On Sun, Apr 20, 2008 at 7:42 PM, William Stein <[EMAIL PROTECTED]> wrote: > > > On Sun, Apr 20, 2008 at 10:38 AM, Ondrej Certik <[EMAIL PROTECTED]> wrote: > > > > > > On Sun, Apr 20, 2008 at 6:58 PM, William Stein <[EMAIL PROTECTED]> wrote: > > > > > > > > > On Sun, Apr 20, 2008 at 9:36 AM, Ondrej Certik <[EMAIL PROTECTED]> > wrote: > > > > > > > > On Fri, Apr 18, 2008 at 5:10 PM, William Stein <[EMAIL PROTECTED]> > wrote: > > > > > > > > > > > > > > > On Fri, Apr 18, 2008 at 4:59 AM, Ondrej Certik <[EMAIL > PROTECTED]> wrote: > > > > > > > > > > > > On Thu, Apr 17, 2008 at 9:24 PM, Hector Villafuerte <[EMAIL > PROTECTED]> wrote: > > > > > > > > > > > > > > On Thu, Apr 17, 2008 at 11:53 AM, William Stein <[EMAIL > PROTECTED]> wrote: > > > > > > > [...] > > > > > > > > > > > > > > > In Sage the function is show_identifiers(). > > > > > > > [...] > > > > > > > > > > > > > > Oh, I misunderstood the question then... my bad. Thanks > William, > > > > > > > > > > > > Why not to name it the same as in Matlab? > > > > > > > > > > > > Ondrej > > > > > > > > > > Because I named it the same as in Magma! > > > > > > > > Haha, I didn't know that. :) > > > > > > > > > > > > > Also, in retrospect, I think Magma's "ShowIdentifiers()" is a > far far > > > > > less obfuscated name than Matlab's cryptics "whos", which frankly > > > > > looks like a spelling mistake or typo to me. > > > > > > > > Agree. The only disadvantage is that it takes longer to type, > because > > > > "sho<TAB>" yields > > > > > > > > sage: sho > > > > show show_default show_identifiers > > > > > > > > so I need to type "show_i<TAB>", then <BACKSPACE> and "()<ENTER>". > > > > Actually it also works without the backspace. > > > > > > > > > > Magma tends to have long verbose names like this. > > > For example, to compute the charpoly of a matrix > > > in Magma: > > > > > > > A := MatrixAlgebra(RationalField(), 2)![1,2,3,4]; > > > > R<x> := PolynomialRing(RationalField()); > > > > CharacteristicPolynomial(A); > > > x^2 - 5*x - 2 > > > > > > Lots of long names. But Magma code is very readable > > > (like Python), in my opinion. > > > > > > In Sage the above is: > > > > > > sage: a = matrix(QQ, 2, [1,2,3,4]) > > > sage: a.charpoly() > > > x^2 - 5*x - 2 > > > > For anything, that is going to endup in scripts, I prefer (I would > > even say require) longer names, because the code is going to be read > > more times than written. > > > > However for things that are only going to be used in the interactive > > mode, I prefer short names. There are not so many things that belong > > to this > > cathegory, but I think show_identifiers() is one of them. Or will you > > ever use show_identifiers() in a script/code? > > Yes. Actually show_identifiers was broken-ish / nonoptimal in sage-2.11, > and I recently fixed it for sage-3.0 specifically because it was being > used in some library code. It's used to implement saving all current > variables defined in a session. > > It could also be very useful for GUI code, I guess...
OK, in this case the longer name is appropriate. And I can always put some appropriate shortcut to my ipythonrc. Ondrej --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
