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The blob access functions are similar to the atom accessing functions. Blobs being atoms, the atom functions operate on blobs and vice versa. For clarity and possible future compatibility issues, however, it is not advised to rely on this.
FALSE) or the blob is a reference to an existing blob (
TRUE). Reporting new/existing can be used to deal with external objects having their own reference counts. If the return is
TRUEthis reference count must be incremented, and it must be decremented on blob destruction callback. See also PL_put_atom_nchars().
TRUE. Otherwise return
FALSE. Each result pointer may be
NULL, in which case the requested information is ignored.