2,322 Reusable Code Snippet Topics
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| | A console application to multiply two matrix of float numbers and print result on console. Some memory checks are done as it is allocating memory dynamicaly. May give error and exit when short of memory. |
 | Here unsystematic play with linked list structure Object Oriented style. If you have performance critical code, please do not use this but use the superb faster than list [URL="http://pypi.python.org/pypi/blist/"]blist module[/URL] (including sorted versions of main data structures). As OO newbie (though with some 30 years of other programming), I wanted … |
| | Create the HTML we will be using. I will show the whole code and then break it down so you can see what each thing does. Let's start. Create a new html file called [B]index.html[/B]. HTML Code: [COLOR=#000080]<html>[/COLOR] [COLOR=#000080]<head>[/COLOR] [COLOR=#000080]<title>[/COLOR]AJAX Demo[COLOR=#000080]</title>[/COLOR] [COLOR=#800000]<script src='getnv.js'>[/COLOR][COLOR=#800000]</script>[/COLOR] [COLOR=#000080]</head>[/COLOR] [COLOR=#000080]<body>[/COLOR] [COLOR=#000080]<div id='menu'>[/COLOR] [COLOR=#000080]<ul>[/COLOR] [COLOR=#000080]<li>[/COLOR][COLOR=#008000]<a onClick='check_content("page.php?id=index")'>[/COLOR]Home[COLOR=#008000]</a>[/COLOR][COLOR=#000080]</li>[/COLOR] … |
| | From a thread on another forum, I wondered how difficult it would be to create a Tic-Tac-Toe game that could not be beaten. Since it is easiest if the computer goes first and chooses the center square, this code implements that portion. The logic is fairly simple; occupy the center … |
 | A little console application in C# to show you the IP address of your computer or the IP address of any website you like. |
| | Here is capital letter style caesar crypted message. We can simply try all possible shifts for first few words (ignoring punctuations, which is left as is). If both first words succeed we assume we cracked it. You could also use Vigenère encryption, but keeping non-letters is less simple, our Vigenère … |
 | Sometimes, you just want to run a system command from python and capture its output. Currently, the standard way to do this is to call the subprocess.Popen with convenient arguments and use the communicate method. After writing such code a few times, I wrote this little Command class to ease … |
 | Early versions of Python used a hybrid of samplesort (a variant of quicksort with large sample size) and binary insertion sort as the built-in sorting algorithm. This proved to be somewhat unstable, and was replaced in version 2.3 with an adaptive mergesort algorithm. I am comparing several rudimentary sorting routines, … |
| | Hello everyone, I wrote an Ajax API, and I thought that it may be of some use to you all. I think that it's pretty self-explanatory. Post or PM me if you all need more or need help. Peace! -Stev |
| | The VS designer is a wonderful tool to use and saves you lots of time. One drawback though. If you have a lot of the same controls and you want to change some properties of it at runtime, you got some coding to do. Say you want to change the … |
| | The function Delay() allows access to other events during the delay. For instance a certain key could be used to interrupt a lenghty delay. The Win32 API function Sleep() ignores events, maybe it should be called DeepSleep().  |
| | The need for efficient storing of IP numbers came up in discussion thread. With help of this conversion to/from the 32 bit numbers that IP numbers (the old ones) represent I could push the time of finding unique IP numbers from 10 million random numbers down to under two minutes … |
 | I just made this code today for a site I'm working on and figured people may try to improve it. To use: [CODE] $("#randomize").randomize(); [/CODE] [CODE=HTML] <!DOCTYPE HTML> <html> <head> <title>Random Pick Test</title> <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.js"></script> <script type="text/javascript" src="randomize.jQuery.js"></script> <script type="text/javascript"> $(document).ready(function() { $("#randomize").randomize({ direction: 'topToBottom', evenBG: '#FFF', evenFG: '#000', …  |
| | Note This app will tell the current Time, requires .net 3.0 |
| | Learned about hook functions [URL="http://www.daniweb.com/software-development/python/threads/383164/1650339#post1650339"]for a thread[/URL] having problem with bad user input from the documentation. This is result which skips bad inputs. |
| | Simple resources loader tool which help to find some file in classpath and load it's content with respect to sanitizing policies.  |
| | [B]Hi Guys.[/B] I am new to this forum so I thaught i'd post a useful code snippet. it changes text to clickable html links. Hope it comes in handy. Pete:) |
| | Inspired by password entry discussions, I did this simple entry. You must of course find safe way to store the passwords, for example hashlib ([url]http://stackoverflow.com/questions/4820043/basics-of-python-encryption-w-hashlib-sha1[/url]) or [URL="https://www.dlitz.net/software/pycrypto/"]PyCrypto[/URL] and replace the simplistic example match for real life usage. The print at line 23 is just to check the attempts and to … |
| | Source code implemented by [B]Niyas C S2C PPMHSS Kottukkara Kondotty Malappuram Kerala St India[/B] |
 | I found an old thread that had never been answered here - [url]http://www.daniweb.com/software-development/vbnet/threads/330981[/url] Basically, the guy was asking how to retrieve database names and/or table names from a MySql database with vb.net. Here's my answer to that. Yes, I still use vb6 because vb.net is not much better and I … |
| | You can access the sound chip to play midi voices using winmm.lib, or in case of Dev C++ the libwinmm.a library. There are 128 midi voices to pick from, anything from the Acoustic Grand Piano = 0 to the Gunshot = 127. |
| | I did some transformation of overcomplicated Rosetta code version |
| | Roman numbers is a standard programming exercise, to give it a small twist, we input roman numeral, turn it to value and prepare minimal version of it using the substraction rule. Correctness of the input is not checked so Garbage in - Garbage out. |
| | While looking stuff about idlelib, I came to [URL="http://stackoverflow.com/questions/3431498/what-code-can-i-use-to-check-if-python-is-running-in-idle"]this thread in stackoverflow[/URL], so I posted own solution. I post it also here, as maybe somebody needs it (as for example \b looks ugly in IDLE) |
