Inserts len bytes of val into this at pos.
Because len is provided, val may contain embedded nuls and need not be nul-terminated. If pos is
-1, bytes are inserted at the end of the string.
Since this function does not stop at nul bytes, it is the caller's responsibility to ensure that val has at least len
addressable bytes.
| this | |
| pos |
position in this where insertion should happen, or -1 for at the end |
| val |
bytes to insert |
| len |
number of bytes of |
|
this |