const bytes.opRead

5 uses

	bytes (current package)
		buffer.go#L35: 	opRead      readOp = -1 // Any other read operation.
		buffer.go#L309: 		b.lastRead = opRead
		buffer.go#L327: 		b.lastRead = opRead
		buffer.go#L342: 	b.lastRead = opRead
		buffer.go#L426: 	b.lastRead = opRead