davidrjonas

<?php

/**
 * If you need something safer or more complete see https://github.com/lstrojny/functional-php,
 * in particular, https://github.com/lstrojny/functional-php/blob/master/src/Functional/FlatMap.php
 *
 * @param Callable $fn    Mapping function that returns an array
 * @param array    $array Data over which $fn will be mapped
 * @return array
 */

pathikrit

val n = 9
val s = Math.sqrt(n).toInt
type Board = IndexedSeq[IndexedSeq[Int]]
 
def solve(board: Board, cell: Int = 0): Option[Board] = (cell%n, cell/n) match {
  case (r, `n`) => Some(board)
  case (r, c) if board(r)(c) > 0 => solve(board, cell + 1)
  case (r, c) =>
    def guess(x: Int) = solve(board.updated(r, board(r).updated(c, x)), cell + 1)  
    val used = board.indices.flatMap(i => Seq(board(r)(i), board(i)(c), board(s*(r/s) + i/s)(s*(c/s) + i%s)))

mwhite

The Ultimate Git Alias Setup

If you use git on the command-line, you'll eventually find yourself wanting aliases for your most commonly-used commands. It's incredibly useful to be able to explore your repos with only a few keystrokes that eventually get hardcoded into muscle memory.

Some people don't add aliases because they don't want to have to adjust to not having them on a remote server. Personally, I find that having aliases doesn't mean I that forget the underlying commands, and aliases provide such a massive improvement to my workflow that it would be crazy not to have them.

The simplest way to add an alias for a specific git command is to use a standard bash alias.

# .bashrc

jasonreposa

function array_psplice(&$array, $offset = 0, $length = 1) {
	$return = array_slice($array, $offset, $length, true);

	foreach ($return as $key => $value) {
		unset($array[$key]);
	}

	return $return;
}