your diagram looks good, I assume that you are going to expand on the tables that you have as you develop this diagram more.
I would pull out the Purchase information into their own table.
also addresses should be their own table as well that way you don't duplicate data when a user moves int...
I have a school project to create a simple networking site, And I want to know if my database design is good. I'm open for any suggestions to improve my design thanks!
I've made the code more DRY, and addressed some of the concerns here:
A package for classes and Ajax
/***************************************************************************************************
**FRAME - provides a class system with integrated ajax
** General Methods
**...
The for loop just return me 0 as cantidad value, I supposed it should have returned 2 due facturas has 2x pagado. Ty
facturas=["Mario:pagado","Vane:pagado","Velez:deuda"];
function extractNames(string){
end=string.indexOf(":");
return string.slice(0,end);
}
function countPaids(texto){
count=...
I have written the following solution to problem 12 on Project Euler. The code is correct in that it calculates the correct answer however, the run time is appauling (6m9s on a 2.4GHz i7!!!)...
I know python is definitely not the fastest of languages, but I'm clearly missing a trick here...
Co...
As this 3rd beta-year comes to an end, we would like to host an event: The Best of Code Review 2013. All Code Review users will be invited to nominate (link to) the best questions and answers from this year, and showcase them as examples of what great CR questions and answers should look like.
...
I am working on a CoderByte problem in JavaScript. I have solved the problem below. Although I am trying to figure out if there is an easier way to do it? I am guessing Reg Ex will come up, although I don't have experience with that yet.
From CoderByte: Using the JavaScript language, have the f...This code is not working. I am trying to get a list of feature names. Products in category 12 all have 5 features assigned, but it only shows 1 feature when it prints.
Strangely enough, when I echo $FeatureName immediately after the second query (before closing bracket), it echos the 5 items. B...
A want to implement Type system for different representations of angle value.
Angle can be represented using following types:
- Degrees (45.5)
- Degrees Minutes Seconds, DMS (45*30'00")
- Radians (0.7941)
It should support conversions between types (like Convert.ToInt32(someDouble)), ...
Please review the code for code cleanup, smart optimizations and best practices. Also verify my complexity: O(n2), where n is the number of nodes
/**
* This class traverses the tree and returns in-order representation.
* This class does not recursion and does not use stack.
* This code is thr...
Please review the code quality of this l33t Speak translator. Improvement suggestions are welcome. Here it is - http://jsbin.com/IHoFuQE/1
(function() {
"use strict";
// http://en.wikipedia.org/wiki/Leet
// http://www.catb.org/jargon/html/crackers.html
var alphabets = { // common
"...
as an exercise I wanted to rewrite this toy python code in haskell.
def f(x):
return abs(42-x)**2
def improve(x):
newX = x + 0.1
return newX, f(newX)
def optimize(f, goal):
x = 0
err = f(x)
while not err < goal:
x, err = improve(x)
return x, err
print(optim...
The code takes far too long to complete (over 10 minutes). Is there any way to optimize the run-time? and make it more elegant?
#include <iostream>
#include <chrono>
#include <ctime>
inline void triangle(int &num, int &interval)
{
num = ((interval * interval) + interval ) / 2;
}
int main()...
I needed smth that could send (scp/rsync) many files in parallel but that would not overload machine, firewalls on the way by starting e.g. 600 simultaneous uploads, so upload should be done in batches.
Most of the utilities like aria2c are download managers and I needed something to send many ...
I believe you can do this in O(n).
The algorithm below loops through the list only once. It keeps track of the numbers it's seen using a HashSet. For each number, it works out its required complement. If it's seen the complement already then it's found a match. If not, it adds the number to t...
I create a binary tree, now I want to remove a node. I hope that you can provide me some input. The nodes are composed of characters instead of numbers.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace BinaryTree
{
...
First off, my solution was way more convoluted ;)
Other than that, 2 minor points
It is good practice to have a shortcut to [].length in general
Since 'a' is larger than '+' and '=' you can drop a part of the logic
So you could try something like
var simpleSymbols = function (s) {
for (...
