We will also install Solmate for their. pkr November. This installation method has been tested on Linux and MacOS. Installation npm install --save-dev erc721a Usage. Describe the feature you would like. txt if needed As your question lacks details, it is not possible to tell which of these steps you have done and which solutions you have attempted so far. Details. openzeppelin folder is not compatible with those of the OpenZeppelin CLI. I try to re-install openzeppelin many times to change the version, but it keeps generating many strange file into my node_modulesm, and now I just don’t know what to do TvT If try to install the openzepplin in a totally blank folder, everything looks normal, but once I install it inside my project, everything just such a mess :(As you have Git installed, you can install OpenZeppelin Network. You can then use the command line to create a new project folder and initialize it with npm. After installing foundry as directed by the documentation, I used the command " forge init hello_foundry" to create. Since your ERC-721 contract uses imported OpenZeppelin libraries, you must put all the imports into one . Create advanced NFTs with OpenZeppelin ERC721 Presets Create advanced NFTs with OpenZeppelin ERC721 Presets Overview Project Idea Truffle Setup OpenZepplin ERC721 Token Presets. Install both truffle and openzeppelin solidity. Although OpenZeppelin is well known for its security audits, using OpenZeppelin Contracts is not a substitute for a security audit. Following up, our Foundry Upgrades library is available as a tech preview and can be used to help with proxy deployments and upgrade safety checks. Follow. Make sure the correct Smart Contract is selected from the dropdown. In the require statement, it checks the value of. Keeping the cache folders, the difference is huge as well: Foundry took 0. Exit the Truffle Console and Re-Open it. This will download foundryup. Foundry apparently is ignoring the rule that when multiple remappings match, the one with the longest prefix should be chosen. 17 seconds. Solidity support for Visual Studio code. Try yourself! Before you go to the next Lesson, try yourself to deploy to Görli via MetaMask. Install Foundry If you have not installed Foundry, Go to book. It can be used to manage dependencies, compile a project, run tests and deploy smart contracts. 0 added 1 package in 1. Apart for reproducing the same problem I also noticed that forge init still fired a git commit despite it shouldn't be doing this as per fix #252. A Simple Token using OpenZeppelin Contracts v3. What is Foundry? Foundry is a toolset for Ethereum development written in Rust that assists developers in managing dependencies, compiling projects, running tests, deploying contracts, and interacting with blockchains through the command line interface. Verifying Smart Contracts with Foundry¶ With Foundry the Contract verification works automatically, so you actually shouldn't need to do anything. Install and Configure Foundry (Forge) Testing Smart Contracts with Foundry Deploy Smart Contracts using Foundry Thank you 🙇🏻♂️ Learn. Change Working directory. openzeppelin folder is not compatible with those of the OpenZeppelin CLI. Update with new foundry and test refactors. Louper - The Ethereum Diamond Inspector - User interface for diamonds. OpenZeppelin Contracts is a library for secure smart contract development. Secure Deploy: automated security features for successful deployments and upgrades. The latest audit was done on October 2018 on version 2. $ npm install @openzeppelin/cli. April 16, 2022 20:18. @ moonbirds. js and npm installed on your machine. js using Git Bash terminal. This new release introduces UUPS proxies as a cheaper alternative to Transparent proxies. Which led me to spot a thing or two. default] remappings = [ "@openzeppelin/contracts=node_modules/@openzeppelin/contracts/" ] To use git submodules/forge install please note that the correct method is: forge install openzeppelin/openzeppelin-contracts This points to the correct github repo and will install under the lib sub directory Project setup How to install dependencies in Foundry (EX. chain. Hi, I was following the OpenZepellin doc on developing smart contracts and after installing truffle (in my current working directory) with command npx truffle init I then tried installing the OpenZeppelin contracts library (also in my current working directory) with command npm install --save-dev @openzeppelin/contracts it seemed like it worked, but. ⌃K{"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":". Learn more about TeamsCREATE2 is an assembly op-code for Solidity to create a Smart Contract on a specific address. 