Notes on codes, projects and everything
Generally, library holds a wide variety of reading materials and providing ample space for quiet study. A full range of services is provided in a library, such as loan, reservation, inter-library loan, reference, online resource, document delivery, photocopying, audiovisual and microform materials.
Initially, the library transactions are handled manually by the library staff. The references are stored using the filing system. This tradition method has raised many inconveniences to the library staff.
Hence, you are required to do some research on the problems that faced by the conventional library management system, and then develop a computerized library system by using the ASP.NET.
A master page is used to set up a consistent look and feel to the website. However, since it is not being discussed in class, therefore we had got to learn that ourselves. We implemented a simple master page to the website and separate the layout and data presenting element using a stylesheet file. The tool used to develop the assignment is Visual Web Developer 2005 Express Edition.
Following included are the screenshots for some main functions.
Traversing a tree structure often involves writing a recursive function. However, Python isn’t the best language for this purpose. Therefore I started flattening the tree into a key-value dictonary structure. Logically it is still a tree, but it is physically stored as a dictionary. Therefore it is now easier to write a simple loop to traverse it.
A few years ago, I was asked to build a game or simulation (alongside 2048) as a part of a job application. Being very impressed with Explorable Explanations, I implemented Conway’s Game of life with Javascript and jQuery (that was before ES6 became popular). Then I made a very simple grid maker jQuery plugin to dynamically generate a grid of divs. If you check the source code, you may realize I rely on Underscore.js a lot back then.
(more…)Often times, I am dealing with JSONL files, though panda’s DataFrame is great (and blaze to certain extend), however it is offering too much for the job. Most of the received data is in the form of structured text and I do all sorts of work with them. For example checking for consistency, doing replace based on values of other columns, stripping whitespace etc.
When one start writting Javascript in patterns like the module pattern, then sooner or later he would want to maintain the state when an event handler is called. The reason I am still using YUI to handle my event handling code is because I like how state can be maintained.
It is very much expected that there will be endless stream of new (and often times better) tools introduced to solve the same set of problems. While I am slowly resuming my programming work, and in the process of reviving my very much dead postgrad project, I found some alternative to the tools I had used in the past. I suppose I shall just jot them down here so that there’s a reference for later use.