Clearing symbol values, removing symbols from memory and general garbage collection.
5
votes
1answer
55 views
ClearAll[“Global`*”] stops working with Context set to 'unique to this Notebook'
I just changed my default notebook context to 'unique to this Notebook' so that variables don't roll across numerous open notebooks. Doing this, however, made the command ClearAll["Global*"] stop ...
6
votes
1answer
80 views
ClearAll just for current notebook
So in my search to fine tune Mathematica to what works for me, I found a nice setting that helps separate variable declaration between notebooks. Under Global Preferences, searching for CellContext ...
0
votes
0answers
131 views
Mathematica 9.0.1 is clearing variables
I have noticed an errant behavior new in Mathematica 9. I thought at first it was because I was importing a very large text file and Mathematica just couldn't handle it. But now, I have seen the ...
12
votes
3answers
320 views
How to clear parts of a memoized function?
I have a function of two variables, e.g.:
f[a_, b_] := f[a, b] = something f[a - 1, b - 1] etc
With the above code I used the concept of memoization to speed up ...
6
votes
2answers
195 views
How to clear just variables defined in one notebook?
I'm trying to set up some notebooks so that I have one "seed" notebook that defines all my values globally when I run it. I have three other notebooks that take these values and run with them to do ...
1
vote
0answers
101 views
What does Clear[Evaluate[Context[] <> “*”]] mean? [closed]
In a few Mma notebooks I've seen this line:
Clear[Evaluate[Context[] <> "*"]];
I suspect that it kind of "clears" whatever there might be before using this ...
12
votes
1answer
148 views
Is it possible to Clear all variables (but not functions)?
I have written a Mathematica script in which I define functions and variables. Here is a vastly simplified example:
...
12
votes
6answers
363 views
How to clear all variables except one?
I have a lot of variables: $a,b,c,d, \ldots $
I want to clear the values of all of them except $b$. It's really lengthy to write
Clear[a];
Clear[c];
...
Is ...
7
votes
3answers
402 views
Elegant manipulation of the variables list
I have a list of global variables (some of them are indexed variables), for example:
varsH = Hold[U0[1], U0[2], B0, V0[1], V0[2]]
Or (if it is easier to handle) ...
0
votes
2answers
702 views
How do I clear all variables with subscripts? [duplicate]
Possible Duplicate:
Clear complains that a variable is not a symbol or a string?
Clear["Global*"]` Works for most variables, however if i do something ...
10
votes
2answers
392 views
How to unload automatically loaded packages?
I know that this has been discussed here (How do I clear all user defined symbols?), but my case is somewhat different. How does one unload packages during runtime that were loaded with the start of ...
28
votes
2answers
708 views
Is there a way to separate variables between multiple notebooks?
I often correct homework by checking the calculations in Mathematica. Sometimes you would like to have two solutions open at once. However often defined symbols such as ...
17
votes
5answers
3k views
How do I clear all user defined symbols?
Is there some way to do this other than going to Evaluation -> Quit kernel and firing a new one up?
12
votes
4answers
983 views
Clear complains that a variable is not a symbol or a string?
Here's a small listing where I've used EscqEsc to typeset θ in the notebook:
...
