What's "$"?

[pinacoladaxb]

What does "$" mean in programming? I'm starting to see it in the world very often. I think it signifies some sort of reference, but I'm not sure. I can't search for it because it is a code. Can comeone help?

[DavidN]

Well... in MMF's case it's used to signify a string as opposed to a value. Early programming languages also did this (meaning that I still habitually call the dollar sign "string" now).

But in object-oriented languages that denote types differently, the $ symbol has been made unnecessary. In PHP, its use has changed to mark variable names instead.

[pinacoladaxb]

Ok, thanks. That's all I needed to know.

[Angel]

in php is the first char of variable $var = 10;
In other language and MMF Expression editor $ stay for "String".
Str$ return a number in string format.
Bin$ return a number in binary string format (0b10101010)

[jellytot]

Does anyone know if there an index or help file somewhere for all these special symbols and variables you can use in the Expression editor?

JT

[LIJI]

Note that not all string expressions ends with a $.
The $ is optional but widely used for string expressions in MMF.
When making an extension all of these names for an expression will be legal for both number and string expressions:
String$(
Var$(
String(
Val(
My$Expression$(
MyExpression(
My$Expression(

[Tiles]

Most of this symbols appears automatically by retreiving the expression from another object. So in most cases there is no need to manually insert them.