Value | Color |
---|---|
\e[0;30m | Black |
\e[0;31m | Red |
\e[0;32m | Green |
\e[0;33m | Yellow |
\e[0;34m | Blue |
\e[0;35m | Purple |
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Operator | Purpose | For DataType | |
---|---|---|---|
= | Equal to operation | string | |
== | Equal to operation | string | |
!= | is not equal to | string | |
< | is less than in ASCII alphabetical order | string | |
> | is greater than in ASCII alphabetical order | string | |
-z | if a string is empty (or null) | string | |
-n | if a string is not empty (or not null) | string | |
-eq | is equal to | number | |
-ne | is not equal to | number |
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pragma solidity 0.6.4; | |
import "./Context.sol"; | |
import "./IERC20.sol"; | |
import "./SafeMath.sol"; | |
import "./Ownable.sol"; | |
/** | |
* @dev Implementation of the {IERC20} interface. | |
* |