Linked Questions

2
votes
0answers
128 views

Split one string about a fixed width with `SyntaxQ=True` [duplicate]

How to split one string about a fixed width, the string may come from the input or output cell of Notebook. sample string ...
523
votes
19answers
129k views

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 ...
100
votes
7answers
5k views

What is the most convenient way to read definitions of in-memory symbols when we don't have the source files? (Spelunking tools)

Note: I put Simon's implementation on GitHub. Contributions welcome! When trying to read the definition of already defined (package or built-in) symbols using ...
88
votes
2answers
7k views

Shaving the last 50 ms off NMinimize

The epilogue: A paper where the below answer is used was published. The answer below is cited among the references:) The background: I have to fit an objective function for ~10 000 datasets in near ...
70
votes
3answers
3k views

The clearest way to represent Mathematica's evaluation sequence

WReach has presented here a nice way to represent the Mathematica's evaluation sequence using OpenerView. It is much more clear way to go than using the standard <...
44
votes
6answers
2k views

Creating cross-version compatible documentation with Workbench

Wolfram Workbench allows you to create documentation for your own packages that is similar to the build-in documentation center. Integrating this type of documentation with the documentation center is ...
12
votes
7answers
4k views

Recursive function with if-statement

I am trying to represent the following function definition in Mathematica: $$\begin{align*} f(1)&=1 \\ f(2n)&= \begin{cases}f(n) & \text{if}\space n\equiv0\pmod{2} \\ 2f(n) & \text{if}...
21
votes
3answers
4k views

Collapse a section of a huge function

Is there an elegant way of hiding/collapsing/folding only a portion of a function? If functions could span multiple cells, this would have been straight-forward!
21
votes
3answers
627 views

Tokenize Mathematica input in a simple way

Background Usually, I give detailed descriptions when I have a question which sometimes lead to that users don't write their answers because they maybe think their answer is too simple. Therefore, I ...
9
votes
3answers
535 views

How to do this type of percentual stacked plot in Mathematica?

I have data of letter occurrences in different positions. I want to plot the frequency of each letter in each position. The type of plot I have in mind is as follows: How can I do this in ...
9
votes
3answers
186 views

Metaquestion: how to find out why (e.g.) MatchQ[42, _?Function[x, True]] is False?

Suppose you run into a bewildering Mathematica result (which happens to me several times per Mathematica session, even after a 20-year acquaintance), such as, for example: ...
9
votes
2answers
973 views

Developing domain specific languages and computational knowledge engines using Mathematica

In one of Leonid Shifrin's excellent summaries, he mentioned that MMA capabilities include developing Domain Specific Languages (DSL). I'd like to develop a Health care IT application that can ...
9
votes
1answer
2k views

Improving the source-code indentation in Wolfram Workbench

One thing that I like about the more recent versions of the Mathematica front-end is that I think it does a good job indenting code. The language's functional nature, in my experience, leads to a lot ...
6
votes
2answers
687 views

Tabs inside expression to format code

In a similar spirit to a question proffered several days back,and as that question stated, Since the front-end is quite extendable my question is... Does the front end provide any way to use ...
6
votes
2answers
326 views

Add semicolon at the end of code line programmatically

Suppose we have several lines of code in a cell: a b; Module[{}, c d] e How can we wrap them in a CompoundExpression i.e. ...

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