some confusion about things in the expression calc

[ZayLong]

some of the expressions in the calculator thing in MMF, i dont understand

like Str$, Left$, Mid$, Right$, Len, Hex$, Bin$, etc.

what do they mean? O_o and what are their use? if someone can either tell me here, or direct me to some sort of online "guide" then i would appreciate it alot. im sure some of these expressions would be very useful to me if i knew what they were for.

[Jahkri]

Hi Zaylong,

Realy useful are:

Str$ and Val

with them you can convert values into strings and vice-versa. For example: The Edit-Box accepts "Numbers" and Strings. But every number in the Edit-Box is in the "String"-Format and is not threated as a value. The Counter-Object for example needs Values and can not accepts the "String"-Format. But you can convert a String (for example from the editbox) to a value (for example for the Counter-Object) and vice versa.

To convert from String to Value: Val(>String here<)
To convert from Value to String: Str$(>Value here<)

The Hex$(>Value<) can convert a value into Hex-Value and the
Bin$(>Value<) can convert a value into a binary-value.

The Other Expressions like Left$, Mid$, Right$ and Len, i have not used so far. Perhaps somebody Else can Explain them.

Greets

jahkri

[ZayLong]

well that was very enlightening information, thank you very much

[Dynasoft]

Len() gets the number of characters (letters, numbers, spaces, punctuation, everything) in a string
Left$() Mid$() Right$() let you chop a string up into pieces.

As an example of a few of them being used together, this expression adds leading zeros to a (positive) number:
left$("00000000", 8 - len(str$(score))) + str$(score)

It converts the score number (e.g. 12735) to a string ("12735") using str$(), counts how many characters are in it (5) using len(), subtracts that from 8 (3), chops that many characters from the left of "00000000" ("000") using left$() and joins that to the string version of the score ("000"+"12735" = "00012735").

[MuddyMole]

Or you could just say:

right$( "0000000" + str$(score), 8 )

[Dynasoft]

that version breaks if the score gets over 8 characters, but yes, you could O.o