I'm programming a basic command line calculator in java that can parse expressions and evaluate them, does not handle brackets yet.
For example an expression: "9+9/2^2*5-1".
At this point I can give my program an expression that contains exponents, and It will evaluate them one by one until the...
This problem from projecteuler.net requires you to take in a 1000 digit word and find the largest product of 13 adjacent numbers. Here is my code:
public final class LargestProductInSeries {
public static void main(String[] args) {
String num = "731671765313306249192251196744265747423553491...
I am having trouble understanding why my updates isn't being pushed through while I don't have an error, success is returned but a ZERO is return for no affected rows. I am using similar style for login and registration.
Note: I am not using phpmyadmin. I am developing using mysql locally on mac...
The guide to getting fired: How to abuse function pointers in GCC on x86 machines by compiling your code by hand:
Returns the current value on the EAX register
int eax = ((int(*)())("\xc3 <- This returns the value of the EAX register"))();
Write a swap function
int a = 10, b = 20;
((void(*)(...
I've built a web crawler using the BeautifulSoup library that pulls stock ticker data from CSV files on yahoo finance, and charts the data using matplotlib. I'm wondering if there are any ways to improve the code I've written, because there are some parts that I think could be a lot better.
imp...
I'm using a factory for my $http get requests.
When I pull single json objects from the $http, it works pretty quickly
I now have items coming through as an array. It is very very inefficent, buggy and slow. Images randomly load and appear out of their div.
Ideally it would just load one list...
I am programming a language interpreter in c# recently and i have created a set of functions that receive either a string or a string[] and splits it by a received string.
For example: with a string
Input-
"Hey:123:hello:456"
":"
Will return this array
{"hey","123","hello","456"}
And with a s...
I'm just a clojure noob (started learn in yesterday). Here is my hellowold program. It factorizes number into primes. Do you have any comments? How could I make this code cleaner and shorter? Maybe I can deduplicate some things?
(defn lazy-primes
([] (cons 2 (lazy-seq (lazy-primes 3 [ 2 ]))))...
I need to develop an API, the functions of the API are requests that call the service exposed by a server.
Initially the API worked like this:
class Server:
def firstRequest(self, arg1, arg2):
# block of code A
async = Async()
async.callFirstRequest(arg1, arg2)
...
Since reading Robert Martin's book "Clean Code" I have been inspired to revisit and refactor some of my code to break it down into succinct methods and small specialised classes.
Given the need to retrieve the NameAttribute off the Name2 property of the TestObject class below...
public clas...
As part of my present project I revived task to deliver group of on-line reports.
As per reports complexity and best performance on my radar I decided to write sql view on Posgres and next attached them to read-only Django models.
I want to ask you what you think about this approach as some of ...
I have the following code to generate an URL based on alias and args provided
/**
* Get the url by alias.
*
* @param string $alias
* @param array $args
*
* @return mixed
*/
public function url($alias, array $args = [])
{
if (empty($this->map[$alias])) {
return null;
}
...
Follow up form Extending Sieve of Eratosthenes beyond a billion
Taking suggestions from the comments on the preious post:
Updated Code: This takes about 22 seconds for MAX as \$10^9\$ to reach "done". This is a significant improvement.
void sieve_of_eratosthenes(){
bool* a;
a = (bool*)malloc(M...
I've Implemented a Serialization Utility which Serializes/DeSerializes a class, along with writing JUnit Test Cases for the same.
Please Review the code and Suggest me how to improve it. Particularly in generics as I've not written much code with Generics in java.
I'll keep adding updated code ...
I have a somewhat complex data structure: a default ordered dictionary of ordered dictionaries, following what's coded here. The class works fine, as I'm able to create ordered dictionaries by default if a key is missing. I would like to further extend the capability of this class, and override t...
I am running FindBugs with findsecbugs plugin to scan java code for security issues. I am getting "Cipher With No Integrity" error for a Cipher function implemented with "PBEWithMD5AndDES". The legend says "The ciphertext produced is susceptible to alteration by an adversary. This mean that the c...
