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+--- Thread: INPUT & EVAL() (/thread-11114.html)
INPUT & EVAL() - Tyann - 07-24-2018 10:37 AM
Bonjour
j'ai fait quelques essais avec INPUT et EVAL() mais je n'obtiens que des messages
d'erreur.
Quelqu'un aurait-il fait des essais concluants ?
Hello
I did some tests with INPUT and EVAL() but I only get messages
error.
Has anyone done any conclusive tests?
RE: INPUT & EVAL() - DrD - 07-24-2018 10:56 AM
I have tried this:
Code:
EXPORT test()
BEGIN
LOCAL d2ydx2, x, y, t;
INPUT({ {x, [8], {35,60,0}},
{y, [8], {35,60,1}},
{t, [8], {35,60,2}} },
"Parametric Equation 2nd Derivative",
{"x = ", "y = ", "Parameter = "},
{"Enter the x-function ", "Enter the y-function", "Enter the parameter variable"},
{QUOTE(t^2-4),QUOTE(t^3-3*t),QUOTE(t)},
{QUOTE(t^2-4),QUOTE(t^3-3*t),QUOTE(t)} );
d2ydx2:=normal(diff((diff(y,t))/(diff(x,t)),t)/(diff(x,t))); // Second derivative
RETURN d2ydx2;
END;The default {reset,initial} parameters work, however, manually inputting new, (or changing existing) values, doesn't work. There are probably better ways to do this, but this is where I am at the moment...
-Dale-
RE: INPUT & EVAL() - Carlos295pz - 07-24-2018 04:24 PM
Code:
EXPORT INPEVAL
BEGIN
LOCAL Vars={{'X',[0],{30,20,1}},
{'Y',[0],{30,20,2}},
{'Z',{10,20,30},{30,20,3}}};
INPUT(EVAL(Vars));
INPUT(EVAL(Vars({1,2})));
INPUT(EVAL(Vars({2,3})));
Vars(0):={'W',[0],{30,20,1}};
INPUT(EVAL(Vars({2,4})));
INPUT(EVAL(CONCAT({Vars(0)},Vars({2,3}))));
LOCAL VHelp:={"▇▶Help for X◀▇",
"▇▶Help for Y◀▇",
"▇▶Help for Z◀▇"};
LOCAL VSelect:={2,3};
INPUT(EVAL(Vars(VSelect)),{},{},VHelp(VSelect));
END;RE: INPUT & EVAL() - Tyann - 07-24-2018 04:36 PM
DrD
Désolé j'ai été un peu laconique, message posté juste avant de partir au travail,
mais je voulais parler des nouvelles possibilités offertes par la mise à jour.
Sorry I was a bit laconic, message posted just before going to work,
but I wanted to talk about the new possibilities offered by the update.
Carlos295pz
Super, c'est exactement ce que j'essayais de faire, merci beaucoup.
Excellente cette nouvelle possibilité.
Great, that's exactly what I was trying to do, thank you very much.
Excellent this new possibility.