Copies bytes from one byte collection to another, or copies bytes within a byte collection. Count bytes are copied starting from src-index in src-coll to dest-index in dest coll. The destination byte range may overlap with the source byte range.
sealed
| dest-coll | An instance of <buffer>, <byte-vector>, <unicode-string>, or <byte-string>. |
| dest-index | An instance of <integer>. |
| src-coll | An instance of <buffer>, <byte-vector>, <unicode-string>, or <byte-string>. |
| src-index | An instance of <integer>. |
| count | An instance of <integer>. |
<buffer-index>, which is identical to <integer>.