warg
viper
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warg
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An Efficient Struct Configuration Pattern For Golang
Funcopts aren't always appropriate, but boy do they make things more readable sometimes. I use them pervasively in warg to allow declarative nested CLI commands
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Which packages do you recommend for building cli tools?
I wrote my own! https://github.com/bbkane/warg/
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Major standard library changes in Go 1.20
Very useful! I'll be playing with the error tree additions and studying the HTTP interface extension to see if I can replicate the pattern for https://github.com/bbkane/warg values. Id like to be able to have value-specific output for different types of --help , even ones not in warg
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Have you used generics?
I'm using to allow for custom flag types in my CLI parsing library- a lot less duplicate code
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Go: Functional Options Are Slow
One thing that I find nicer with functional options is building tree-like data structures.
My command line parsing library uses them to declaratively build CLI apps with arbitrarily nested subcommands.
Some examples at https://github.com/bbkane/warg/tree/master/examples
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How are YOU using generics so far?
I'm writing a CLI parsing library, and generics have let me consolidate most of the flag value functionality for different types. So the flags for dbz --level 9000 --type superSaiyan share most of the same code even though one is an int and one is a string. So much fewer copy-paste-modify lines of code now!
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Unix command line conventions over time
This is largely what the Azure CLI does. It simplifies even further by eliminating the no-value option. Instead, you pass "true" or "false" as the value ( --example true ). It's a little more verbose but very easy to parse/write/generate. I like this convention so much I stole it for my homemade Golang CLI parsing library https://github.com/bbkane/warg/ .
viper
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Upload and Delete file from Amazon S3 Bucket in Go using Presigned URLs
Once environment variables are setup we need load them into our project. For this this i will use viper
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Proxy Server in Go
The code uses Viper to load configuration files in the application.
- API completa em Golang - Parte 2
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What 3rd-party libraries do you use often/all the time?
github.com/spf13/viper
- API completa em Golang - Parte 1
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Building RESTful API with Hexagonal Architecture in Go
Instead of directly accessing environment variables with os.Getenv(), integrating a configuration handler like viper might make it maintainable.
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What is the most common approach to configure a backend app?
I guess most people are using https://github.com/spf13/viper but I don't know if I should read everything from
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Could I get a code review?
Use Viper for config file or environmental variable configuration -- it's going to save you a whole lot of time.
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Which packages do you recommend for building cli tools?
Cobra and Viper.
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Library for Python similar to Go's Viper / 12 Factor
I've mostly been using https://github.com/spf13/viper of late for my go projects. It supports the standard config formats, (json, yaml, toml etc) and lets you override any value with a ENV value.
What are some alternatives?
graph - A library for creating generic graph data structures and modifying, analyzing, and visualizing them.
godotenv - A Go port of Ruby's dotenv library (Loads environment variables from .env files)
cli-guidelines - A guide to help you write better command-line programs, taking traditional UNIX principles and updating them for the modern day.
envconfig - Small library to read your configuration from environment variables
workgroup - Structured concurrency manager for Go
koanf - Simple, extremely lightweight, extensible, configuration management library for Go. Support for JSON, TOML, YAML, env, command line, file, S3 etc. Alternative to viper.
golang-generics-dao-example - Example using Generics with DAO
cleanenv - ✨Clean and minimalistic environment configuration reader for Golang
scan - Scan provides the ability to to scan sql rows directly to any defined structure.
kelseyhightower/envconfig - Golang library for managing configuration data from environment variables
RCIG_Coordination_Repo - A Coordination repo for all things Rust Cryptography oriented
mapstructure - Go library for decoding generic map values into native Go structures and vice versa.