When the calculation time in Mathematica notebooks becomes long, it makes sense to save the results somewhere so that they can be easily reloaded in a new session without the need for recalculation.

Since I do this quite often, I wrote a simple function `cachedCalc`

that automatically takes care of this.
Instead of writing e.g.

```
integral=Integrate[Sin[x]^17, {x, 1, 5}]
```

write

```
cachedCalc[integral, Integrate[Sin[x]^17, {x, 1, 5}]]
```

and `cachedCalc`

will take care of everything else. You can force recalculation and a max age of the cached values
both for each function and also by setting global variables. Details are described in the `usage`

message of the function
(available from within Mathematica with `?cachedCalc`

or check the source code below).

The implementation is pretty straightforward, essentially just making use of Mathematicaâ€™s `dumpSave`

and `dumpGet`

functions.
The only subtleties are related to variable assignments for variables whose name is given by a string, or getting the
variable name as a string if a variable itself (and not its name) is given as argument for `cachedCalc`

.