pyrtsa

Intro

All the Java code here comes from Algorithms, 4th Edition, by Robert Sedgewick and Kevin Wayne.

The Swift code was written by myself. Although it is mainly a direct port of the Java code :)

The goal was to see how fast Swift would compare to a language such as Java in a somewhat non-trivial case.

The input used was largeUF.txt, also provided by the Algorithms book. It is about 27mb, so I left it out of the gist :)

pyrtsa

(defn get-user-from-request [request]
  (when-let [ident (get-in request [:session ::friend/identity :current])]
    (magic/user-by-id (get-in request [:myapp :system :db]) ident)))

(defn wrap-user
  "Add user information to the request map if logged in."
  [handler]
  (fn [request]
    (if-let [user (get-user-from-request request)]
      (handler (assoc-in request [:myapp :user] user))

pyrtsa

#include <vector>
#include <memory>
#include <cassert>

template<typename T>
struct idx_vector {
    typedef int index;
    
    std::vector<std::unique_ptr<T>> pointers_;
    std::vector<index> free_indices_;

pyrtsa

NSDateFormatter *dateFormatter = [NSDateFormatter new];
dateFormatter.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"];
dateFormatter.dateFormat = @"YYYY-MM-dd'T'HH:mm:ss.SSS'Z'";
dateFormatter.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:0];

pyrtsa

// jQuery extensions

$.fn.valueAsObservable = function valueAsObservable() {
    var changes = $(this).changeAsObservable();
    var keyUps = $(this).keyupAsObservable();
    var values = changes.merge(keyUps).map(function (e) {
        return e.target.value;
    });
    return values.startWith($(this).val()).distinctUntilChanged();
}

pyrtsa

#include <boost/foreach.hpp>
#include <boost/function.hpp>
#include <boost/spirit/include/phoenix.hpp>
#include <boost/shared_ptr.hpp>
#include <iostream>
#include <map>
#include <string>
#include <vector>

struct Parent { virtual std::string hello() const = 0; };