This Problem of the Week involves determining the identity of a well-known mathematical function by examining the algorithm used on the input number to produce the output. The function will only accept integers that are greater than or equal to zero. The following is the mathematical definition of the function: Function Definition Condition Read more…
New & Improved Definition Last year I wrote a version of this function which was to mimic the Python expandtabs function. The funny thing is I didn’t remember that I wrote the function in the first place. Therefore while working on a project, I wrote the following function which is Read more…
It has been a while since I wrote a JavaScript utility function so a few minutes ago, I had the idea to create a function which will allow you to set the default value of a parameter for any given function. After writing the following function, I thought about the Read more…
There have been many times when I needed to simply modify the flags (options) for a regular expression in JavaScript. Unfortunately, the global, ignoreCase, multiline, and sticky (for FireFox) flags are immutable. In addition, when creating a new regular expression from an old one, you can’t supply a regular expression Read more…
I was writing two HTAs (HTML Applications) today and for the first one, I needed to create a VBArray with the number five in it. Fortunately, I remembered that I wrote a page about this prior to my blog. Therefore, here is the snippet which I plan on including in Read more…
One of the cool things about JavaScript 1.7 is the fact that it supports generator functions. Unfortunately, not all browsers support generator functions yet. Therefore, when creating iterators we can look to an interesting alternative: closures. For example, if our goal was to make a String prototype function which would Read more…
Recently, I have been interested in creating a quick one-way encryption method. After playing around with a lot of different variations, I settled on the following: One nice thing about this function is the fact that you can restrict the encrypted message to a certain length. Another interesting thing is Read more…
Did you know that the bitwise operators always return 32-bit (signed) integers? If you don’t believe me, test out the following examples for yourself:
Recently, I had to create a PostgreSQL equivalent of the Java hashCode() function. In order to do this, I needed a way to make sure that numbers that exceed the INTEGER representation (ranging from -2^31 to 2^31-1) will be wrapped. In JavaScript, this is as simple as using the logical Read more…
The following is a function which returns the chainable version of a function: Here is an example of how to define a pseudo-class which uses this chaining method: Here is an example which shows that the chaining works as intended: