2,322 Reusable Code Snippet Topics
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 | If you want a window with a menubar, toolbar, statusbar, dock and central widgets, you can use the PySide GUI toolkit's QMainWindow. To use the more traditional box and grid layouts, you simply add a QWidget instance as the central widget. Here is an example. |
 | Here is code, which you can play with before installing and using the [superior blist package from pypi](http://pypi.python.org/pypi/blist/). I did it as therapy after doing programming test answer using zillion of setters and getters. Motivation is basically to show why you should use properties after you need them and attribute … |
| | A colorful look at the PySide GUI toolkit and its QPainter class and methods. Well commented and demonstrated with the drawing of a number of rectangles and the different ways to apply colors. |
 | 'the code is working properly only problem with this code is when the first line ends in excel and data is inserted in next Row "instead of inserting another row it copies the same content which is inseted last time in form "  |
| | [B]Introduction[/B] Hello everyone. This little code snippet shows you how to read in scan codes from the keyboard. It is slightly different than reading in a regular character. When you use the [INLINECODE]getch()[/INLINECODE] function, it is normally returning an ASCII value. Some keyboards have extra keys though. These include the … |
| | I'm working on a project that contains 3 different lists. 2 lists of 2 different controls, and 1 list of a custom class. I found that I needed each of these lists sorted. The problem with sorting a list of complex types is there's no default comparer for them. That … |
| | A Python code example to find an approximate value for x in f(x) = 0 using Newton's method.  |
| | Explore Python's sqlite3 database module, create, write and read a database file. |
| | This snippet shows you how to create a list of class instances. The class itself cannot be pickled, but the list of instances can. To use the pickled data file in another program, you have to recode the class in that program. |
 | I was struggling long for proper image resize function for maintaining image ratio. Finally i end end up with merging and changing all codes and it works ! function resizeImage($sourceFile,$destFile,$width,$height) sourceFile => Full path along with filename destinationFile => Full path along with filename I hope this will help coders.. |
| | Jython is a version of Python that can use the extensive Java library. Jython uses Python syntax and avoids the rather ugly syntax (at least for Pythonions) of Java. Here we apply it to bring up an image from a file. |
 | #include<iostream> #include<algorithm> using namespace std; #define MAX 10000000 #include<stdlib.h> #include<string.h> char s[MAX]; int p[MAX]; int bucket[MAX],nbucket[MAX]; struct suffix { int idx; }pos[MAX]; int H=0; bool cmp(struct suffix i,struct suffix j) { if(H==0) { return s[i.idx]<s[j.idx]; } else { if(bucket[i.idx]==bucket[j.idx]) { return bucket[i.idx+H]<bucket[j.idx+H]; } else { return bucket[i.idx]<bucket[j.idx]; } } } …  |
 | This small python script invokes the [Treeline](http://treeline.bellz.org/index.html) tree visualizer to display xml files in a pleasant way.  |
| | I was trying to set a UniqueIdentifier based on Long. The objective was to give a certain custom Object a unique identifier in order to allow me to store them in a hashmap. I saw someone trying to use the most significant bits. So I realized that the addition of …  |
| | This snippet is easy: it defines an immutable wrapper around a sequence type (list, deque, etc) which allows a class, function or module to expose a read only version of a sequence to the outer world. A constant wrapper around mapping types could also be defined in a similar manner. |
| | I got bored and started some scripting the other day in PHP, this is just a sample that i wrote, just uncomment the part of script that you would like to see. IE remove the /* and */ around a certain area. i know its not great, but some beginners … |
| | This Python code allows you to get selected statistics of a story text. It will count lines, sentences, words, list words and characters by frequency, and give the average word length. It should be easy to add more statistics using the dictionaries created.  |
| | Generators are essentially dynamic sequences, making their official debut in Python 2.5. That got me to thinking: can we make a circular list with them? Why yes, we can... |
| | You can alternately show one of two lines drawn on the Tkinter canvas by simply moving them on and off the canvas screen. This beats a cumbersome create and delete cycle. |
| | In a recent discussion these code snippets were developed to replace Convert.ToInt32 and Convert.ToDouble. The person I was helping had a very large number of conversions to do. In our tests, using these 2 routines we were able to do over 1 million conversions in less than half the time. … |
 | # Have you ever tried using the String.Compare method for a case-insensitive string comparison? # The [documentation](http://msdn.microsoft.com/en-us/library/zkcaxw5y(v=vs.100).aspx) on MSDN for the overloaded method: 'Declaration Public Shared Function Compare ( _ strA As String, _ strB As String, _ ignoreCase As Boolean _ ) As Integer states `Compares two specified String …  |
| | A closer look at the Tkinter GUI toolkit Toplevel Window and how to lift and lower it respective to other windows. |
| | Comparing a number of different approaches to finding the closest pair of numeric elements in a list. The timing is done with the mpmath module, but you can also use Python module timeit.  |
| | Python is entirely object oriented and using classes is made relatively simple. Beginners have a certain angst when it comes to using classes. There is a hump in the learning curve, which I like to overcome with this example. Inheritance really makes sense and saves you a lot of extra … |
