StringToDouble or StrToDouble

[macpee]

Please can someone explain to me in simple terms the difference between StringToDouble() and StrToDouble() functions? The documents did not seem to differentiate between the two to my understanding.

[Alain Verleyen]

It's the same.

Prefer to use StringToDouble() for mql4/mql5 compatibility.

[macpee]

Alain Verleyen:
It's the same.

Prefer to use StringToDouble() for mql4/mql5 compatibility.

They cannot possibly be the same in one programming language without stating so in the documentation. Besides they have different explanations, only no example for one.

[Carl Schreiber]

StrToDouble() was/is ONLY for mql4, StringToDouble() is for Mql4 and Mql5.

[macpee]

Carl Schreiber:
StrToDouble() was/is for mql4, StringToDouble() is for Mql4 and Mql5.

Ok now

[Alain Verleyen]

Carl Schreiber:
StrToDouble() was/is ONLY for mql4, StringToDouble() is for Mql4 and Mql5.

Which is exactly what I wrote. You must have something special to get an "Ok now".