0 because it’s the last version of OpenZeppelin contracts running Solidity version 0. Initial commit. Installing Foundry is simple and straightforward. If you face any issues during installation, you can refer to the official Foundry documentation. And did you have to open any empty folders or anything to get it right? I don't understand why VS Code doesn't want to install OpenZeppelin. Learn more about TeamsTour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this siteThe core development principles and strategies that OpenZeppelin is based on include: security in depth, simple and modular code, clarity-driven naming conventions, comprehensive unit testing, pre-and-post-condition sanity checks, code consistency, and regular audits. I don't remember who wrote the original docs for. If you use Linux or macOS, you can get Foundry by the following the steps: Install the latest release by using foundry up. We highly recommend reading the migration guide, especially the part on supportsInterface if you are using with OpenZeppelin extensions (e. Step 1: Write your token deploy script. Installation: forge install. As technical partners, they have proven invaluable to helping secure smart contracts built on the network and we greatly look forward to our continued collaboration. initializer. Creating a Smart Contract. Next you type in npm install -E openzeppelin-solidity. Install Truffle Flattener. 9 by installing from npm: $ npm install @openzeppelin/contracts Or by visiting the. The plugins support the UUPS, transparent, and beacon proxy patterns. Collect CTFs related to evm, and provide solutions, using Foundry. For OpenZeppelin Contracts you should only use code published in an official release, the example above imports. submodule set-branch only adds the entry in . 0 is available for both Hardhat and Foundry environments, as well as in OpenZeppelin Wizard. Contribute to ichidao/template-foundry-contracts-0-7 development by creating an account on GitHub. Additionally, a new ERC20 extension allows easy creation of tokens with built-in flash minting, and a new small utility contract provides a function batching mechanism that requires no extra work to set up. Component Forge Have you ensured that all of these are up to date? Foundry Foundryup What version of Foundry are you on? forge 0. 17. D3Vault provides a fund pool for market makers in DODO V3, maximizing capital utilization. Patrick is an advisor on the Chainlink project. UUPS. Get testnet ETH. The contract implementation is the following: The contract uses the OpenZeppelin audited ERC-721 contract templates. I guess your imported contracts have dependencies that are missing on your local folder, I also see you are mixing old and new contracts since SafeMath is obsolete in solidity >=0. I'm using the latest OpenZeppelin code that is downloaded from NPM. Installing Foundry. I'm using the latest OpenZeppelin code that is downloaded from NPM. Install a specific version of a dependency: forge install transmissions11/[email protected] setup How to install dependencies in Foundry (EX. We support the logging functionality from Hardhat's console. Cast - 用于与合约交互的命令行界面. txt - You will need to re-run this every time you modify libraries in Foundry. Improve this answer. OpenZeppelin Contracts exists thanks to its contributors. 1 Creating a project Gnosis Chain: Simple soulbound token with Remix and OpenZeppelin; Cronos: Dutch auction smart contract with Hardhat; Filecoin: Deploy a deal-making contract using Hardhat; Fantom: ERC-721 collection contract with Truffle and OpenZeppelin; Starknet: An NFT contract with Nile and L1 <-> L2 reputation messaging; Harmony: A simple metaverse. The SDK changes the name. Lead. comOpenZeppelin is a set of vetted smart contracts. The library includes the proxy pattern implementations and TypeScript wrappers around them, while the CLI manages their. toml file:Foundry is a smart contract development toolchain. $ curl -L. txt - You will need to re-run this every time you modify libraries in Foundry. 877705Z) What command(s) is the bug in? forge install Operating System macO. This project is maintained by OpenZeppelin with the goal of providing a secure and reliable library of smart contract components for the ecosystem. Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust. Make sure your contracts behave as expected. For upgradeable contracts, the storage layout of different major versions should be assumed incompatible, for example, it is unsafe to upgrade from 4. I am still newish to the workings of Git and GitHub too. // SPDX-License-Identifier: MIT pragma solidity ^0. To install openzeppelin contracts (or other libraries) Then run the command foundryup to install foundry on your local system. The Foundry Book explains the installation of Foundry very well. Learn more about TeamsRemember that deploying to a public test network is a necessary step when developing an Ethereum project. Install Foundry¶ To install Foundry, you run an actual shell script on your computer. Feel free to follow this README at your own pace. Connect and share knowledge within a single location that is structured and easy to search. This will install Foundryup, then simply follow the instructions on-screen, which will make the foundryup command available in your CLI. 