Smart Contract Development
  • Introduction
    • What is a Transaction
    • Accounts and Signing
    • What is a smart contract
  • Learning Solidity
    • Introduction
    • Module 1
      • Variable Types
      • Variable Scope: State & Local variables
      • Global variables
      • Functions
        • View and Pure
        • Shadowing in Fuctions
      • Mapping
      • Require
      • Events
    • Project #1: Simple Registry
    • Module 2
      • Constructor
      • Data Location: Value & Reference
      • Interface
      • Import
        • Importing in Foundry
      • Inheritance
      • ERC-20
      • Checks-effect-interaction pattern
    • Project #2: Basic Vault
    • Module 3
      • Payable
      • Receive
      • Fallback
      • Returns
    • Project #3: ERC20+ETH Wrapper
    • Module 4
      • Immutable and Constant
      • Fixed-point Math
      • Abstract contracts
      • ERC-4626
      • Modifier + Inheritance +Ownable
      • Type
    • Project #4: Fractional Wrapper
    • Module 5
      • If-else
      • Libraries
        • TransferHelper
      • Chainlink Oracle
    • Project #5: Collateralized Vault
  • Compendium
    • Solidity Basics
      • Variable Types
      • Value Types
        • address
        • enum
      • Reference Types
        • strings
        • mappings
        • struct
        • Arrays
        • Multi-Dimensional arrays
      • Global Objects
      • Functions
        • Function types
        • Constructor Function
        • Transaction vs Call
        • Require, Revert, Assert
      • Function signature + selectors
      • Payable
        • Payable + withdraw
        • msg.value & payable functions
      • Receive
      • Fallback function (sol v 0.8)
        • Fallback function (sol v 0.6)
      • call, staticcall, delegatecall
    • Return & Events
    • Control Variable Visibility
    • Local Variables (Storage v Memory)
    • Data Location and Assignment Behaviors
    • Modifiers & Inheritance & Import
      • import styles
    • Interface & Abstract Contracts
    • ABI & Debugging
    • Libraries
    • Conditional(ternary) operators
    • Smart Contract Life-cycle
      • Pausing Smart Contracts
      • Destroying Smart Contracts
    • Merkle Trie and MPT
    • Merkle Tree Airdrop
  • Try & catch
  • Ethereum Signatures
  • EVM, Storage, Opcodes
    • EVM
    • Wei, Ether, Gas
    • Storage
    • ByteCode and Opcodes
    • Transaction costs & Execution costs
  • Reading txn input data
  • Data Representation
  • Yul
    • Yul
      • Intro
      • Basic operations
      • Storage Slots
      • Storage of Arrays and Mappings
      • Memory Operations
      • Memory: how solidity uses memory
      • Memory: Return, Require, Tuples and Keccak256
      • Memory: Logs and Events
      • Inter-contract calls
      • calldata
      • free memory pointer
    • Yul Exercises
      • read state variable
      • read mapping
      • iterate Array, Return Sum
    • memory-safe
  • Upgradable Contracts
    • Upgradability & Proxies
    • UUPS Example
    • Minimal Proxy Example
    • TPP Example
    • 🚧Diamond
      • On Storage
  • Gas Opt
    • Block Limit
    • gasLimit & min cost
    • Solidity Optimiser
    • Memory v calldata
    • Memory caching vs direct storage vs pointers
    • < vs <=
    • reverting early
    • X && Y, ||
    • constant and immutable
    • caching sload into mload
    • Syntactic Sugar
    • using unchecked w/o require
    • Compact Strings
    • Calling a view function
    • Custom errors over require
    • usage of this.
      • multiple address(this)
  • ERCs & EIPs
    • ERC-20.sol
      • Core functions
      • transfer()
      • transferFrom()
      • TLDR transfer vs transferFrom
    • Landing
      • ERC721.sol
      • EIP-721
        • LooksRare
        • Page 1
      • ERC-1271
      • EIP-2981
      • ERC-165
      • EIP-1167: Minimal Proxy Contract
    • VRFConsumerBase
    • UniswapV2Library
  • Yield Mentorship 2022
    • Projects
