I'm beginning my journey into computer science and I've started with the CS50 course.
The first problem set requires you to check if a number might be a valid credit card number by using Luhn’s algorithm and the first digits used by each credit card company.
The code I wrote is working with ...
Does this code use flat_map idiomatically? I am uncertain about my use of clone on the inner strings.
struct Foo {
bars: Vec<Bar>,
}
struct Bar {
strings: Vec<String>,
}
fn get_strings(foo: &Foo) -> Vec<String> {
foo.bars.iter().flat_map(|bar| bar.strings.clone()).collect()
}
fn m...
I'm writing a custom shell and echo works with my shell variables:
'PATH' is set to /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/usr/local/go/bin.
$ str=FOO
$ echo $str
19163: executing echo
FOO
19163: executed
$ str=BAR
$ echo $str
19170: e...
i would like to minimise my if and else what would you guys recommend?
im using laravel 5.1 framework if that helps :)
im trying to let users log in with multiple columns (e.g id,email,phone) if one fails then checks the next columns one or is there better way of doing it?
code:
$email = $req...
I'm coding a text adventure and I'm trying to have both unique and general inputs.
So the style I'm currently using looks like:
boolean worked = false;
String s = "";
while (!worked) {
BufferedReader br = new BufferedReader(new InputStreamReader(
System.in));
...
I have a schedule with around 2000 lines. I need to find out the driving predecessors for a particular task that is selected. I've used the following code, but it takes very long (approx. 30 minutes) to execute. Is there any improvement opportunities?
Thanks,
Mason
Code:
Public Sub PathFinder(...
I am a beginner and just started learning C++ since last week. So I was trying to solve the Euler problems and I have solved the first three but my code for the fourth one isn't working. Can anyone please help me?`
` #include
using namespace std;
int main()
{
int i,x,p,j,n=0,lp=0...
So, a while back, I made a JavaScript program for fun. It took a sentence or any kind of text input from the user and determined how many words, spaces, characters, and average characters. I worked on it and was successful but before it was, I went on a website and studied the charAt method becau...
Found this problem somewhere online and wanted to try this out with my beginner skills. I was able to solve this problem but wanted to know ,how I can make my code better
Here is the solution I have written, and I want help in the following areas
What am i doing wrong and how can i make it bett...
PHP program which extracts attribute list from the custom tag. It also strips out the single and double quote if it exists around attribute value.
<?php
function parseAnswerTag($tag)
{
// get the answer tag and parse out the attributes of answer tag
$returningObj = array();
//get t...
I have to implement an image-Carousel.
Because I'll reuse the snippet within other projects which might contain all kinds of external libraries I used an immediately invoked function expression.
Could my code be improved?
All Hints appreciated.
(function (imgPaths, imgTag, prevButton, ne...
I'm currently learning python and I have to build a simple labyrinth game that we play in the console on the network. I dig a bit into python basic network programming and I decided to build a simple console chat to practice. I come to this code however I'm pretty sure it won't work on windows be...
I am new to golang and not able to extract information from page which requires login (here in my case is Roll_number is used for login)
func getdata(){
res, _ := http.Get("https://14.139.56.15/scheme13/studentresult/index.asp")
doc, err := goquery.NewDocumentFromResponse(res)
if err != nil {...
Nope. They're really handy for implementing Observers and making sure that classes are closed to modification.
Let's say we have a method that registers new users.
public void Register(user) {
db.Save(save);
}
Then someone decides that an email should be sent. We could do this.
public...
I like to code in AS3 (ActionScript 3) in my spare time. My code quality is okay, but because I write most of the code after work or in weekends when I'm tired, I make a few mistakes. I'd like to be able to have other people take a look at my code and give me feedback.
Code Review is a communit...
I have been trying to learn asp.net on my own. It has not been working well with the free online tutorial provided by microsoft.
Now, I am attempting this book as per the title.
And I am getting the below error :
'System.Web.Mvc.HtmlHelper>' does not contain a definition for 'HtmlConvertToJso...
Please help me improve this code.
Plus, I have some bugs I have no idea how to fix (characters are sometimes echoed to the terminal, cursor at tail of snake).
Still have no boundries, will add them later.
Move snake using: w a s d
(Initially I tried to implement this using arrow keys, but ASCII...
So I have doubts about my code and if it is any good. I have a parent class Spell:
using UnityEngine;
using System.Collections;
public class Spell : MonoBehaviour {
public enum SpellType { AttackType, AreaType, BuffType, DebuffType };
public float damage;
public float speed;
p...
I have created the BasicSetting class with two properties: Name & Value. The user is allowed to extend it by creating a derived class with his own properties as additional attributes for the value that together build a key for the value.
To solve this I use a lot of reflection to get the propert...
I'd like to suggest the following implementation:
// Find an instance of substr in an array of characters
// the array of characters does not have to be null terminated
// the search is limited to the first n characters in the array.
char *strnstr(char *str, const char *substr, size_t n)
{
c...