如果你需要用到像是 Openzeppelin 或 Solmate 的 library，用 forge install ，後面接的參數是該 library 的 Github repo 名稱（可包含 tag 或 commit）。 Foundry 為了. 0 through v4. 1 Initialize a new Foundry project: Open up a terminal and run this command: 1. Dappsys V2; 0xSequence; OpenZeppelin; About. This repository hosts the Upgradeable variant of ERC721A, meant for use in upgradeable contracts. DiamondScan - User inteface for diamonds. The CLI will prompt you for a project name and version, defaulting to the ones from the package. Install and Configure Foundry (Forge) Testing Smart Contracts with Foundry Deploy Smart Contracts using Foundry. Join over 100. husky","path":". At present, this repository contains both the contracts for EigenLayer and a set of general "middleware" contracts, designed to be reuseable across different applications built on top of EigenLayer. instead of: vscode. [profile. Now, cd into the newly created folder, and run the following Truffle command: truffle init. Foundry; Foundryup; What version of Foundry are you on? forge 0. (the last two are yet to be published under the new naming on npm) Migrating from ZeppelinOS to the OpenZeppelin SDK. Create project and install dependencies. Changelog 5. ; Reusable Solidity components to build custom contracts and complex decentralized systems. OpenZeppelin Contracts uses semantic versioning to communicate backwards compatibility of its API and storage layout. At the command promt, enter: node -v. We address security through risk management in various areas such as engineering and open source best practices, scoping and API design, multi-layered review processes, and incident. pip install openzeppelin-cairo-contracts. Install Foundry. I don't remember who wrote the original docs for the VSCode integration, but going by the VSCode Solidity extension docs, these two settings are for something else and might overwrite remappings. We recommend using Upgrades Plugins instead. Merging 2 repos: + - GitHub - Omnia-DeFi/foundry-hardhat-template-origin. Note: the format of the files within the . Here, the proxy is a simple contract that just delegates all calls to an implementation contract. Installing Foundry is simple and straightforward. ; The contract creates two tokens: 100 fungible units of the currency called FUNGIBLE and 1 non-fungible unit called NON-FUNGIBLE. These are just a few examples, but the possibilities are endless. On Linux and macOS. This is because there’s no easier way to import globally. 2. For a full list of configuration options, see the Foundry configuration documentation. Testing the EIP-712 permit in Solidity using Foundry. 0 (16b4ef6 2022-07-13T00:15:34. forge remappings > remappings. The latest OpenZeppelin contract does not have an isOwner() function anymore, so we have to create our own. Note: You should only use code published in an official release of OpenZeppelin Contracts, the latest release is 3. npm install --save-dev hardhat - Install Hardhat. MIT. This variant is available as separate package called erc721a-upgradeable. 2. toml. Please note this does not represent an endorsement of these projects. It also lets one interact with the blockchain from the CLI or via Solidity scripts. What is OpenZeppelin? OpenZeppelin is a crypto cybersecurity technology and services company. You should see the ETH show up in your metamask. Luckily that's fairly easy with openzeppelin. I am a big fan of Andreas Bigger’s Foundry Starter so I’ll be using that here in this tutorial. In the BEP-1155 standard, setting a token issuance to 1 makes it non-fungible. stackoverflow. The framework includes a number of reusable smart contract components, such as token contracts, access control contracts, and math libraries. Install multiple dependencies: forge install transmissions11/solmate@v7 OpenZeppelin/openzeppelin-contracts. 5. We currently recommend that you copy this contract, place it in your test folder, and import it into the contract where you wish to use. 45 seconds (almost instant), while Hardhat took 3. Currently, remappings. tags and shas are not supported. submodule set-branch only adds the entry in . Start by setting up a Foundry project following the steps outlined in the Getting started section. First of all, we would need to create a new Foundry project via: forge init solidity-scripting. Open your terminal and type in the following command: curl -L | bash. If no, there is an implementation contract here. Reload to refresh your session. forge install Openzeppelin/[email protected]] remappings = [ "@openzeppelin/contracts=node_modules/@openzeppelin/contracts/" ] To use git. In Getting Started, we learned how to set up a new OpenZeppelin project, deploy a simple contract, and upgrade it. By default,. If you are upgrading your contract from a previous version, add the @custom:oz-upgrades-from <reference> annotation to the new version of your contract according to Define Reference