Questions on how to write code in a better or different style, using Mathematica's capabilities for coding in multiple styles.

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7
votes
4answers
2k views

Alternatives to While Loops?

I am using Mathematica to run a probabilistic simulation. Essentially, I have a list of members of a population (they only have one, numerical, attribute, so it's just implemented as a list of ...
15
votes
2answers
607 views

Notebook formatting - easier descriptions for equations and results?

When I do computations in mathematica, I generally try to make it readable for myself-in-the-future. This can be a cumbersome task in mathematica, where it often requires me to switch betwee a text ...
24
votes
2answers
1k views

What are some advanced uses for Block?

I read the answers to this question (What are the use cases for different scoping constructs?) and this one (Condition, Block, Module - which way is the most memory and computationally efficient?). ...
9
votes
1answer
224 views

What is the purpose of Dump contexts?

Motivation I've been trolling through some internal code, trying to glean design practices WRI developers employ when extending Mathematica using top-level code. During my ...
8
votes
2answers
975 views

Speed up Mathematica code involving Convolve

I'm trying to plot the averaged autocorrelation function of a random wire profile $\xi(x)$ which is build from unitsteps which are each L units long. To calculate the average I'm generating nMax ...
6
votes
0answers
121 views

What are some general strategies to avoid using For loops? [duplicate]

Possible Duplicate: Iterating over lists in Mathematica While there are some cases where a For loop might be reasonable, it's a general mantra – one I ...
13
votes
2answers
746 views

What's the most “functional” way to do Cholesky decomposition?

I can do Cholesky in a procedural style, such as: ...
14
votes
2answers
947 views

Speeding up random walk for many particles

I am trying to speed up this code for many particles to take a random walk. I'm not sure why it is so slow for such a simple task. I got a few hints from colleagues to reduce the precision of the ...
10
votes
3answers
484 views

Are these nested Tables necessary?

In exploring this fish population game with my calculus students, I wrote some Mathematica code to search for the sequence of catches that would result in the maximal total population of fish (both in ...
13
votes
4answers
415 views

Short syntax for accessing System`Utilities`HashTableAdd and System`Utilities`HashTableGet

I have a need for a struct analogue in Mathematica. After reading this post I came to the conclusion that System`Utilities`HashTable is one of the best options. But ...
15
votes
2answers
574 views

Are there advantages to using generalized Part extraction instead of specialized functions like First, Last?

There are many ways to extract different parts of lists in Mathematica. For example, the first part of a list v can be accessed either as ...
9
votes
3answers
386 views

Can this code be written in a more functional style

Referencing this question, I wonder if the following code can be written more concisely using a functional style, i.e. without For loops or ...
27
votes
3answers
3k views

Extracting values from nested rules in JSON data

I have been using Mathematica to analyse some data from the StackExchange API. It is conveniently available in JSON form, which Mathematica interprets as replacement rules. However, some of the rules ...
16
votes
1answer
409 views

Are there advantages to using additional arguments of common functions rather than alternative ways of calculating with lists?

(Apologies for the long question title.) One of the interesting, if sometimes confusing, things about Mathematica is that there is always more than one way to do things. Even intermediate users can ...
5
votes
1answer
321 views

Alternative to overloading Set

In the ideas shared in my answer to this post Struct equivalent in Mathematica? at the end I propose a solution that changes the way Set works in a particular case that can be expressed in plain words ...
91
votes
7answers
10k views

Struct equivalent in Mathematica?

I really miss having something like a struct in Mathematica. I know of (and regularly use) a couple of programming techniques which feel like a ...
13
votes
3answers
483 views

With versus Function

I've seen people compare Block with Module and With as scoping constructs, and try to figure ...
47
votes
5answers
921 views

Placement of Condition /; expressions

It is my practice to place Condition expressions on the left side of := and :> in almost ...
138
votes
3answers
26k views

Alternatives to procedural loops and iterating over lists in Mathematica

While there are some cases where a For loop might be reasonable, it's a general mantra – one I subscribe to myself – that "if you are using a ...