      • #1 Simple Registry
      • #2 Basic Vault
      • #3 ERC20+ETH Wrapper
        • setFailTransferTrue
      • #4 Fractional Wrapper
      • #5 Collateralized Vault
        • Process
        • Vault.sol
        • Testing
        • Chainlink Oracles
        • Pricing + Decimal scaling
        • Refactor for Simplicity
      • #9 Flash Loan Vault
        • Implementing ERC3156
        • Full code for lender
        • Ex-rate calculation
    • State Inheritance Testing
    • Testing w/ Mocks
    • Yield Style Guide
    • Github Actions
    • TransferHelper.sol
    • math logic + internal fn
    • Interfaces: IERC20
  • Foundry
    • Overview
    • Importing Contracts
    • Testing
      • stdError.arithmeticError
      • assume vs bound
      • Traces
      • label & console2
      • std-storage
  • Smart Contract Security
    • Damn Vulnerable Defi
      • 1. Unstoppable
      • 2. Naive receiver
      • 3. Truster
      • 4. Side Entrance
      • 5. The Rewarder
      • 6. Selfie
      • 7. Compromised
      • 8. Puppet
      • 9. Puppet V2
      • 10 - Free Rider
    • Merkle Tree: shortened proof attack
  • Fixed-Point Math
    • AMM Math
  • Solidity Patterns
    • checks-effects-interactions pattern
    • Router // batch
    • claimDelegate: stack unique owners
    • claimDelegate: cache previous user
  • Array: dup/ascending check
  • Deployment
    • Behind the Scenes
    • Interacting with External Contracts
    • Logging, Events, Solidity, Bloom Filter
  • Misc
    • Mnemonic Phrases
    • Bidul Ideas
  • Archive
    • Brownie Framework
      • Brownie basics
        • storing wallets in .env
        • Deployment to ganache
        • Interacting with contract
        • Unit Testing
        • Testnet deployment
        • Interacting w/ deployed contract
        • Brownie console
      • Brownie Advanced
        • Dependencies: import contracts
        • helpful_scripts.py
        • verify and publish
        • Forking and Mocking
        • Mocking
        • Forking
      • Testing
      • Scripts Framework
        • deploy.py
        • get_accounts
        • deploy_mocks()
        • fund_with_<token>()
      • Brownie Networks
    • Brownie Projects
      • SharedWallet
        • Multiple Beneficiaries
        • Common Code Contract
        • Adding Events
        • Renounce Ownership
        • Separate Files
      • Supply Chain
        • ItemManager()
        • Adding Events
        • Adding unique address to each item
      • Lottery
      • Aave - Lending and Borrowing
        • Approve & Deposit
        • Borrow
      • NFT
      • Advanced Collectible
        • adv_deploy() + Testing
        • Create Metadata
        • Setting the TokenURI
    • node npm
    • Ganache
    • Truffle
    • Remix
    • Installing Env
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On this page
  • Global Import
  • Instead, the Solidity docs recommend specifying imported symbols explicitly.
  • Import Aliases
  • Global Aliases
  • Specific Aliases
  1. Compendium
  2. Modifiers & Inheritance & Import

import styles

https://betterprogramming.pub/solidity-tutorial-all-about-imports-c65110e41f3a

Global Import

The statement below will import all Solidity objects found in “./MySolidityFile.sol”

import “./MySolidityFile.sol”;

“Solidity object” to describe any contract, library, interface, or other constant or variables that you can define at the file level (struct, enum, etc.)

Instead, the Solidity docs recommend specifying imported symbols explicitly.

Import { Something } from “./MySolidityFile.sol”;
  • You can then mention within the curly braces { } the specific symbols/objects that you want to import and use

Import Aliases

Global Aliases

// longer syntax
import * as Endpoints from “./Endpoints.sol”.

// shorter syntax
import “./Endpoints.sol” as Endpoints;

Specific Aliases

import { Point as Coordinate, GPS } from “./Endpoints.sol”;

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Last updated 2 years ago