numist

This all started because I was complaining about some uninitialized pointer value causing me grief[^mmap] and someone (explicitly trolling) said they always check pointers using:

int fds[2] = { -1, -1}; 
pipe(fds);
if (write(fds[0], pointer_to_check, sizeof(intptr_t)) == -1) {
    close(fds[0]);
    close(fds[1]);
    return not_valid;
} else {

numist

extension FixedWidthInteger where Self: UnsignedInteger {
  // Enumerates `self`'s bits from most significant to least
  var bits: some Sequence {
    return sequence(state: Self.bitWidth) { i -> Bool? in
      guard i > 0 else { return nil }
      i -= 1
      return (self & (1 << i) != 0)
    }
  }
}

numist

[
  [{"c":"#cccccc", "a":7, "x":6.0}, {"c":"#9999cc"}, "C₈", {"c":"#cccccc"}, {"c":"#333333","t":"#cccccc"},"C₈#",{"c":"#cccccc","t":"#000000"}, "D₈", {"c":"#333333","t":"#cccccc"},"D₈#",{"c":"#cccccc","t":"#000000"}, "E₈", "F₈", {"c":"#333333","t":"#cccccc"},"F₈#",{"c":"#cccccc","t":"#000000"}, "G₈", {"c":"#333333","t":"#cccccc"},"G₈#",{"c":"#cccccc","t":"#000000"}, "A₈", {"c":"#333333","t":"#cccccc"},"A₈#",{"c":"#cccccc","t":"#000000"}, "B₈"],
  [{"c":"#cccccc", "a":7, "x":5.5}, {"c":"#333333","t":"#cccccc"},"G₇#",{"c":"#cccccc","t":"#000000"}, "A₇", {"c":"#333333","t":"#cccccc"},"A₇#",{"c":"#cccccc","t":"#000000"}, "B₇", {"c":"#9999cc"}, "C₈", {"c":"#cccccc"}, {"c":"#333333","t":"#cccccc"},"C₈#",{"c":"#cccccc","t":"#000000"}, "D₈", {"c":"#333333","t":"#cccccc"},"D₈#",{"c":"#cccccc","t":"#000000"}, "E₈", "F₈", {"c":"#333333","t":"#cccccc"},"F₈#",{"c":"#cccccc","t":"#000000"}, "G₈", {"c":"#333333","t":"#cccccc"},"G₈#",{"c":"#cccccc","t":"#000000"}],
  [{"c":"#cccccc", "a":7, "x":5.0}, "E₇", "F₇", {"c":"#3333

numist

    /*
     FrontierBiNode is a quadtree node with two additional restrictions:
     1) all insertions to the southwest are dropped
     2) insertions to the northeast are not allowed
     
     Restriction 2) is satisfied by performing all insertions in descending
     order of (x+y), resulting in a binary tree structure (all children lie to
     the northwest or southeast) containing only points representing edit paths
     that have made novel progress.
     */

numist

#include "Opto.h"

bool Opto::getState() {
  return state;
}

bool Opto::loop(int val) {
  bool prev_state = state;
  if (val > highest) { highest = val; }
  if (val < lowest) { lowest = val; }

numist

// What is an alias method?

// If we have a list of elements with different frequencies,
// like the letters in the English language… 
let frequencies = [
    ("a", 8.167), ("b", 1.492), ("c", 2.782), ("d", 4.253), ("e", 12.702),
    ("f", 2.228), ("g", 2.015), ("h", 6.094), ("i", 6.966), ("j", 0.153),
    ("k", 0.772), ("l", 4.025), ("m", 2.406), ("n", 6.749), ("o", 7.507),
    ("p", 1.929), ("q", 0.095), ("r", 5.987), ("s", 6.327), ("t", 9.056),
    ("u", 2.758), ("v", 0.978), ("w", 2.360), ("x", 0.150), ("y", 1.974),

numist

Prints outage statistics from ping output

Usage

ping 8.8.8.8 | ts '%s' | ./outageReport.rb

Examples:

Packet loss

numist

[
  {
    "name": "Model Z70",
    "switchMount": "cherry",
    "plate": true
  },
  [
    "~\n`",
    {
      "a": 0

numist

import Darwin // Provides: sin/cos/tan

// memoize function from https://gist.github.com/berkus/8a9e104f8aac5d025eb5
func memoize<T: Hashable, U>( body: ( (T)->U, T )->U ) -> (T)->U {
    var memo = Dictionary<T, U>()
    var result: ((T)->U)!
    result = { x in
        if let q = memo[x] { return q }
        let r = body(result, x)
        memo[x] = r

numist

func ==<T:Feed>(lhs: T, rhs: T) -> Bool {
    return lhs.link == rhs.link
}

protocol Feed : Equatable {
    var link : String {get}
}

protocol Folder {
    typealias FeedType: Feed