December 2018
Beginner to intermediate
564 pages
17h 34m
English
Content preview from Blockchain Developer's Guide
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Updating the ABI
The ABI of a contract provides various kinds of information about the contract other than implementation. The ABI generated by two different versions of compilers may not match as higher versions support more solidity features than lower versions; therefore, they will include extra things in the ABI. For example, the fallback function was introduced in the 0.4.0 version of Solidity so the ABI generated using compilers whose version is less than 0.4.0 will have no information about fallback functions, and these smart contracts behave like they have a fallback function with an empty body and a payable modifier. So, the API should be updated so that applications that depend on the ABI of newer solidity versions can have better ...
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