August 2019
Intermediate to advanced
486 pages
13h 52m
English
Content preview from Mastering Blockchain Programming with Solidity
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Chapter 7
- Ether is not ERC20 compliant, and so it does not support functions such as ERC20 which are applied on ERC20 standard token.
- Let's say that there is a contract that provides a periodic service to subscribed accounts. To subscribe for this service, the contract accepts a certain amount of a specific ERC20 token as a subscription fee. To do this, the contract must have a public or external function that calls the token.transferFrom() function and charges the caller in an ERC20 token. This way, a user can pay for the service using the ERC20 token. Note that you should not transfer the ERC20 token directly to the service contract, as you might lose your tokens.
- Yes, there are some other token standards that have been proposed, such ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.