Contracts or specify the referenceContract option when calling the library's functions. Create project and install dependencies. Then, navigate inside erc20_upgradeable, and your project structure should look like this: . The root generation, proof generation, and verification functions are all fuzz tested (configured 5,000 runs by default) using arbitrary bytes32 arrays and uint. Foundry; Foundryup; What version of Foundry are you on? No response. mkdir my-project cd my-project python3 -m venv env source env/bin/activate. The Foundry Book is the definitive resource if you want to read more about Foundry. Using foundry. These are some of the projects that have implemented or plan to use ERC721A. from the same stackoverflow answer: branch entry accepts branch name only. pip install starknet. This concise hardhat tutorial has 3 sections and this is section 2. My current thought is as following: do a regex match r"^v?d+(. 0, as well as a new, deeply integrated user experience: Secure Code: automatic code analysis on every PR. There seems to be a problem with the detection of an existing git repository when forge init is run in a sub-dir. Foundry Starter Kit. 1. @natanloterio It appears that vscode-solidity just does not support multi-root workspaces yet. Readme License. @adidas (airdrop) ERC721A is an improved implementation of the IERC721 standard that supports minting multiple tokens. 3. openzeppelin. chain. changeset","contentType":"directory"},{"name":". Brownie offers development and live environments that allow testing. 4. You can watch these beginner tutorials if you are a visual learner. Some benefits of packages include: Easily importing and building upon code ideas written by others. . You'll need to add the following variables to a . 0 votes. For a general overview of how Ethereum and smart contracts work, the official website hosts a Learn about Ethereum section with lots of beginner-friendly content. We just need to include it. It is one of the most well-known and user-friendly cryptocurrency wallets and can also be used for authentication and access to decentralized applications. To install OpenZeppelin, you need to have Node. If you use a non-standard project layout, you may have to add the following to your . . Note:The test will fail if it is run after the proposal goes into an active state, but if you want to run it, try adding block 16392065 to the command and adding the "--fork-block-number" flag. Foundry. I would like to know how to install llibraries such as openzeppelin , or if that is against the design philosophy of foundry. “Contracts” on the right side of the remapping. Installation: forge install OpenZeppelin/openzeppelin. Build on a solid foundation of community-vetted code. sol","path":"contracts/token/ERC721. Optionally, add your ETHERSCAN_API_KEY if you want to verify your contract on Etherscan. Foundry由四个工具组成：. 收集 EVM 类的 CTF 挑战，并提供解决方案。 - GitHub - WTFAcademy/WTF-CTF: Collect CTFs related to evm, and provide solutions, using Foundry. Not able to install contracts/mocks :computer: Environment Truffle :memo:Details contracts/mocks does not install when I install @openzeppelin-contracts. Reload to refresh your session. solidity. contract - The name or fully qualified name of the contract to. Teams. Deploying to a network. Liquidity providers (LPs) can deposit assets into this contract to earn interest. Share. , OpenZeppelin) Integrating Foundry with VSCode; Writing the contract and test cases using Foundry; Understanding traces in Foundry; Generating gas report using Foundry; Deploying the contract using Foundry; Installation. ; The contract also has. buildInfoDir - the path to the build info directory which contains JSON files with Solidity compiler input and output. Copy and paste the following code into your code editor (be it Remix IDE or Visual Studio): // SPDX-License-Identifier: MIT. AccessManaged: A module for connecting a contract to an authority in charge of its access control. This means that. Smart Contract Pausing Functionality. Say goodbye to complex setups and tedious configurations, and say hello to a simplified and efficient process that enables you to focus on writing robust smart contracts and bringing your decentralized applications (DApps) to life. Forge. Then run the command foundryup to install foundry on your local system. I would like to keep the contracts the same using the remappings. Developers can leverage secure practices to build ECR20, ECR721, ECR1155, Governer, and custom smart contracts through interactive wizard tools or with Remix. If you are upgrading your contract from a previous version, add the @custom:oz-upgrades-from <reference> annotation to the new version of your contract according to Define Reference Contracts or specify the referenceContract option when calling the library's functions. 