Questions tagged [contexts]
Questions about contexts, which are used in Mathematica to organize defined symbols and avoid conflict between symbols that would otherwise have the same name. They are created when packages are loaded.
214
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Problem defining Function inside Module to verify ODE solution [duplicate]
I modified the question. It turns out this problem has nothing to do with using a package. New style or standard style./
Same problem shows in a normal module in notebook.
This is the most bizzar ...
- 149k
6
votes
1
answer
236
views
On the new package style. Conflict using the same name in the parent and in the child packages
I am learning the new package style as current one is not working for me. I know it is probably not a good idea to use something with no official Wolfram documentation and not officially released. But ...
- 149k
4
votes
2
answers
222
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How to keep private package function private when adding package name to function name inside the package?
I like to call my package private functions using
mypkg`functionName[...]
i.e. add an explicit mypkg to each call. This ...
- 149k
3
votes
1
answer
102
views
How to make my OOP class work inside a package?
I like to use this simple OOP setup in Mathematica that I learned from reading posts here over the years and playing around with it. This makes a Class and implement basic OOP (nothing fancy like ...
- 149k
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23
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2
votes
1
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70
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How do I make all the external contexts accessible within subcontexts of my package?
I have a package file MyPackage.wl it has the following commands:
...
- 9,651
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1
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127
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How do contexts work exactly? Is there anything special about Private` or Internal` context?
Suppose I begin a package:
BeginPackage["MyPackage`"];
Before running this command in a fresh kernel, the context and path were:
...
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5
votes
1
answer
139
views
1
vote
0
answers
41
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Autocomplete for package in notebook with context "Unique To This Notebook"
I have the setting that my notebooks their context is unique for each notebook to avoid accidental lingering definitions. I really need this because I'm often distracted and e.g. overwrite files when ...
- 1,620
3
votes
1
answer
119
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Autocomplete doesn't work when the CellContext is set to be Notebook (Mathematica 13.3)
I am using mathematica 13.3. When the CellContext option is "Global" the autocomplete works fine. I would like to have individual variable in each notebook, so I use the following command:
<...
- 311
2
votes
2
answers
112
views
4
votes
0
answers
82
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Temporary symbol leaks into public context?
This phenomenon has confused me a long time. Consider the following package example,
...
- 2,557
0
votes
0
answers
65
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Unable to use a function from Get with Encode
I am trying to create a proprietary function as discussed in this link:
How to distribute proprietary Mathematica code
So I create a function and dump it into a file
...
2
votes
1
answer
124
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Why does using a variable name as pattern name determine its context?
Checking the context of a fresh variable inside Begin-End, it gives the enclosing context.
...
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3
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2
answers
120
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Inconsistent behaviour of availability of variables when re-entering `Context`
I am quite confused about Context. I have a long semi-manual signal processing task. I already did that for one signal and I need to do it for another one. I want ...
- 4,006
2
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1
answer
128
views
1
vote
2
answers
107
views
How do I get all the contexts that a shadowed symbol is in?
I have some shadowed symbols. How do I list all the contexts that they are in?
For instance, consider symbol x which is in contexts: package1, package2
...
- 483
1
vote
2
answers
115
views
How to write Boxes to a notebook with NotebookWrite?
I would like to write Boxes to a Cell to a notebook (e.g., FractionBox, SuperscriptBox, etc).
Here is what I've tried:
...
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0
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0
answers
50
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Why Names will search all subcontexts?
My version is 13.2. When debugging I came across this peculiar feature of Names.
Starting with a fresh kernel, define
Then ...
- 2,557
2
votes
0
answers
60
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Predict Occurs in More than One Context - Mathematica v13.2
I am receiving an error message in Mathematica 13.2 that the system function Predict appears in more than one context: one of the definitions is shadowed.
This shouldn't be happening, of course.
In ...
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1
answer
71
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problem using package to verify solution of ode with Association, Naming scope/context handling [duplicate]
I learning how to use packages. I found a big problem. Here is description of the problem is, then a MWE is given.
This small package takes in an ode and ...
- 149k
0
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1
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82
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Why do we have to write context name when re-Begin[] a same context?
as the following picture shows, when I Begin[] a same context(same name), why i use the function yjn[](defined in the previous same name context) still have to write the context name?
similar ...
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1
vote
2
answers
138
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Is there a fast method of clearing symbols in the sub-contexts named by other symbols?
When writing packages I met the following problem. The way I name helper functions is like
...
- 2,557
1
vote
1
answer
145
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How can I use FeynCalc in ParallelTable or ParallelSum?
I want to speed up a FeynCalc calculation. However I found out that it doesn't seem to work in ParallelSum or ParallelTable.
MWE:...
- 1,441
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0
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23
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Replacing System` definitions in a context whilst still maintaing acces to them [duplicate]
Given the system operator TensorContract I can define a new one, TensorContractLazy with the attribute ...
