Topics by xrjf

**Features:** * Retrieves the differentiating bit of a key with respect to the previous one and stores only this position in the index. * With at most one single disk read, assuming the index is in memory, it determines whether the key exists or not. * The index is always …

Here I present a WebSite containing just Default.aspx. Current snippet code has to do with coloring text in an input field of a web page. The input field is an editable DIV HTML element. While the user writes, there is a partial post (an XMLHttpRequest) to the server. Then the …

The present code snippet just does an especific task. This is, given an ordered sequence of natural numbers, starting at zero, generate all the different permutations there can be. When we talk about permutations, the order of the sequence does matter. So, the sequence 0, 1, 2 differs from 2, …

Suppose we need to populate and filter a Datagrid with the data coming from an Access table. It could be of course a table from Sql Server also. Form dataGridSelect contains two buttons and a DataGridView. Clicking the first button will populate the DataGridView the data comming from a Sql …

Have you ever wanted to develop a math parser and evaluator? Are you in such a quandary or just have curiosity or interest in the matter? If so, you may download the complete source version 8.3.48 or later, but be warned there is almost no comment; or instead, follow versions …

By means of Mates8, graph coding becomes a bit easier. The web page has four textboxes so the figure gets bounded to the left, right, top and bottom; and a draw button. Additionally, a panel control will contain the image generated by the code after the button is pressed.

The days when the calculator had almost 3 thousand visits a day have gone. Since then, there have been several major versions and lots of minor versions. Somehow, I feel pleased in that the present core algorithm follows the rules of the first I read; of course, extending the simplicity …

Saw this thread today: http://www.daniweb.com/software-development/csharp/threads/448676/derivative-integrals You may download the (free) source code from here http://xrjunque.nom.es/precis/swdownload.aspx Need to say it's all vb.net, but you can easily have a .dll (all the 'machinery' is inside a folder: just complile as a .Net's .dll). Then, to derivate say 'cos(x)': dim strToDerivate as string …