2 is because the uniswap modules which we will shortly install use solidity version 0. Mocking users. We announced Foundry v0. As technical partners, they have proven invaluable to helping secure smart contracts built on the network and we greatly look forward to our continued collaboration. "Working with OpenZeppelin has given our institutional clients an extra layer of confidence, trust, and ease when interacting with the enterprise-grade Hedera network. 8. OpenZeppelin is used through a local installation in your project. Writing Tests with Foundry. This will avoid issues that arise from having global dependencies, and will let you have different. 0. sol contract requires Solidity ^0. vscode in your project root like : My compiler is not recognizing my import. Check out OpenZeppelin Defender — a secure platform for automating and monitoring your operations. Ideally, for the OpenZeppelin Contracts repository, forge would fetch the tags and install the latest tag (according to semver) that is not a release candidate. Windows. . Although OpenZeppelin is well known for its security audits, using OpenZeppelin Contracts is not a substitute for a security audit. Setting up a Foundry project You signed in with another tab or window. I can't build my smart contract using Foundry because my dependency isn't recognized. sol. Although OpenZeppelin is well known for its security audits, using OpenZeppelin Contracts is not a substitute for a security audit. $ npm install @openzeppelin/cli If you’re unfamiliar with Node and npm, head to our guide on Setting Up a Development Environment . We will also install Solmate for their ERC721 implementation, as well as some OpenZeppelin utility libraries. Install and Configure Foundry (Forge) Testing Smart Contracts with Foundry Deploy Smart Contracts using Foundry Thank you 🙇🏻♂️ Learn. This is the easiest option for Linux and macOS users. #. Install and Configure Foundry (Forge) Testing Smart Contracts with Foundry Deploy Smart Contracts using Foundry. Create a new project using a template: Specify directories in. Murky contains contracts that can generate merkle roots and proofs. github","contentType":"directory"},{"name":"ai-prompting-f23","path":"ai. The Hitchhiker’s Guide to Smart Contracts in Ethereum will help you get an overview of the various tools available for smart contract development, and help you set up your environment. environment: foundry_auto_detect_remappings or dapp_auto_detect_remappings If enabled, Foundry will automatically try auto-detect remappings by scanning the libs folder(s). 2 . Right now it only installs packages to lib folder. 1, all projects using the UUPS proxy pattern should initialize their implementation contracts. Today, we are introducing four major developments for Defender 2. Foundry is created by Paradigm, an investment firm focused on crypto. Create a directory for your project, then cd into it and create a Python virtual environment. Lead. sol, we can create a base setup. , @nomiclabs/hardhat-waffle ethereum-waffle chai @nomiclabs/hardhat-ethers ethers). Ethernaut CTF - Foundry edition What is Ethernaut by OpenZeppelin. The two tasks include the ability to retry a transaction and retrieve the current gas cost. 0 or something between to 0. ; GovernorTimelockAccess: An adapter for time-locking. "Working with OpenZeppelin has given our institutional clients an extra layer of confidence, trust, and ease when interacting with the enterprise-grade Hedera network. At the time of writing this, the current version is 4. scripts. 0. Now, we will build a more interesting project with multiple contracts, leveraging the OpenZeppelin Contracts Ethereum Package. If you have Foundry installed, you can run: forge init foundry && cd foundry. License. Brownie Package Manager ¶. Cast: Swiss army knife for interacting with EVM smart contracts, sending transactions and getting chain data. sol”: - How to Create and Deploy an ERC20 Token - In 20 minutes. run node --version on a terminal to check your installation: any version of the 14. Install a dependency without creating a submodule: Initialize the Repository. github. In a small project like this, the difference may not be that important but in bigger projects, it can make a difference. You can get setup with one for free from Alchemy. BTW, when I run the npm install, it'll sometimes show up in my mode_modules folder for my entire computer. Installation. To make it easier to work with Solidity files within VS Code, you need to install an extension that supports solidity within the workspace. Setting up a Foundry projectYou signed in with another tab or window. Content wise, there isn't much new. As part of this tutorial, we’ll make a simple test PoC and run it. Install the dependency Configure it to match your Solidity source code using remappings. by @ deeppatel 1,471 reads. This will choose the default settings which will allow Hardhat to create a basic sample project in your projects root directory. x. 617669537Z) What command(s) is the bug in?. env file:. If you're new to smart contract development, head to Developing Smart Contracts to learn about creating a new project and compiling your contracts. Q&A for work. Foundry is made up of three components: Forge: Ethereum testing framework (like Truffle, Hardhat, and DappTools). 