SPIN code Syntax Symbols repeated ie. [][] and %% ?

Phillip Y.

 Rotary Encoder v1.0

PUB ReadDelta(EncID): DeltaPos
''Read delta position (relative position value since last time read) of EncID.
  DeltaPos := 0 + -(EncID < TotDelta) * -long[noparse][[/noparse]Pos][noparse][[/noparse]TotEnc+EncID] + (long[noparse][[/noparse]Pos][noparse][[/noparse]TotEnc+EncID] := long[noparse][[/noparse]Pos][noparse][[/noparse]EncID])

I dont understand the use of ·" [noparse][[/noparse] ] [noparse][[/noparse] ] " what is this a 2D array ?

I have also seen···%%0123 where each digit is 2 bits compared to %01 binary,· {VGA TEXT, palette·byte·%%333,%%001·'white / dark blue }
and·I supose that %%%01234567 woud be "octal"
and·I supose that·%%%%···········would be "hexadecimal", just like $ is.

What is the english word for the 2bit digit system ?

How many other things can be repeated like this and give unanticipated functionality ?

Phillip Y.

cgracey

[noparse]/noparse[noparse]/noparse can only be used·in BYTE[noparse][[/noparse]base][noparse][[/noparse]index], WORD[noparse][[/noparse]base][noparse][[/noparse]index], or LONG[noparse][[/noparse]base][noparse][[/noparse]index]. Base is the base address while index is the offset. Index is scaled x1 for BYTE, x2 for WORD, or x4 for LONG.
%1010101 is binary.
%%0123 is double-binary.
$FFFF is hex.
There are no other uses of % or $.

Phillip Y. said...

 Rotary Encoder v1.0

PUB ReadDelta(EncID): DeltaPos
''Read delta position (relative position value since last time read) of EncID.
  DeltaPos := 0 + -(EncID < TotDelta) * -long[noparse][[/noparse]Pos][noparse][[/noparse]TotEnc+EncID] + (long[noparse][[/noparse]Pos][noparse][[/noparse]TotEnc+EncID] := long[noparse][[/noparse]Pos][noparse][[/noparse]EncID])

I dont understand the use of ·" [noparse][[/noparse] ] [noparse][[/noparse] ] " what is this a 2D array ?

I have also seen···%%0123 where each digit is 2 bits compared to %01 binary,· {VGA TEXT, palette·byte·%%333,%%001·'white / dark blue }
and·I supose that %%%01234567 woud be "octal"
and·I supose that·%%%%···········would be "hexadecimal", just like $ is.

What is the english word for the 2bit digit system ?

How many other things can be repeated like this and give unanticipated functionality ?

Phillip Y.

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Chip Gracey
Parallax, Inc.

Phillip Y.

Thank you·Chip.

I searched for ][noparse][[/noparse] and found 17 in chapter 4: Spin Language Reference, 0 for %% .

Phillip Y.