| | An approach to create multiple GUI buttons (or other widgets) using list comprehension. In this case I used the Tkinter GUI toolkit that comes with the Python installation. |
 | Below is a documented code example showing how to use the SQLite3 class to connect and query your database (and check for errors). IMHO using PDO is a better alternative, as this extension uses mixed technology in a non-standard way (objects, arrays and exceptions). If there are any questions let … |
| | Below is a documented code example showing how to use the SQLite functions to connect and query your database (and check for errors). Please note that using the SQLite extension is NOT RECOMMENDED. This extension is no longer available in PHP 5.4.0. If you want your scripts to be future … |
| | This demo will show a PHP script using a Smarty template. It assumes basic installation. In the folder where you copy the script, there should be a smarty folder containing the Smarty files. You should create a writable `cache` and `templates_c` folder, and a folder called `templates` where the `.tpl` … |
 | Circuit, [Circuit Diagram](https://picasaweb.google.com/116591322380497799116/December52012#) Video: [Video](http://www.youtube.com/watch?v=qGoM_ydAtBc) |
| | A simple way for using templates in php new pages can run server side code or pretty much do anything you would normally want to do on a web page First create your template. cleary there is way more that can be done with this, I've kept it simple for … |
| | Hi All, In my opinion, this is the best way to read in text from a csv file. Take for example if you are importing addresses: "1 Main Street","SmallTown","SmallCounty" The above is fine and easy to parse in BUT what if an address like this was entered: "App 1A, Tall …  |
 | LINQ is a great extension to the C# language! But it can be terrifying at first. So here is a little snippet just to get your feet wet. You would normally use some sort of looping here. See how easy it is to get some values from an array. Enjoy |
| | Just a small example showing how to draw circles with PySide (public PyQT). I used LightShot to capture the display, which gives you a link to the picture. http://prntscr.com/kw6b6 |
 | Often we're faced with the need to represent primitive data types as readable/writable bytes that can be sent through a data stream. In Java, there are classes such as DataOutputStream/DataInputStream that can do the work for us, but often a programmer wants to manage the conversions himself (or herself, to … |
 | I bet all Computer Science related courses would learn low level or machine level languanges in due time and in our university we used the portable 80x86 assembler NASM for our Assembly code So here's my experimentation on how to use "functions" and recursion using a Fibonacci Solver as a … |
| | Let's say you have a whole bunch of nicely named lists and want to save them all and their names in a pickle file. One solution can be to store these lists and their names in a Bag container class and pickle the bag instance object. Now you can use … |
| | Input the minutes, then the seconds, and it will do the rest. Pretty simple but I just thought I'd post it. Made as a quick test for my game. |
| | I thought i would share this with the community wrote most of it in school but the ai i wrote at home enjoy! |
| | to create a new comboBox when you post your form checkbox_name will contain the selected value $(document).ready(function() { var cb = "checkbox_name"; comboBox(document.getElementById(cb+"CB"), cb); var sel = myForm.elements[cb+"_hold"]; sel.length = 0; //add options sel.options[sel.options.length] = new Option("text", "value"); }); <div id="checkbox_name"></div> |
| | A real useful piece of code, hence I put it under Z. It does nothing but open and close the door of the CD-ROM player, and pushes the tray in and out. Should your coffee be too hot, you can put it on the moving tray and cool it off! …  |
| | This python 2.7 snippet adds a thin layer of sugar on the itertools module's api, allowing many of its functions to be used as decorators and adding some new functions. Enjoy ! |
| | If you have a smaller image, you can include it in your program as a base64 encoded string. This way you don't have to worry about an image file to go with your code. In your program you can then decode it back to the familiar bytes of an image …  |
 | Well, I have just made this funtion that will split an array using a delimiter. I'm new to C++ so I will take any suggestions you have. Anyhow, good luck! Enjoy! |
| | These are codes that do absolutley nothing, except to show whart you can do with to much time on your hands. Oh the silliness |
 | The code in this snippet (and attached project zip) demonstrates how to use a background worker thread to monitor a network address (name or IP). It shows how to start and stop the thread and how to update controls in the main thread using delegates. It should be simple to … |
 | I have a project to calculate simple moving average of a data, and the data contains over 4000 values. And requires me to skip the first 14 days and calculate the simple moving average on rest of data. I never experience use moving average and ask me to use LINQ … |
 | This is my solution for generating prime numbers. With this code hopefully you can generate prime numbers with incredible speed. The generated numbers will be stored in a text file titled as "Primes.txt". I have a dual core machine, but this program does not support dual core architecture, so it … |
| | Now that MITx first test is over, I got feeling that this one task requested for generate and test solution is begging also for less efficient recursive solution as it is so simple. Here it is! Single liner aproved by the released grader! If you wander if you are able … |
| | For anyone who likes to do something with sets in C#, this can be a starting point. The full project (VS 2010) is also included. Have fun with programming! |
| | Python experiment to get an image from a web page and save it to an image file. Updated code to work with both Python versions ...  |
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