n-dropping non-file URLs on Nextstep | |
| diff --git a/lisp/term/ns-win.el b/lisp/term/ns-win.el | |
| index 157b2dd..13bd0ac 100644 | |
| --- a/lisp/term/ns-win.el | |
| +++ b/lisp/term/ns-win.el |