Linked Questions
14 questions linked to/from Quick way to use conditioned patterns when defining multi-argument function?
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Apply a test function to variable arguments [duplicate]
I want to provide a function f[x_,y___] which applies a pattern matching test also on the optional parameters (e.g. request that they are vectors of numerical quantities).
In case of one single ...
- 2,848
2
votes
0
answers
48
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Apply same type checking to every argument [duplicate]
Consider the following function which takes 10 arguments.
f[Io_, {θ_, ϕ_}][{x0_, y0_, z0_}, d_][h_][L_][ω_]
I know that all of these are of same type. I would ...
- 5,019
604
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19
answers
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Where can I find examples of good Mathematica programming practice?
I consider myself a pretty good Mathematica programmer, but I'm always looking out for ways to either improve my way of doing things in Mathematica, or to see if there's something nifty that I haven't ...
84
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4
answers
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Using a PatternTest versus a Condition for pattern matching
My last question to the site resulted in several answers that involve using pattern matching in Mathematica, a feature I wasn't very familiar with at the time. I am currently reading Mathematica ...
- 1,175
19
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5
answers
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Implement the Bisection algorithm elegantly and easily
Description:
Rencently, I have finished my course Numerical Analysis, so I'd like to implement many algorithm that I have learned from that course.By this practice, I hope that I can improve my ...
- 655
16
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4
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How to check the style and number of arguments like the built-in functions?
Given that I have a function sqrt[x] that I must check the style and number of argument x.
I can do like this:
...
- 655
8
votes
2
answers
626
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return {} when the function is given {}
I have a function taking an array as argument and giving an output. However, sometimes my argument is {} (the empty array), then how can I get an output {} when my argument is {}? Actually, I want the ...
- 687
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4
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Define Function with Sum over a list
I want to define a function that would symbolically look like
$$
t(s,\underline{a})=\pi s + \sum_{n=1}^{n_{max}}a_n\sin(n \pi s)
$$
(something like a finite Fourier series). Here $s\in [0,1]$ and $\...
- 81
9
votes
4
answers
428
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How to avoid repetitive calculation when doing numerical integral?
Suppose I have a function f[x] which is very complicated, together with a function g[f[x]]+h[x] to integrate. That is:
...
- 1,755
5
votes
1
answer
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Why does pattern test not work in this case to restrict the function parameters?
I was looking at this Q&A about using pattern test (pattern_?test) vs pattern condition (pattern_/;cond) and came across ...
- 5,191
1
vote
1
answer
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How can I define a function that takes a list of reals?
I'm trying to define a function f which takes a list of reals. My purpose is to build a function which I can give a list of reals, integers or strings and have it ...
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1
vote
3
answers
293
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Defining functions when there are a lot of parameters
Suppose I have two lists of parameters: $\delta=\{\delta1, \delta2, …\}$ and $\gamma = \{\gamma1, \gamma2, …\}$.
The question is: how can one use $\delta$ and $\gamma$ (the parameter vectors) within ...
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4
votes
1
answer
145
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What is wrong with my code so it neither produces a correct plot nor an error message?
I am trying to define some initial functions and then using them to define my secondary functions and then plot the secondary functions. I am supposed to get two curves with a finite width ...
- 347
2
votes
1
answer
120
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Generic templating system
I'm trying to implement a templating system in Mathematica, a bit like the List<List<T>> you would find in C#.
Here's how it looks so far:
...
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