Bug in Mathcad 15 and also in Prime 3

[Werner_E]

After looking at the worksheet posted here

http://communities.ptc.com/message/268193#268193

I think this is a bug. Its present in Mathcad and in Prime alike.

It seems to work with any function - built-in or user defined.

Mathcad should not allow the first definition.

[ValeryOchkov · Accepted solution]

sin(a):=100 is a user function with formal argument a and with name sin.

I think e:=4 is a bug too in this case.

[Werner_E]

Valery Ochkov wrote:

sin(a):=100 is a user function with formal argument a and with name sin.

OmG, of course you are right and its not a bug. Not sure where I had my mind - its late and it was a long day 😞

I think e:=4 is a bug too in this case.

???

[ValeryOchkov]

Werner Exinger wrote:

I think e:=4 is a bug too in this case.

???

sin is one built-in function, e is one built-in constant

[Werner_E]

Valery Ochkov wrote:

Werner Exinger wrote:

I think e:=4 is a bug too in this case.

???

sin is one built-in function, e is one built-in constant

OK, I see what you meant.

[ValeryOchkov]

alpha is a built-in constant

[Werner_E]

Valery Ochkov wrote:

alpha is a built-in constant

Yes, but only in Prime. Not in Mathcad.

[ValeryOchkov]

Werner Exinger wrote:

Valery Ochkov wrote:

alpha is a built-in constant

Yes, but only in Prime. Not in Mathcad.

Prime is Mathcad too

[ValeryOchkov]

Werner Exinger wrote:

it was a long day 😞

It was a short day for me - not 24 but 22 hrs - one fly from Paris to Moscow.

[athurin]

Silly question ... Am I the only one to think that it would be a nice feature if Mathcad could display warnings when redefining stuff ? (especially build-in functions/constants/units, but not only). Ideally, with a "shut up I know what I am doing" button.

[Werner_E]

Adrien Thurin wrote:

Silly question ... Am I the only one to think that it would be a nice feature if Mathcad could display warnings when redefining stuff ? (especially build-in functions/constants/units, but not only). Ideally, with a "shut up I know what I am doing" button.

Such a feature already exists in Mathcad for a long time. Redefinitions are flagged by green wavy underlines. I usually have it turned off, though. Its one of the many features which are not (yet?) implemented in Prime.

[athurin]

I ever used the old Mathcad. Good to know it was there. Hopefully it might come to Prime. Maybe when we get to Prime 6 ?

[MikeArmstrong]

Adrien Thurin wrote:

I ever used the old Mathcad. Good to know it was there. Hopefully it might come to Prime. Maybe when we get to Prime 6 ?

Prime 6 - I certainly hope so

[ValeryOchkov]

Werner Exinger wrote:

Adrien Thurin wrote:

Silly question ... Am I the only one to think that it would be a nice feature if Mathcad could display warnings when redefining stuff ? (especially build-in functions/constants/units, but not only). Ideally, with a "shut up I know what I am doing" button.

Such a feature already exists in Mathcad for a long time. Redefinitions are flagged by green wavy underlines.

Mathcad PM

(see please http://communities.ptc.com/groups/mathcad-pm-prime-minister)

has not 2 but 3 levels of variables redefinitions checking:

1. No any cheking (Mathcad Prime)
2. Grean wavy (Mathcad 15)
3. We can not do any variables redefinitions (Mathcad PM)