Coding Musings

Trying to share some code ideas

logo

Author: Michael_M (Page 2 of 3)

WebGL – Rotating Cube

In this posting I will again be using WebGL.  However as opposed to just drawing a triangle and doing a gradient fill, which you can see here.  Gradient Triangle.

The code listed below will use WebGL to draw a cube and make it rotate.

WebGL Rotating a Cube

Read More

WebGL – Hello World

WebGL is really a fascinating topic to me. Being able to utilize the power of a local machine’s GPU via the web browser is a very novel concept.

If one was to ask back in 1996 would you be able to render Open GL code in a web browser via  GPU, even the most tech savvy may have replied, “Open GL? GPU? what are those things, you speak about?”

WebGL Hello World

Read More

Class for Parsing NGrams

Train an NGram Model

Will take the ngrams, reading and writing from the SQLite database and train the model utilizing Katz-Backoff methodology on the likelihood of the next word.

See code below

Read More

File Handler for RDS Formatted Files

File Handler for RDS Formatted Files

Using a list, load RDS formatted files into standard data frame. Allows for grouping multiple files into one data frame for processing.

See code below

Read More

SQLite Interface Class for R

SQLite Interface Class for R

I wrote an interface class to help with working with the SQLite database.

Methods include, selectQuery, updateQuery, readTable, writeTable

 

see code below

Read More

Binary Search Tree – Is BST?

Binary Search Tree

Traverse the tree in natural order and test if each node is between the previous and the next node. Properly detect duplicate values. If a wrong sub-tree is encountered immediately stop the script and indicate the error.

See code below

Read More

Merging Tables

Simulates a sequence of merge operations with tables in a database.

See code below

Read More

Fractional Knapsack

Standard problem of trying to maximize the values of item with a constraint.  How many items can you put in a knapsack given the value and the weight of the items.

Uses python3
goal: maximize the value of items selected from the get_optimal_value
while the items selected combined weight is less than the inputted capacity

Read More

Binary Search

Binary Search Problem

Function below handles a simple search for a needle in a haystack using the binary search algorithm.

The function is called recursively to check if a value is inside the array

See python code below.

Read More

Datatype Cast in T-SQL

“Making a square peg fit into a round hole”

There are many times when dealing with data that you need to transfigure one data set to allow for comparison purposes.

SQL has built in functions that easily allow us to transfigure data. There are some considerations when using the functions, most importantly understanding what will happen to the data set during the process.

Today I will talk about the CAST function.

Read More

Page 2 of 3

Powered by WordPress & Theme by Anders Norén