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millfork/docs/lang/literals.md

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# Literals and initializers
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## Numeric literals
Decimal: `1`, `10`
Binary: `%0101`, `0b101001`
Quaternary: `0q2131`
Octal: `0o172`
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Hexadecimal: `$D323`, `0x2a2`
## String literals
String literals are surrounded with double quotes and followed by the name of the encoding:
"this is a string" ascii
Characters between the quotes are interpreted literally,
there are no ways to escape special characters or quotes.
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In some encodings, multiple characters are mapped to the same byte value,
for compatibility with multiple variants.
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Currently available encodings:
* `ascii` standard ASCII
* `pet` or `petscii` PETSCII (ASCII-like character set used by Commodore machines)
* `scr` Commodore screencodes
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* `apple2` Apple II charset ($A0$FE)
* `bbc` BBC Micro and ZX Spectrum character set
* `jis` JIS X 0201
* `iso_de`, `iso_no`, `iso_se`, `iso_yu` various variants of ISO/IEC-646
* `iso_dk`, `iso_fi` aliases for `iso_no` and `iso_se` respectively
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When programming for Commodore,
use `pet` for strings you're printing using standard I/O routines
and `scr` for strings you're copying to screen memory directly.
## Array initialisers
An array is initialized with either a string literal,
or a list of byte literals and strings, surrounded by brackets:
array a = [1, 2]
array b = "----" scr
array c = ["hello world!" ascii, 13]
Trailing commas (`[1, 2,]`) are not allowed.