Linked Questions
45 questions linked to/from when is f@g not the same as f[g]?
6
votes
1
answer
4k
views
Order of operations, precedence in Mathematica [duplicate]
I get confused in the order of operations in Mathematica.
For example,
f /@ 10^{1, 2, 3}
{10, 100, 1000}
In my head, that ...
- 1,751
3
votes
0
answers
2k
views
What does the @ symbol do in Mathematica? [duplicate]
I have the folllowing array
$$h = \left(\begin{array}{cccc}1 & 0 & 0 & 0\\
0 & f^2 & 0 & f^2 \cos\theta\\
...
- 411
0
votes
0
answers
206
views
The order of evaluations with nested slots [duplicate]
I tried to join a series of evaluations with nested slots as follows:
#^2 & /@ #^2 & /@ Range[10]
However, the results were somewhat different from what ...
- 341
1
vote
0
answers
129
views
Length[Range[5]] vs Length@Range[5] [duplicate]
I've looked all over the Wolfram Documentation and done various searches on the web and this site and I can't find an explanation of the single "@" symbol as a means of applying functions.
It seems ...
- 417
1
vote
0
answers
59
views
Chaining map and abstract functions -- when (and why) is parenthesization necessary? [duplicate]
I am a bit confused with how do some expressions in Mathematica get parsed. I was using a combination of map (/@) and abstract functions of the form ...
- 321
1
vote
0
answers
47
views
Getting different results form Tan[x] and Tan @ X [duplicate]
In the post How to Extract data points from plot in mathematica to redraw it with another program?, I found out Tan @ x and ...
- 655
1
vote
1
answer
55
views
Learning Shortcut Syntax - Newbie Question [duplicate]
I'm learning Mathematica in order to work with Linear Algebra. I found a good post here about matrix manipulation, but realized that the author used conventions that I couldn't find documented in the ...
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 ...
211
votes
24
answers
17k
views
What are some useful, undocumented Mathematica functions?
There have already been some questions about some undocumented functionality in Mathematica. Such as (please add to these lists!)
How can one find undocumented options or option values in Mathematica?...
40
votes
5
answers
1k
views
How to examine the structure of Graphics objects
One difficulty I'm encountering in studying the structure of Graphics objects is that I have not yet found a way to print or display such structures that are ...
- 11.7k
27
votes
2
answers
2k
views
Using a list of tuples in a pure function
I want to use a list of tuples within a function to make assignments.
Say I want to make assignments of the form
value[i,j] = val
What I have is a list of ...
- 13k
42
votes
3
answers
1k
views
Is there a name for #1@#2&?
Why does the pure function # @ #2 & have no name?
I'm asking because sometimes I find inelegant to write expressions like
...
Kuba♦
- 136k
30
votes
3
answers
1k
views
Parentheses in pure functions: # & vs. ( # &)
I've been using Mathematica for years, and over time I have developed the habit of using:
Select[data, (# == 1 &)]
instead of
...
- 4,396
35
votes
3
answers
1k
views
Prefix operator with low precedence
The question is simple, but I will elaborate on the background as well for those interested in the idea:
How to define a new operator with specified precedence value?
Background
Mathematica was ...
- 46.6k
29
votes
3
answers
6k
views
Difference between @ and @@
I am confused by the commands @ and @@. From the documentation, I learnt that @@ is the ...
user10568