On Thu, Aug 21, 2008 at 4:41 PM, David Philp <[EMAIL PROTECTED]> wrote:
>
>
> On 22/08/2008, at 5:18 AM, William Stein wrote:
>
>> Please ask questions, make comments, and keep this thread going!
>
> I don't know how much of the below is possible or available in Sage.
> But I miss they syntax from Mathematica. I love the fact that it
> doesn't wear down the little fingers on your right hand.
>
> [EMAIL PROTECTED] (elegant, clear, no matching of brackets)
What does that do?
>
> f /@ data (good extension of good syntax)
What does that do?
>
> {#, f[#]}& /@ data (so dirty, so quick, a bit hard on pinky)
What does that do?
>
> data /. x_?(# < 0 &) -> 0 (this is perhaps not the killer example)
What does that do?
>
> y == a x^2 + b x + c (so easy to type, so easy to parse by eye)
Here is how to do it in Sage:
sage: implicit_multiplication(True)
sage: var('x,y,a,b,c')
(x, y, a, b, c)
sage: y == a x^2 + b x + c
y == a*x^2 + b*x + c
> Probably the thing that makes all that learnable and useable in
> Mathematica is how a multiple click shows you the structure of your
> expression.
What do you mean? Multiple click on what? What sort of structure?
> The virtuous solution might be to write a "Sage for Mathematica
> junkies" document.
Definitely that should happen. Want to do it? Make it 1 page long
for starters and put in the wiki.
But still, Sage should also be made easier to use.
I really want to know the answers to all the questions above.
William
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