It's so easy to become mesmerized by the immediacy of a result that you don't question its validity.
I am doing a startup!
Cross-browser testing from your browser!
I have written my fourth book!
Be faster than Larry Wall in the shell!
You're replying to a comment by atehwa.
In the section "Check whether two files contain the same data", there is the claim that the awk solution is O(n). However, this is dependent on the associative array entry creation and lookup being amortised O(1). Surprisingly many utilities don't use such associative arrays but instead have O(n) behaviour for sufficiently large data. This can be caused by e.g. static hashtables or hashtables that resize by a constant amount.
If the hashtable implementation _is_ good, then the solution's linearity depends on loading all data into memory. If insufficient memory is available, sort is often a faster alternative. However, this depends on many factors.
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It would be nice if you left your e-mail address. Sometimes I want to send a private message, or just thank for the great comment. Having your e-mail really helps.
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Peter Krumins' blog about programming, hacking, software reuse, software ideas, computer security, browserling, google and technology.
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I love to read science books. They make my day and I get ideas for awesome blog posts, such as Busy Beaver, On Functors, Recursive Regular Expressions and many others.
Take a look at my Amazon wish list, if you're curious about what I have planned reading next, and want to surprise me. :)
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