solidity: 无法在实现代码中打印log. 只能用event来实现非常原始的输出。 好消息是可以使用 foundry在单元测试中打印log. solidity: for 跟java一样   for(i = 0; i < array.length; i++ ) ... if 跟java一样 class/contract 跟java一样 override 跟...

refer to: https://ethereum.stackexchange.com/questions/143171/hardhat-vs-foundry-which-to-use-for-testing https://jamesbachini.com/hardhat-vs-foundry/ 这个文章很精彩  先说下我这些天使用foundry的感受： 1. 速度超级快，运...

refer to: https://alpha-app.agentlayer.xyz/aegisx 例如：对这个代码： pragma solidity ^0.8.0; import "./ReentrancyGuard.sol"; /** * @title A Very Safe Lender */ interface ERC20Like { function tran...

refer to: https://hardhat.org/ignition/docs/guides/modifications 首次部署贼简单 不过我失败了。准备使用foundry 第二次部署（修改了contract之后） const { buildModule } = require("@nomicfoundation/hardhat-ignition/modules"); modu...

refer to: https://stackoverflow.com/questions/65234522/warning-spdx-license-identifier-not-provided-in-source-file // SPDX-License-Identifier: MIT 挺无语的，这个跟java的package有啥区别？没任何区别啊。根本没作用啊。跟<xml ?...

构成：blockchain -> contracts -> methods ... contract :  源代码在本地编写，本地编译，部署到远程（链上） 一旦contract部署到了链上，无法更改，只能调用。

refer to: https://ethereum.stackexchange.com/a/156128/30431 例如，给定某个网络，获得某个contract的abi: 1. 先获得对应contract的bytecode: curl -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","meth...

refer to: kimi, https://ethereum.stackexchange.com/questions/42272/is-it-possible-to-assign-a-map-as-a-mappings-value 三重mapping的例子： // SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.13; c...

refer to: 2022: https://www.panewslab.com/zh/articledetails/l9hj2ngug39u.html 2023: https://www.fx168news.com/article/433280

refer to: https://medium.com/@kulman.david/how-to-use-remix-debugger-to-learn-solidity-assembly-5a745a22bb07 1. copy代码到remix 2. compile, deploy 3. 调用 调用后，可以看到debug信息 步骤，对应的代码，消耗的gas: 具体使用： // S...

eth:  solidity trx:  solidity, javascript eos: c++ solana: rust ,c avalanche: solidity, bnb: bsc:  solidity polygon: solidity

refer to: https://www.evm.codes/playground?unit=Wei&codeType=Bytecode&code=%27%7E3560203501%7E526020%7Ef3%27%7E6000%01%7E_&fork=cancun 在这里可以对EVM（汇编）进行调试

refer to:https://docs.huff.sh/get-started/installing/#installing-huff 安装：（奇了怪了，我一直无法安装），后来在tokyo服务器上安装的 curl -L get.huff.sh | bash 声明一个ABI 声明一个macro #define function addTwo(uint256, uint256) vi...

refer to: https://docs.huff.sh/tutorial/evm-basics/#technical Stack EVM的stack machine是1024个层次，每个层次是32bytes. 后入先出（ last in, first out ) Memory: 可扩展（可改变） 消耗gas  calldata   跟memory...

refer to: https://gist.github.com/hindol/4483374 1.  使用命令：sudo visudo   修改文件： /etc/sudoers 2. 保证添加这一句： Defaults env_keep+="http_proxy ftp_proxy all_proxy https_proxy no_proxy" 就可以了。 3. 验...

https://www.gptshunter.com/

以下都是copy来的。。。给自己一个思路. https://www.bilibili.com/video/BV1oF411F7hG?p=4&spm_id_from=pageDriver&vd_source=760370308ce01ce4b34ea757917ac641 POE.  以下COPY自POE. 人工智能（Artificial Intelligenc...

refer to: https://pyimagesearch.com/2015/01/26/multi-scale-template-matching-using-python-opencv/ 结论： 最好还是用手动截取的template 缩放截取的，匹配度比较低。 关键代码: # 缩放模板图像 scale_percent = 60 # 缩放比例为60% width = int(te...

https://docs.python.org/3/library/unittest.html 非常简单： class: class VisionTool: def __init__(self): pass def get_current_player_cards(self, source_image_name): pass 对应的测试文件...

refer to: https://linuxconfig.org/install-vmware-tools-on-ubuntu-22-04-jammy-jellyfish-linux 1. # UBUNTU 22.04 SERVER:$ sudo apt install open-vm-tools # UBUNTU 22.04 DESKTOP:$ sudo apt install ope...