newRPL - build 1255 released! [updated to 1299]

[Gilles]

(05-15-2019 09:00 PM)Claudio L. Wrote:  

(05-15-2019 11:47 AM)Gilles Wrote:  If not, NewRpl lacks an R->I (or a more generic A->E Approx to exact) command

Why would you care to force an inexact number to be exact? Besides obsessing about whether a number is exact or not, I can't see any practical use for that.
If you can think of a specific use and can convince me to add the command, I'm open to it. I just never found any real case that would need it.

1/ To preserve backwards compatibility with the RPL language. In RPL : 123. R->I returns 123

2/ With some problem you have to find an exact solution. But to find it, you first have to deal with an approx solution (or an interval) and look around to find and verify the exact solution.

3/ To play with digits. I knows the DIGITS command. But in some case, it is interesting to do things like (probably not the best way) :

{ 1. 2. 3. 4. } << R->I ->STR >> MAP ΣLIST STR->
returns 1234

(NL->I behavior with the ListExt Library)

4/ Perhaps I missed a command, but if you need an 'exact' random integer/ or a random matrix with exact integers. Or generate a random number in Q (ie .'158/99')

EDIT :

in fact the ->Q command does the job ;D

123. ->Q returns 123