December 2018
Beginner to intermediate
564 pages
17h 34m
English
Content preview from Blockchain Developer's Guide
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Units and global variables
Global variables can be called by any Solidity smart contract. They are mainly used to return information about the Ethereum blockchain. Some of these variables can also perform various functions. Units of time and ether are also globally available. Ether currency numbers without a suffix are assumed to be wei. Time-related units can also be used and, just like currency, conversion among them is allowed.
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