2019-03-15 15:23:47 +01:00
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# Working With Strings
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Strings in RETRO are NULL terminated sequences of values
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representing characters. Being NULL terminated, they can't
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contain a NULL (ASCII 0).
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The character words in RETRO are built around ASCII, but
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strings can contain UTF8 encoded data if the host platform
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allows. Words like `s:length` will return the number of bytes,
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not the number of logical characters in this case.
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## Searching
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RETRO provides two words for searching within a string.
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`s:contains-char?`
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`s:contains-string?`
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`s:index-of`
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`s:index-of-string`
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## Comparisons
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`s:eq?`
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`s:case`
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## Extraction
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`s:left`
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`s:right`
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`s:substr`
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## Joining
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`s:append`
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`s:prepend`
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## Tokenization
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`s:tokenize`
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`s:tokenize-on-string`
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`s:split`
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`s:split-on-string`
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## Conversions
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`s:to-lower`
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`s:to-upper`
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`s:to-number`
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## Cleanup
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`s:chop`
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`s:trim`
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`s:trim-left`
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`s:trim-right`
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## Lifetime
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`s:keep`
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`s:temp`
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## Combinators
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`s:for-each`
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`s:filter`
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`s:map`
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## Other
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`s:evaluate`
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`s:copy`
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`s:reverse`
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`s:hash`
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`s:length`
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`s:replace`
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`s:format`
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`s:empty`
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