 | Sometimes one line of tool tip is not enough. You may want to try and play around with JToolTip, but if you in hurry this "little hack" can be handy. With little of HTML plus CSS code you can work out various formats (font, colour, alignment, size etc.). |
| | This is my first GUI program in Java. If finds the day of the week for any given date which is after 1 January 1900.  |
| | Picked up from old thread but currently applicable (the IBAN number became more widely required actually this year in Finland). The style was quite alien for modern Python coders, so I massaged the code to my own liking. I removed many temporary variables, as for my opinion they did not … |
| | By coding algorithm and using some liberal prints with small set of data, you can learn to understand the basic algorithms better than just reading about them. Here simple selection sort. |
| | this code will delete all the files from a directory on the server. be careful when using this as it will delete everything in the directory so use it wisely or make sure you have backups if it is implemented on the wrong directory. it works by searching for all … |
 | I wrote this 3D Breakout game as a sample project to learn both Python and the visual module, vPython. It is based on a similar game I had on my Amiga back in the 80s. I don't expect that my Python is either standard or as elegant as it could … |
 | I have prepared an example of login page which displays a form with inputs for username and password and compares submited values with records in database. If match is found the user is redirected to another page, if not error message is displayed. This example is heavy commented. Hope it … |
| | Very trivial program which could be thought as conclusion from the Quiz posts (thanks Gribouillis for inspiration for format) |
 | Alright , so I spent _forever_ trying to figure this out. So, if any newbies here need to know how to write and read ANY object (with the exclusion of pointers, but I'll get to that), this is something that can help. First and foremost, you have to take endianness …  |
| | There was question about encryption in Delphi/Pascal forum and a guy was suggested reversing the bits as additional step (I do not know if he in reality meant XOR 255, that is making 0's 1's and vice versa). As it keeps still same distribution of letters I suggested as better … |
| | Dig up this for discussion thread request and some Googling. By little experiment found the different forms for sending message commands. Could no send in Python3 the code of program itself so only simple test "Hello". Sorry that subject is left incorrectly refering program name.  |
 | This simple static class contains a static method called sOnline that accepts a username as a string param. it make a call to an old yahoo api that will determine if a Y! user is online. This only returns true if the user is not using stealth, this will return … |
| | Here is example how data can be summed to dictionary or you can use numpy.histogram to sum the data as weights of the categorized data. |
| | I finally modernized this code. It is very primitive, but it is nice to have basic version, even it does a lot of mistakes. You could add features, like repetition elimination, or you can check the compete chatbot: [url]http://www.jezuk.co.uk/cgi-bin/view/software/whereskal[/url]. |
| | I was not happy of solution [url]http://chaos.weblogs.us/archives/331[/url] for one line Ceasar cipher, so I wrote my own version without import by using raw_input (change to input for Python3). Chance to play little with memoryview object also. Crypt: give displacement amount for shift Decrypt: give -displacement amount shift |
 | This code snippet outlines a simple, no-frills linked list. Tested under MSVC++ 2003 and Comeau, but not guaranteed bug free. Snippet includes example main() . This snippet is intended as an example of a possible implementation of a linked list class (Of which there are many variations) For a better …  |
| | Again "pseudo-code" for [URL="http://www.daniweb.com/software-development/cpp/threads/379255/1632559#post1632559"]C++ program[/URL]. Quite primitive and simple, but I post it anyway. Generalized to take even even number as parameter. |
| | What polar coordinates are is explained [url=http://en.wikipedia.org/wiki/Polar_coordinate_system]here[/url]. I wanted to draw some polar functions myself, so I changed my [url=http://www.daniweb.com/software-development/csharp/code/217204]plotting class [/url] a bit and added a polar struct to a new project.. Just posted code for the Plot class and the polar point structure here. You can find an … |
| | Here is simple math program to list number whose all factors are in given set of factors. I have included my timing decorator, which uses my timestring function, so I included that and imports for decorator in the decorator function, bit against the rules. Of course I could have used … |
| | Although [url=http://en.wikipedia.org/wiki/Roman_numerals]roman numerals[/url] sneak in our lives from time to time, we(luckily) don't use them very often. Probably the reason why the Romans where not that good at calculating things. That changed, more than 1000 years later, with [url=http://en.wikipedia.org/wiki/Fibonacci]this person[/url] who introduced to the Western world the number system we … |
| | hi.. i just made two function related to excel . 1. Merging all sheet of excel as tables in single Dataset 2. Exporting a dataset to Excel File .(all the tables of dataset as sheets) i just wanted to share.. i hope it becomes helpful to you. ps: Dont forget … |
 | Hi.Someone asked a day or two ago for a way to extract the square root of a number without using the std::sqrt function so i thought about writing my own.Here it is and please feel free to criticize. |
 | Just a simple console blackjack game. The bread and butter code was written with lots of comments, so you can improve on it. Really, the most important part is figuring out when an ace is 11 in value and when it is a 1 in value, so you don't bust. |
| | Would you like to know when the Google spider or any other spider comes by your site? Well now you can with this handy snippet. It will send you an email for everypage it visits. |
| | As [URL="http://www.daniweb.com/software-development/c/threads/377568/1625821#post1625821"]Goddess Narues' C code in C forum[/URL] was over my head and her critique of simplistic solution maybe overflowing the integer range was valid in C, I worked out a recursive solution more suitable to my brain in my preferable language. Maybe one day I put in C, now … |
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