Maybe it is a *convention* that "_" is the previous result.
"_" is a legitimate variable name in Python, so it is sometimes used for results
you don't really intend to keep.
The following produces 8 in the Sage Cell:
_ = 1 + 2
_ + 5
Rob
On 04/11/2017 03:44 PM, Andrey Novoseltsev wrote:
On Tuesday, 11 April 2017 14:13:28 UTC-6, Ingo Dahn wrote:
From the net I got that the result of the previous computation can be
referred to as _. But if I try to use it in SageCell like in
1+2
_+5
I get an error. What is the correct way to refer to previous results?
I never used or saw _ used in SageMathCell. There is a question of what
"previous computation" is. Since I am used to SageNB, for me previous
computation is the result of the previous cell, which does not make much sense
when there is only one cell ;-)
I don't think that SageMathCell has any special treatment for _ on its own, so
if it does or does not work, it is due to Sage/IPython/Jupyter/etc handing
actual code and output. So - if things worked before and got broken I'll try to
fix them, but if they never worked I claim that it is by design and should not
be impemented.
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