I was about to be late for my condensed matter physics class, and suddenly the chain on my bike dropped. I cannot have worse luck today.
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DSL means domain-specific language. Ruby is a powerful script language in terms of building DSLs (as sublanguages of Ruby). In this article, I implemented my idea of a DSL with commands split by space. For example, you may just write
a b cto run the commands
cone after another! This trick is heavily applied in my project alda-rb. How do I achieve this?
I have got tired of letting GitHub Pages to run Jekyll for me. I cannot use custom plugins! I decide to run Jekyll myself and push the built result to GitHub repo. I wrote a script to do this.
Regarding balancing chemical equations, actually we are trying to find a non-trivial linear combination of some chemicals to get zero. The interesting thing is that the coefficients can only be integers (), which is not a field, so the algebraic structure of chemicals is not linear space. They actually live in a free -module. See how I formalize this idea in mathematical language.
A reversible elementary reaction takes place inside a closed, highly thermally conductive container of constant volume, whose reactants are all gases. Given the reaction equations and the reaction rate constants, a natural question to ask is how the concentration of each gas changes w.r.t. time. In this article, I will answer this question by proposing a general approach to solve it.
O, ’tis too true!
In this article, I present minimal examples of a RM game. They only illustrate the basic concepts of how a RM game is structured and what is the running logic of it.
This article explores the concept which I call the frequency assignment, which is a mapping from (the set of notes) to (the set of frequencies). Concepts such as octaves, intervals, and equal temperaments are introduced.
This article gives the formula for the normal vectors of a surface defined by a scalar field on . The normal vector of the graph of the function at is . This also provides us a way to recover a scalar field from the normal vectors of its graph: normalizing the vectors so that the last component is , and then integrate the rest components.
It is Feb 29 today. The date appears once for as long as 4 years!
Monkey-patching is a powerful tool in programming. In this article, I used techniques of Ruby metaprogramming to define a series of methods
def_before, etc. to help monkey-patching. They look graciously in that we can use it to shorten the codes for monkey-patching (avoiding aliasing and repeating codes).
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