adeelk

Joined 15 years ago

Karma

550

Submissions

117

Member since

Sep 3

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Recent submissions

Comment · 14 years ago

Sure, but verroq was talking about vector spaces and linear maps, not matrices. The theory of vector spaces over a field is more general and can be applied to much more than systems of equations.

Comment · 14 years ago

> Someone who has never seen the type of problem that would make a given abstraction useful would not be able to understand it easily.

Whether or not someone is sufficiently motivated to study something should not affect their ability to understand it. Vector spaces and linear maps are actually much easier to understand, and I think that at some point in mathematics (probably your first analysis course) your motivation has to come from the beauty of the theory itself rather than some real-world application.

Comment · 14 years ago

As is often the case, the way to get the intuition here is to just work out the computation. Once you do that, it should all "click".

Comment · 14 years ago

What in Clojure is biased towards web programming (or any other domain)?

Comment · 14 years ago

> About one in four adults suffer from a diagnosable mental disorder in a given year. That means if you think about your 10 favorite people in the whole world two of them could be at risk of suicide.

No, that means on average, an arbitrary set of eight adults contains two with a mental disorder. (Presumably this refers to adults in the U.S.)

Comment · 14 years ago

> That's like saying, "If we start putting people in jail for using illegal drugs, people will eventually stop using illegal drugs." Unfortunately that's just not how it works

If you believe this, then what is the purpose of putting illegal drug users in jail?

Comment · 14 years ago

> The issue isn't that people are voting up comments or submissions that don't fit with what HN is supposed to be, the problem is that those submissions and comments are being made.

If people stop voting up such comments, people will eventually stop making them.

Comment · 14 years ago

> Mostly, when I come across complex equations in CS papers, I tend to skip over them and only go back to look at them if there are parts of the paper I can't make sense of without them - it is very rare to find that they are necessary at all.

Obviously any equation can be expressed in words, but those who are familiar with the notation are able to read the equations and understand the ideas in a paper in a fraction of the time. This is important for those who read papers regularly.

Comment · 14 years ago

Dear kristianc,

You are comparing en.wikipedia.org with their redesign of www.wikipedia.org. Notice that the latter is, with respect to content, the same as their redesign: languages, search, and sister sites.

Secondly, in the screenshot you are looking at, the content of the article has obviously pushed down due to the activation of the “quote” mode. Honestly, I doubt you do not realize this and I can’t help but wonder what motivation you have to criticize their work so unfairly.

Comment · 14 years ago

The funny thing is that most of these APIs wind up with what's essentially a "this" pointer at the front of every argument list so you're really doing OO anyway.

Do you have much experience with non-OO programming? Or even OOP, for that matter? How can one honestly believe that every instance of passing data into functions is automatically OOP? Did you even consider the fact that this has nothing to do with objects?

Time objects are a really bad example because time calculations are exactly the kind of hairy mess you want to hide behind some kind of abstract API.

You miss his point here. Time not being an object would not imply that it can't be abstracted into an API. Just see Clojure's clj-time library for an example.