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4
votes
2
answers
381
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The problem with "Symbol appears in multiple contexts" when loading package with same function name in subpackages
There is a similar question about this, 8 years ago!, but the answer there does not really give what to do. The answer just says yes one can use same function name in different packages but has use ...
- 149k
5
votes
1
answer
109
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How do I remove the context from help messages
When using ?? I get the results which the context included. While technically accurate it makes the code difficult to read.
The following
...
- 165
6
votes
1
answer
207
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Symbols leak into Global context when using Information
Bug introduced before 12.1.0, fixed in 13.3.0 [CASE:4972508]
When debugging I found the following peculiar behaviour of Information:
...
- 2,557
1
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0
answers
118
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What's the meaning of Global?
I'm calculating an integral,
Integrate[(t e^(-z t) e^(-q t))/(1-e^(-t)), t],
and the result is
...
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votes
1
answer
92
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Once[…, "location"] adds $CellContext` to all global symbols
For certain persistence locations, such as "Notebook" or "FrontEndSession", ...
- 235
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vote
2
answers
118
views
How to organise definitions that contain named parameters?
I have lots of definitions of (usually numeric) quantities that depend on parameters; they're mostly matrices (in the actual code, there are many more definitions):
...
- 235
1
vote
0
answers
35
views
How to make import and export (or equivalent) work with unique notebook contexts
I currently have my notebook's default context set to "Unique to this notebook", which is useful for when I'm doing multiple projects.
However, whenever I try to use e.g ...
- 31
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0
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138
views
Package Functions Not Evaluated
Edit: To address the issue raised by MarcoB, I did the following:
Added a new global variable gblCopperCoin to the dispatchtables.mx file
Created a very simple new package function
...
- 1,334
1
vote
0
answers
146
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Spelunking yields <<kernel function>> [closed]
This is in the spirit of the old but excellent thread: What is the most convenient way to read definitions of in-memory symbols when we don't have the source files? (Spelunking tools)
Using ...
- 343
8
votes
1
answer
144
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What Does Compile`SetIterate Do?
The list of compilable functions (given by Compile`CompilerFunctions[] // Sort) shows one of the more interesting- and core-sounding functions: ...
- 1,627
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1
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53
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In DynamicModule, InputField does not display the update when its variable updates through PopupWindow. How to fix this?
Here's a minimal example:
...
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0
answers
62
views
How to avoid repeated nested loading of packages? [closed]
Suppose my main program depends on functions provided by package A and B, while package B also loads package A "privately". Now package A can be accessed from the main program via the ...
- 569
2
votes
1
answer
111
views
shadowing problem with options of a package
So here is my problem. I am writing a software with mathematica, that uses an external package as a resource. They are some libraries for numerical integration, the CUBA libraries.
http://www.feynarts....
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1
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71
views
Why is loading a list of contexts with Map Get not working?
I wish to automate the loading of packages by using Map and Get but Mathematica doesn't seem to like it. How can I make this work?
This is how packages are normally loaded...
...
- 2,467
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0
answers
67
views
DeclarePackage causes shadowing problem in packages
The purpose of DeclarePackage is to load a package only when one of the package variables is needed. This works well when the variable is needed in a notebook but ...
- 81
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votes
1
answer
90
views
Context Manipulation within Scoping Constructs
In the following the full context form of Test is not required as "Aaa`" is added to ...
- 6,076
1
vote
1
answer
44
views
Strange behaviour of SubValues of a definition in a context
First we define a context:
Begin["Ctx`"];
ClearAll[f];
f[m_][n_] := n // (Range /* Append[m]);
End[];
We can check that
...
- 5,331
1
vote
0
answers
36
views
Importing equations generated in subpackage to be solved in another subpackage
I have a package which contains two subpackages: one ("`MOTSimulator`MOTGenerator") which generates a systems of differential equations of the form
...
- 11
1
vote
0
answers
57
views
Begin[] again (V12.1)
Some questions related to $Context and $ContextPath have already been asked and answered, but I still cannot fully grasp the ...
0
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0
answers
66
views
1
vote
0
answers
89
views
How to understand BeginPackage and Begin properly?
Using Get to evaluate these three .wl:
First:
...
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1
vote
1
answer
52
views
What is my current scope if I change `Inspector>Cell options>Evaluation options>CellContext` to "Notebook"?
I mean I made this change:
Now,
Clear["Global`*"]
and
Names["Global`*"]
are not working anymore. I tried ...
- 1,235
2
votes
1
answer
1k
views
packages will not load [closed]
I have a package at /Users/me/Desktop/Mathematica/MyPackages/SamplePackage.m. It looks like this:
...
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9
votes
1
answer
407
views
What is the correct to have package A use package B in its private section without making B visible to the user?
V 12.1 on windows.
I am loading pkg2, which in its Private section loads pkg1 in order to call one of its function.
After ...
- 149k
5
votes
2
answers
89
views
Move definition from one context to Global`
Suppose we have the following package ABC.wl.
BeginPackage["ABC`"]
Begin["DEF`"]
f1 = 0;
f2[x_] := x + 1
End[]
EndPackage[]
...
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