Inserts len bytes of val into this at pos.
If len is positive, val may contain embedded nuls and need not be nul-terminated. It is the caller's
responsibility to ensure that val has at least len addressable bytes.
If len is negative, val must be nul-terminated and len is considered to request the entire string
length.
If pos is -1, bytes are inserted at the end of the string.
| 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 |