Just a simple check to make sure that a person's email address matches their domain.

For example .. in a form you have 2 textboxs .. 1 for their website url, the other for their email address. This checks to see if the domains for the email address and the website url match.

Send Basic Email

CDONTS Mail

Makes sure the email addresses with IP addresses are not private network addresses. Allows multiple sub-domain levels. verifies characters within domain names. only allows standard length 26 characters for each domain name level, except the top (3 max)

From time to time you may have reasons to override the default find method that ActiveRecord provides. In this example, we'll store a side-copy of the record attributes so that we have some basis for discovering changes to the data.

note: this will not override dynamic finders such as find_by_id

A quick implementation of an encrypter which can't be cracked by frequency analysis.

The decrypter for the simple encrypter I posted earlier - Takes the encrypted text from a text file - "encrypt.txt" which the encrypter automatically writes to.

A simple algorithm to convert decimal numbers to binary; pointless since most languages have an inbuilt function but was used for learning about algorithm design.

Directory Utility for Ruby

By default, migrations will run on the development environment. Here's how you would specify another environment.