Linked Questions
62 questions linked to/from How do I evaluate only one step of an expression?
3
votes
1
answer
127
views
Can evaluation show what was evaluated along with results? [duplicate]
After I write and evauate the following lines in Mathematica:
a = 1
b = 2
x = a + b
It will show only the result : 3. I want mathematica to show the following ...
- 31
0
votes
0
answers
230
views
How to evaluate only arguments, but leave topmost expression unevaluated? [duplicate]
I want to represent expressions mostly in unevaluated form, but being able to evaluate it's subparts.
For example, how to evaluate only arguments, but leave topmost expression unevaluated?
For ...
- 2,023
0
votes
3
answers
159
views
Partial evaluation of a function [duplicate]
In the spirit of a previous question, this is a self-assigned exercise in order to understand how we can control expression evaluation with Mathematica.
So, given the following function definition:
<...
- 1,469
597
votes
19
answers
154k
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 ...
44
votes
8
answers
9k
views
How to apply or map a list of functions to a list of data?
Say I have a group of functions:
f1[a_] := a * -1;
f2[a_] := a * 100;
f3[a_] := a / 10.0;
and some data in a list:
...
- 24.2k
104
votes
2
answers
7k
views
Is it possible to define a new PlotTheme?
In version 10 one can define, say,
$PlotTheme = "Scientific"
Which changes the appearance of all plots. This is fantastic because on the one hand I can have nice ...
- 7,317
22
votes
9
answers
3k
views
How do you check if there are any equal arguments(even sublist) in a list?
I would like to set up a function which has to return True if at least two arguments of a given List are equal.
So if I give {1,4,6,2} to the function it has to ...
- 715
43
votes
4
answers
3k
views
Compiling more functions that don't call MainEvaluate
I would like to use Compile with functions defined outside Compile.
For example if I have the two basic functions ...
- 11k
54
votes
2
answers
10k
views
How to access new colour schemes in version 10?
Many colour schemes and colour functions can be accessed using ColorData.
Version 10 introduced new default colour schemes, and a new customization option using <...
- 233k
13
votes
6
answers
1k
views
Elegantly split a matrix into positive and negative parts?
I have a matrix $M$ of real components, and I want to split it into two matrices $M^+$ and $M^-$ of the same dimensions as $M$, where $M^+$ contains the positive components of $M$ (the remaining ...
- 11.1k
37
votes
3
answers
994
views
Can we intelligently control evaluation in Thread?
This is a bid at creating a canonical Q&A.
Many questions have been asked that come down to the fact that Thread evaluates its first argument before threading ...
- 270k
19
votes
6
answers
2k
views
How can I evaluate only a single step of a recursive function?
Let's say have a simple recursive function for the Fibonacci sequence
f[0] := 1
f[1] := 1
f[n_] := f[n - 1] + f[n - 2]
but I want to see how it will expand in a ...
- 387
14
votes
7
answers
904
views
How to properly inject iterators into table? [duplicate]
Goofing off on a prior question, I was fiddling with other methods, which led me to the need to inject a constructed set of iterators into a table construct.
Now,
...
- 25.6k
36
votes
2
answers
2k
views
Specifying non-conflicting PlotTheme options
A bug or limitation in 10.0.0 affects a few of these examples; it was resolved in 10.1.0.
I am trying out Mathematica 10 on https://programming.wolframcloud.com. ...
- 7,317
19
votes
3
answers
990
views
Generating assignments and transforming code inside held forms when generating code
I have been playing with slightly above trivial code manipulations in Mathematica. I thought Mathematica would be great for this kind of work because of rule replacement and expression manipulation, ...
- 423