PYRToken
Source:Verified
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Write Functions / transferFrom
Overview

The transferFrom function in the ERC20 contract allows a designated spender to transfer tokens from one account (the sender) to another (the recipient) on behalf of the sender. It checks for sufficient allowance and balances, and emits relevant events upon successful execution.

Inputs
  • sender (address): The address from which tokens are being transferred.
  • recipient (address): The address to which tokens are being sent.
  • amount (uint256): The number of tokens to transfer.
Outputs
  • Returns (bool): The function returns true if the transfer is successful.
Emits Two Events
Functions will often emit events during execution, often signifying key changes in state.

Approval: Emits the event after the allowance is updated to reflect the new allowance following a token transfer, ensuring that the spender's remaining allowance is accurately recorded.
Transfer: Emits the event to document the transfer of tokens from one account to another on behalf of the sender, ensuring that the transaction is recorded for both parties involved.
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