Index – O

O O_EXCL O_NONBLOCK OBJ 1-based and negative indices index offsets across objects writing a scene object blessed reference hash-based object recycling object-oriented programming when to use Object::Pad object_2svref (B::SV) observer pattern oct ODBM_File pperl 0.6.21 offscreen canvas offscreen drawing OFS ok (pragma) once (EV) one-liner, [1], [2], [3], [4] as shell alias awk equivalents context lines converting to a script counting lines filtering lines in a shell pipeline passing arguments quoting reductions sed equivalents switches one_event (Event) op tree op_numify (Math::GMP) opaque pointer, [1] as blessed integer Opcode pperl 0.6.5 Opcode::deny Opcode::deny_only Opcode::permit Opcode::permit_only

open, [1] 2-arg form 3-arg form, [1], [2], [3], [4], [5] modes scalar reference security to process open2 argument order open3 argument order open (POSIX) (pragma) open pragma open_db (Peta::FFI::LMDB::Txn) opendir, [1] operator additive assignment binding bitwise and bitwise or bitwise string bitwise xor comma conditional equality, [1] filetest list list rightward logical and, [1] logical defined-or logical dor logical exclusive or logical not logical or, [1] logical xor match multiplicative named unary precedence range regexp relational, [1] shift ternary unary operator precedence or vs ||, [1] print word forms oplist (B::OP) opnumber (B) ops (pragma) optimization (re) or vs || or die idiom, [1], [2], [3], [4], [5], [6] orbit camera ord ORS our our sub output redirection awk output_field_separator output_record_separator overload operator metamethods overload (pragma) overloading (pragma) override