PARI's commands

[CRGreathouse]

Originally Posted by science_man_88

I used eval so people could use powers not the full written number., and yes it's incomplete.

You can certainly write

f(x,y)=x+y;

f(2^10, 3^4)

and have it work properly without eval.

[CRGreathouse]

Originally Posted by science_man_88

the site isn't updating I added the guessing script, and the rate counter lol.

Good stuff. I changed the name in the header to PARI/GP, because that's how it needs to be (with caps) to show up properly in the categories and all that.

[science_man_88]

Originally Posted by CRGreathouse

You can certainly write

f(x,y)=x+y;

f(2^10, 3^4)

and have it work properly without eval.

Yeah well long multiplication uses each digit last I heard.

[science_man_88]

Originally Posted by CRGreathouse

Good stuff. I changed the name in the header to PARI/GP, because that's how it needs to be (with caps) to show up properly in the categories and all that.

I should make a note lol.

[CRGreathouse]

FWIW I'm working on the task Amb at the moment.

Originally Posted by science_man_88

Yeah well long multiplication uses each digit last I heard.

I don't know what that has to do with my point (that you don't need eval).

[science_man_88]

Originally Posted by CRGreathouse

FWIW I'm working on the task Amb at the moment.



I don't know what that has to do with my point (that you don't need eval).

thought it wasn't self evaluating.

[science_man_88]

Originally Posted by CRGreathouse

I don't understand the program; it seems to never use c, carry, or answer. Is this just incomplete?

I certainly wouldn't use eval() unless I absolutely had to.

The reason I never use the others is I can't get the d[x]==2 stuff to work. If I can't get this to work I can't work on digit by digit in string form.

[CRGreathouse]

Originally Posted by science_man_88

The reason I never use the others is I can't get the d[x]==2 stuff to work. If I can't get this to work I can't work on digit by digit in string form.

I don't understand what part you're stuck on, but eval() won't help you get there.

[science_man_88]

Originally Posted by CRGreathouse

I don't understand what part you're stuck on, but eval() won't help you get there.

What is stopping me is I made strings out of the digits and I want to check the digits but I haven't found a way that works to check them. If I could I'd complete->http://rosettacode.org/wiki/Determin...ing_is_numeric as well.

[CRGreathouse]

Originally Posted by science_man_88

What is stopping me is I made strings out of the digits and I want to check the digits but I haven't found a way that works to check them. If I could I'd complete->http://rosettacode.org/wiki/Determin...ing_is_numeric as well.

What does "check the digits" mean?

Making a string out of a number is easy: Str(n). Making this into a vector is similarly easy: Vec(Str(n)). If you want numbers rather than characters, you need eval(Vec(Str(n))). Possibly a better way is Vecsmall(Str(n)) which gives numbers that are 48 to 57 rather than 0 to 9. (You can subtract, of course, as desired.)

[science_man_88]

Originally Posted by CRGreathouse

What does "check the digits" mean?

Making a string out of a number is easy: Str(n). Making this into a vector is similarly easy: Vec(Str(n)). If you want numbers rather than characters, you need eval(Vec(Str(n))). Possibly a better way is Vecsmall(Str(n)) which gives numbers that are 48 to 57 rather than 0 to 9. (You can subtract, of course, as desired.)

okay thanks now we can use your brains to finish both long multiply and determine if numerical.

doh! What am I doing checking if it's 2? Now I can just add them now and use carry to take care of everything thanks again.