0 (9de25d1 2022-01-26T00:23:17. Since importing OpenZeppelin contracts in Remix also imports their functions, you can simply call the “ mint ” function inside your constructor: _mint(msg. In the same directory, install the rest of the dependencies. Though I would recommend moving to using Windows Subsystem for Linux (this is what I use). Foundry. As OpenZeppelin continues to set the standard for secure blockchain development, we encourage developers and builders to always remain current on the latest smart contracts updates. {"payload":{"allShortcutsEnabled":false,"fileTree":{"contracts/token/ERC20/utils":{"items":[{"name":"SafeERC20. Damn Vulnerable DeFi - Foundry Version Topics. Dev Compendium. npx hardhat - Setup your Hardhat project as you see fit in the same directory. Next, you can. x line should be compatible with most Ethereum software. Disclaimer What is Foundry Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust. Easy: Hook up our Ledger and send a transaction back using the same command in the console. Learn More Join our community. Install the dependencies by running the following commands from the root of your project: Contribute to sambacha/foundry-docs development by creating an account on GitHub. Open your terminal and type in the following command: curl -L | bash. Open your terminal and type in the following command: curl -L | bash. Once your installation is configured, initialize a Foundry project with the following command and navigate inside the directory: forge init erc20_upgradeable && cd erc20_upgradeable. To get a copy of this cheatsheet, refer to. 0 license Activity. vm. txt if needed As your question lacks details, it is not possible to tell which of these steps you have done and which solutions you have attempted so far. Overview Installation Hardhat, Truffle (npm) $ npm install @openzeppelin/contracts OpenZeppelin Contracts features a stable API, which means that your contracts won't break unexpectedly when upgrading to a newer minor version. ERC2981). Install the dependency Configure it to match your Solidity source code using remappings. address) and the address of the new implementation ( boxV2. For some OS, you might want to install rust before installing Foundry. openzeppelin. org, open the contacts folder, and create a new file called “Token. Install a dependency: forge install transmissions11/solmate. openzeppelin folder is not compatible with those of the OpenZeppelin CLI. First install openzeppelin with the npm installer: npm i @openzeppelin/contracts The command above will install the current version of openzeppelin. tag before git checkout (here and here); if there's a match, we get the list of tags in the repo with git tag; show the list of matching tags and let user select which one to use. Brownie allows you to install other projects as packages. The exact steps to install foundry will depends on your system. But in essence it is the setup that will get you up and running with creating and deploying your ICO smart contract. py The Proxy Contract. Then create a new folder, open VSCode (or PowerShell, or a Terminal), init a new Truffle project and install OpenZeppelin Contracts:About Foundry. We will learn about linking Ethereum Packages, and writing upgradeable contracts. OpenZeppelin Contracts is made available under the MIT License, which disclaims all warranties in relation to the project and which limits the liability of those that contribute and maintain the project, including. On Linux and macOS. Secure Audit: a streamlined workflow for audits to track issues and resolutions. sol constructor and passing for the name and symbol parameters as "MyToken" and "MTKN" respectively. Existing projects can visit our upgrade guide, where we advise using OpenZeppelin Defender’s code module to ensure your dependencies are up to date. 0 (d3d8c0b 2022-12-26T00:04:10. but another problem occur:(. log. I am using the one by ‘Juan. 1537047Z) What command(s) is the bug in? forge init hello_foundry. Try removing src and lib, as the docs state:. We want to install forge install Uniswap/v3-periphery and then run forge install Uniswap/v3-coreComponent. You signed out in another tab or window. 8. src. g. I just tried it out:) 2 Likes. There is a guide to correctly import and use libraries, such as Math. To manage our upgrade in Gnosis Safe we use the OpenZeppelin app (look for the OpenZeppelin logo). 🎉 Foundry is installed! 🎉. Escrow that holds funds for a beneficiary, deposited from multiple parties. 45 seconds (almost instant), while Hardhat took 3. sol. This way your environment will be reproducible, and you will avoid future version conflicts. femplate as main reference; foundry; Openzeppelin; forge-std; forge-template by FrankieIsLost.