IT – Karol memo

Using the OpenAI API in a C# console application

Repo: https://github.com/kaajoj/OpenAIApp To run it, you need to provide your own API key. Sample code with request to generate new image: https://github.com/kaajoj/OpenAIApp/blob/cc1881a985365683c90484e9cb2dca7c1361b810/OpenAIApp/OpenAI.cs#L52 Sample results of image generation: Big dogs flying a plane to Mars Dogs like top gun

New console template – use user secret

dotnet user-secrets init set a secret: dotnet user-secrets set “API_KEY” “test123” use UserSecretsId (from .csproj file) in AddUserSecrets()

Truffle test – ReferenceError: accounts is not defined

When you run command ‘truffle test’ and get error:“ReferenceError: accounts is not defined” To fix this, use below code line:contract(“Contract”, async (accounts) => {} and put test code between brackets e.g.:

Error: Number can only safely store up to 53 bits

I got this error: ‘Error: Number can only safely store up to 53 bits’ when using toNumber function: Quick fix using BigInt:

Create new ERC20 token – smart contract

Sample smart contract to create your own token: The same code, but with a hard-coded name, symbol and initial supply: Sources:https://docs.openzeppelin.com/contracts/4.x/erc20https://solidity-by-example.org/app/erc20/https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.0.0/contracts/token/ERC20/ERC20.sol

Problem with disabled WiFi and Unknown USB Device (Device Descriptor Request Failed)

TLDR:disable unknown USB device -> disable wifi -> hibernate -> plug off power cable -> turn on laptop –> enable wifi WiFi card: Intel(R) Wireless-AC 9560 160MHz Errors:Error (status): This device cannot start. (Code 10)Error (status): Windows has stopped this device because it has reported problems. (Code 43) When fail all methods that you tryContinue reading “Problem with disabled WiFi and Unknown USB Device (Device Descriptor Request Failed)”

Mock IConfigurate in xUnit

If you want mock IConfiguration use following code: or copy secrets.json configuration file to output directory: projectName\bin\Debug\netcoreapp3.1 and then use following code in ContextFixture: Config json file e.g. secrets.json:

Secret storage in .NET

Enable secret storage:Type “dotnet user-secrets init” into Package Manager Console <UserSecretsId> can be found in .csproj file. Set a secret (Package Manager Console):dotnet user-secrets set “ApiKey” “test123” or to remove it:dotnet user-secrets remove “ApiKey” To check if exists:dotnet user-secrets listorManage secret through GUI -> right click on project -> Manage User Secrets -> it opensContinue reading “Secret storage in .NET”

The term ‘dotnet-ef’ is not recognized – Entity Framework error

Quick post about fixing Entity Framework, probably common error when you want to use ef for the first time e.g. you installed Visual Studio on new pc, fresh os, new project etc. and want to make dotnet-ef migrations or database update. Error message:“dotnet-ef : The term ‘dotnet-ef’ is not recognized as the name of aContinue reading “The term ‘dotnet-ef’ is not recognized – Entity Framework error”

Scaffolding in .NET Core (generate API controllers – CRUD (or MVC controller with views in necessary)

Right click on ‘Controllers’ folder –> Add –> New Scaffolded Item… For api controller without views select ‘API Controller with actions, using Entity Framework’ and click ‘Add’.If MVC then choose ‘MVC Controller with views, using using Entity Framework’ On next view select your model (you need create model before generate code) and select data contextContinue reading “Scaffolding in .NET Core (generate API controllers – CRUD (or MVC controller with views in necessary)”