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As it is well known, it is possible to define a function that remembers its values once its evaluated, using the following code: 

f[x_]:=f[x]=rhs

During the day I evaluate f[x], for many x's, and I do not know/remember at which values of x I evaluated this. These values wont need to be evaluated again until I close mathematica, but if I close it, they will be lost. Is there a way to avoid this? To store these values somehow, so that I can use them the next time I open mathematica?

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  • $\begingroup$ save = DownValues[f] places the arguments and corresponding values of f in save. $\endgroup$
    – bbgodfrey
    Commented Jun 27, 2018 at 3:57
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    $\begingroup$ Look at documentation for DumpSave $\endgroup$
    – Bob Hanlon
    Commented Jun 27, 2018 at 4:56
  • $\begingroup$ @BobHanlon Much better than my answer. Thanks. $\endgroup$
    – bbgodfrey
    Commented Jun 27, 2018 at 5:01
  • $\begingroup$ I think DumpSave is storing only the definitions of the functions. The evaluations seem to be lost $\endgroup$
    – Fisher
    Commented Jun 27, 2018 at 14:01

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