or-tools
viper
or-tools | viper | |
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57 | 74 | |
10,446 | 25,862 | |
0.9% | - | |
9.9 | 8.8 | |
7 days ago | 2 days ago | |
C++ | Go | |
Apache License 2.0 | MIT License |
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or-tools
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or-tools VS timefold-solver - a user suggested alternative
2 projects | 4 Jan 2024
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A* Tricks for Videogame Path Finding
Small NP-hard problems aren't actually that bad. You can usually formulate them as eg a integer programming problem or a SMT problem, and throw an off-the-shelf solver at them.
You only need to learn the solver once, and you can re-use it for all kinds of problems. (Assuming that your instances don't have to be solved with low latency. Eg only as part of your level generation process, or at most when loading a randomly generated level, but not every frame or so.)
https://developers.google.com/optimization has a decent collection of tools.
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Ask HN: Comment here about whatever you're passionate about at the moment
Just saw that it looks like an upcoming release of OR-Tools might include reified tables: https://github.com/google/or-tools/commit/94f3d9b46870e7ea04...
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[P] Advice needed for what tool/algorithm is appropriate
Google OR - Tried to represent a solution to be a 5 dimensional matrix with an hour granularity. Dimensions are stations, program, project manager, day and time. If matrix[station][program][project manager][day][time] = 1, then that set is assigned, otherwise not. The main issue encountered here is about time slots, as they are not necessarily on a per hour basis. We tried time slots to be in a 5-minute interval. However, constructing the constraints that would adhere to each programs duration was proven to be difficult.
- What software is used in the field these days?
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Sudoku solver
If you are just interested in getting a solution or for having a reference solver: There is a sudoku example in the OR-Tools package that uses constraint programming.
- Matrix / 2d Array Puzzle-Like Problem
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Linear Programming
Not sql, but check out google’s OR-Tools. Hardly ever gets mentioned but looks very capable for some applications. https://developers.google.com/optimization
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Would anyone know how to auto schedule tasks based on certain constraints?
Then there's also the Google's solution: https://developers.google.com/optimization/
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Assignment to at most K groups from distance matrix?
start enumerating the properties you think the solution to your problem should have. once you have this, you should be able to reformulate those properties as constraints and then you can just plug this into a combinatorial solver such as https://developers.google.com/optimization
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?
OptaPlanner - Java Constraint Solver to solve vehicle routing, employee rostering, task assignment, maintenance scheduling, conference scheduling and other planning problems.
godotenv - A Go port of Ruby's dotenv library (Loads environment variables from .env files)
optapy - OptaPy is an AI constraint solver for Python to optimize planning and scheduling problems.
envconfig - Small library to read your configuration from environment variables
pyomo - An object-oriented algebraic modeling language in Python for structured optimization problems.
koanf - Simple, extremely lightweight, extensible, configuration management library for Go. Support for JSON, TOML, YAML, env, command line, file, S3 etc. Alternative to viper.
SciPy - SciPy library main repository
cleanenv - ✨Clean and minimalistic environment configuration reader for Golang
optaplanner-quickstarts - Mirror of https://github.com/apache/incubator-kie-optaplanner-quickstarts
kelseyhightower/envconfig - Golang library for managing configuration data from environment variables
SWIG - SWIG is a software development tool that connects programs written in C and C++ with a variety of high-level programming languages.
mapstructure - Go library for decoding generic map values into native Go structures and vice versa.