I am new to Mathematica so I do apologize if my question is too elementary.
In the start of my notebook, I want to make sure that any previous definitions are wiped out so I use the Quit[]
or Exit[]
command before any other commands.
For example, consider the following
Quit[]
g = 1/2 Sqrt[1 - v + 4 v^2]
g[[2,1]]
then I change last part of the code and I want to re-evaluate the whole cells (I know that I can just re-evaluate the last cell by pressing Shift+Enter
but I don't want to do this as in long codes there are many such cells and I don't want to re-evaluate them one by one)
Quit[]
g = 1/2 Sqrt[1 - v + 4 v^2]
g[[2]]
So I press ctrl+A
to select the whole cells and then press Shift+Enter
to evaluate the cells or I use Evaluate Notebook
in the Evaluation
menu bar. But the problem is that the result does not change! I think that there may be a problem in my evaluation method.
Question
1- Can you kindly help me out to solve this issue? :)
2- What is the evaluation sequence in a NoteBook? For example, does it begin with the first cell? and then continues to evaluate the following cells in order.
Quit[]
clears the evaluation queue so the first command in the Notebook stops everything. It is not usually necessary to continually quit the kernel and re-evaluate entire notebooks but if you must, use, e.g., separate menu selections to (1) quit the kernel and (2) re-evaluate the notebook without theQuit[]
. $\endgroup$Evaluation
menu bar? and not using the commandQuit[]
? :) $\endgroup$Quit
in a notebook. Kill the kernel as needed via the menu, thenc-a shift-enter
. As you learn good code practices you wont need to kill the kernel so often. $\endgroup$