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According to this blog entry :

IOTA does not “natively” support smart contracts. The IOTA Foundation has publicly stated, that smart contracts will not be a feature of the IOTA core but provided as a layer on top. And it’s also public knowledge, that IOTA Foundation is actively working on this additional smart contracts layer which will likely need until the end of 2018 to become GA.

So, now it's the time to say that "Qubic" is programming language to develop the IOTA Smart Contract? And what is its difference with "Abra"? And is there any handbook for how to use it?

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Qubic is the name of a protocol which will be built on top of the IOTA Tangle. The Qubic protocol provides general-purpose, cloud- or fog-based, permissionless, multiprocessing capabilities on the Tangle. It does this by allowing the transfer of prepackaged computational tasks from a device to some assembly of oracle machines, and have them perform said tasks at a price (i.e. outsourced computations). Such a package of computational tasks is also called a qubic.

The Qubic protocol will enable smart contract functionality on the Tangle, but smart contract is just one of the possible applications of Qubic.

Abra is a programming language which will be used to define (write) individual qubics in the Qubic protocol. Qubic is not a programming language. Qubic != Abra.

Currently there is limited information about Abra or Qubic and how to use them. But there is an interesting project that you should keep an eye on: Qubic Lite (QLite). It is trying to simulate the Qubic environment, as described on the Qubic website. The source code and documentation for QLite will be published on qubiclite Github in the next few days.

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http://qubic.iota.org/ should answer these questions.

It states, that Abra will be part of Qubics implementation being its functional programming language

and there is no handbook available as of 8 July 2018.

  • Please include some relevant information into your answer. Stack Exchange answers should be able to stand on their own even if links rot over time. – Helmar Jul 21 '18 at 7:50

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