From my previous question, I got great feedback which helped improve my code which I sumbmitted. I went back and built upon that and came back to see if my code is an improvement.
try:
from tkinter import *
except ImportError:
from Tkinter import *
import time
import random
with open(...
I would like to know if this fullscreen page with image and overlay is written clearly. I`m afraid that those two empty divs (topOverlay, and topImage) are not correct. Thanks for any answers!
HTML:
<div id="top"> <!-- #top fullscreen image with site header -->
<div id="topOverlay">
</div>
Hey there I have many different maps in a class of business logic that has to fill JSONObjects. Some of these informations are mandatory to the object, some of them are less. However I now have over 100 lines of map declarations in my buisness logic class. I myself have a feeling that this is not...
I would say that you should make n posts for n solutions.
One solution might be better than another, then everyone has a chance to upvote that specific answer.
This feels wrong:
private decimal ConvertStringToDecimal(string decimalString, decimal defaultReturnValue)
{
var returnDecimal = defaultReturnValue;
try
{
returnDecimal = decimal.Parse(decimalString.Trim());
}
catch (Exception)
{
// naughty
}
return retu...
Here is a more recent way to look at things (Not saying that the ones from 2 years ago are wrong)
To avoid "Facebook scroller long" answers, it is OK to post multiple answers.
If you want to mention a lot of stuff in your answer (such as coding conventions, variable names, method length, code d...
I created a plot on which the y value is visible with the marker.
What's your opinion ?
I wonder if I could have done something simpler.
(code should run in a Jupyter notebook)
%matplotlib inline
fig = plt.figure()
axes = fig.add_axes((1,1,1,1))
X = np.array([3,3.2,3.5,3.8,3.9,5,5.5,5.8,5....
Private Shared Function GetPropertyValueByName(Of TObject, TProperty)(
ByVal T As TObject,
ByVal PropertyName As String) As TProperty
Dim result = GetType(TObject).GetProperties() _
.Where(
Function(p) (p.Name = PropertyName) _
...
I have a custom dictionary where the values are numpy arrays. I would like to have a convenience function that creates a copy of its content except that the values are changed. If no value is passed, then the default None is assigned to the keys, else a value is set. The function can also work wi...
I'm allowing a user to scrape information from LinkedIn by entering the profile url. However I'm relatively new to creating a service (is that even the correct use case?) and I feel like there's room for improvement in my code and how I currently retrieve the information.
I've learned that I sho...
I'm constantly getting this error "IMPORT.IO SERVER ERROR: {"errorType":"InputException","error":"InputException: Bad url: no protocol: "}" when running a batch search via Import.Io's macro-based batch-crawl function. The error can be seen here and the macro that I've tweaked here.
Essentially,...
I have a 2d array class that is actually mapped to a 1d vector. For example, to obtain an element at a particular position, the code is as follows:
template <typename T>
T mat <T>::at(const size_t &row, const size_t &col) const
{
return m_values[row*ncol() + col];
}
I now need to be able to ...
LINQ has two syntaxes to offer. You've used the method syntax, which I find very neat and useful, but for simpler queries I find the query syntax looks much less bulky in VB.NET:
Dim result = (From p In GetType(TObject.GetProperties()
Where p.Name = PropertyName _
...
I think the following is good but wondering if it can be simplified or improved.
My condition for code execution is the following:
It is a Monday
AND
It is not the Monday following the last Saturday in the month.
This is the current sql:
DECLARE @now DATETIME = DATEADD(dd,DATEDIFF(dd,'1900010...
SerializationUtil should work on T extends Serializable instead of T. This makes misuse harder.
Prefixing serializable to a data-holder is unnecessary for almost all intents and purposes.
You may be interested in operating on Path instead of String when Serializing and deSerializing
Your Util do...
I need to redo a migration occasionally. The workflow is usually something like this:
find or ls | grep the migration using some keyword
copy the timestamp
paste the timestamp in bundle exec rake db:migrate:redo VERSION=123
As I hate repetitive work, I wrote a small bash script that allows ru...
