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Introduction
Published in Randall L. Eubank, Ana Kupresanin, Statistical Computing in C++ and R, 2011
Randall L. Eubank, Ana Kupresanin
The iterator (sometimes called a cursor) concept has developed as a standardized approach to navigation of ADTs. An iterator is an abstract, generic analog of a pointer. The generic part of this description manifests as a “guaranteed” set of operations provided by any iterator class: namely, ++, a postfix increment operator that advances the iterator to the next object in the ADT,*, a dereferencing operator that returns the current object being “pointed” to by the iterator and!=, a logical operator that allows for the comparison of two iterator objects.
Modelling and platform application of the behaviour of a cyber physical production system
Published in International Journal of Computer Integrated Manufacturing, 2021
Simeng Song, Zengqiang Jiang, Jing Ma, Qi Li, Qiang Wang
The model engine scans the three collections through the iterator to determine whether the transition has reached the fire condition. The iterator scans the place and transitions sequentially to identify the transition that meets the fire conditions, executes the methods and services in the transition, and continues scanning after updating the system status. The iterator maintains the information in the event list, log file, and simulation clock, executes the transition script language, and invokes the services. During this invocation, the iterator queries the service information from the UDDI through the service semantics. After receiving the feedback, the Web Service in the service layer is called to realise the data transmission.
Addressing some of bill of lading issues using the Internet of Things and blockchain technologies: a digitalized conceptual framework
Published in Maritime Policy & Management, 2023
Elnaz Irannezhad, Hamed Faroqi
Provenance analysis involves retrieving and querying the state of the container in a specific time period. While the integration of IoT and smart contract enables dynamic changes in the ownership of container across the supply chain, retrieving the ownership data from stored ledgers on the blockchain network is not a user-friendly task. Most blockchain platforms provide APIs to access the content of blocks and return an iterator over the state of specific container x such as its location and holder H(x,t). For example, GetHistoryForKey API designed for Baric Hyperledger or BlockCypher’s Ethereum Transaction API.