In idle conversation I was asked by MM.
Question: What is the maximum number of colons ‘:’ that may appear in a valid URL?
If you said zero to one, then you are victim of browsers, and you have never used anything but a browser.
If you said one, then your a novice.
If you said two, then you have probably seen http://host:port at some time.
If you said three, then you would be correct, the elite.
http://user:pass@host:port/location
For the record my initial answer was 2.
The Chi-Squared test is one of the most widely used statistical tests for categorical data. It comes in two flavors: the goodness-of-fit test asks whether an observed frequency distribution matches an expected one, while the test of independence asks whether two categorical variables are associated with each other.
I am excited to be speaking at COSCUP 2026 in Taipei, Taiwan on August 8th and 9th. COSCUP (Conference for Open Source Coders, Users and Promoters) is one of the largest open source conferences in Asia, and it is always a privilege to present to the engaged and technically sharp community there.
The two sample t-test for equal variance is a statistical test to determine if the means of two groups are different enough that the difference is likely caused by some underlying difference, rather than random chance.
