pflag
Drop-in replacement for Go's flag package, implementing POSIX/GNU-style --flags. (by spf13)
viper
Go configuration with fangs (by spf13)
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| pflag | viper | |
|---|---|---|
| 13 | 73 | |
| 2,298 | 25,695 | |
| - | - | |
| 0.0 | 8.8 | |
| about 1 month ago | 7 days ago | |
| Go | Go | |
| BSD 3-clause "New" or "Revised" License | MIT License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
pflag
Posts with mentions or reviews of pflag.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-05-07.
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issue with pflag flagset
My understanding is that you can use pflag as a drop in replacement of the standard lib's flag (import flag "github.com/spf13/pflag"). So it can be used as a standalone lib I suppose.
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Which packages do you recommend for building cli tools?
I realy enjoyed the patched version from spf13 with "--" support https://github.com/spf13/pflag
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Define custom command-line flag types in Go 1.19
Nice, but Cobra (with pflag underneath) is so, so better.
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-h --help -help help --? -? ????
Not by default on stdlib. There are libraries available though - https://github.com/spf13/pflag
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Coral, a friendly Cobra fork with nearly all its features, but only 4 dependencies
Flag functionality is provided by the pflag library, a fork of the flag standard library which maintains the same interface while adding POSIX compliance.
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xflags: An approach to command line flags with support for subcommands, positional args, environment variables, etc.
How does it compare to https://github.com/spf13/pflag ?
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The flag package: strange but good?
spf13 has a drop in pflag that does the - short and -- long flags.
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What are your favorite packages to use?
oklog/ulid to generate IDs. coreos/go-oidc for validating JWTs I get from auth. google/go-cmp for comparing structs in tests (unless the project is already using Testify). spf13/pflag because life's too short for Go's flag handling. getkin/kin-openapi for validating reqests/responses against my OpenAPI spec (in tests).
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akamensky/argparse: Argparse for Golang. Just because "flag" sucks!
What are the benefits of this package over the widely used spf13/pflag?
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Go’s highly modular nature makes it particularly good for situations where requirements are changing or evolving.
3
viper
Posts with mentions or reviews of viper.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-01-20.
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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.
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Two ways to provide configuration: command-line, yaml file.
Not only that, the "unmarshall to struct" method doesn't work at all for environment variables. https://github.com/spf13/viper/issues/188
What are some alternatives?
When comparing pflag and viper you can also consider the following projects:
flag - Flag is a simple but powerful command line option parsing library for Go support infinite level subcommand
godotenv - A Go port of Ruby's dotenv library (Loads environment variables from .env files)
cobra - A Commander for modern Go CLI interactions
envconfig - Small library to read your configuration from environment variables
kingpin - CONTRIBUTIONS ONLY: A Go (golang) command line and flag parser
koanf - Simple, extremely lightweight, extensible, configuration management library for Go. Support for JSON, TOML, YAML, env, command line, file, S3 etc. Alternative to viper.
go-flags - go command line option parser
cleanenv - ✨Clean and minimalistic environment configuration reader for Golang
complete - bash completion written in go + bash completion for go command
kelseyhightower/envconfig - Golang library for managing configuration data from environment variables
argparse - Argparse for golang. Just because `flag` sucks
mapstructure - Go library for decoding generic map values into native Go structures and vice versa.