英文:
Is there any Rules Engine/Inference Engine for Go
问题
我们想使用Go来实现我们的业务逻辑，但是我们找不到任何好的Go规则引擎/推理引擎的实现。有人有任何经验或建议吗？
英文:
We want to implement our business logic using Go, but we cannot find any good implementation of rules engine/inference engine for Go. Does anyone have any experience or suggestions?
答案1
得分: 3
有一个项目旨在用Go实现一个ISO Prolog编译器：GoLog。我还没有测试过它，但是考虑到它实现了一些基本的Prolog，它应该是一个相当有能力的基于规则的推理引擎。
此外，在godoc.org上搜索“rule”也会得到一堆包：
- godoc.org/?q=rule
英文:
There is a project that aims to implement an ISO Prolog compiler in Go:
I haven't tested it, but given that it implements some basic Prolog, that should be quite a capable rule-based reasoning engine, AFAIS.
Otherwise, a search for "rule" over at godoc.org also yields a bunch of packages:
答案2
得分: 1
我所了解的类似这样的最好例子是在许多标准库中采用的“表驱动”单元测试方法。例如，fmttests。
除此之外，Go是一种强大而表达力强的语言。你实际上需要什么？在Go中有许多状态机实现的例子，还有一些具有声明性JSON配置的Web框架。
如果你指的是适当的逻辑编程，目前还没有流行的Go库。
英文:
The best example of something like this to my knowledge is the 'table-driven' approach to unit tests taken in much of the standard library. For example, the fmttests.
Beyond that, Go is a powerful, expressive language. What do you actually need? There are a number of examples of state machine implementations in Go, and a number of web frameworks with declarative JSON configuration.
If you mean proper logic programming, there's no popular Go library for it yet.
答案3
得分: 1
如果你熟悉JBoss Drools，现在在Golang中有类似的东西。
看看这个https://github.com/newm4n/grool
它有类似于Drools DRL的DSL，称为GRL。
规则减速“当测试车减速时，我们继续降低速度。”优先级10 {
当
TestCar.SpeedUp == false && TestCar.Speed > 0
然后
TestCar.Speed = TestCar.Speed - TestCar.SpeedIncrement;
DistanceRecord.TotalDistance = DistanceRecord.TotalDistance + TestCar.Speed;
}
英文:
If you're familiar with JBoss Drools, now there's something similar in Golang.
Check this out https://github.com/newm4n/grool
It has DSL similar to Drools DRL, called GRL.
rule SlowDown "When testcar is slowing down we keep decreasing the speed." salience 10 {
when
TestCar.SpeedUp == false && TestCar.Speed > 0
then
TestCar.Speed = TestCar.Speed - TestCar.SpeedIncrement;
DistanceRecord.TotalDistance = DistanceRecord.TotalDistance + TestCar.Speed;
}
答案4
得分: 0
请查看 https://github.com/antonmedv/expr
它可以解析以下表达式:
# 如果用户组在以下列表中，则获取特殊价格
user.Group in ["good_customers", "collaborator"]
# 当文章评论数大于100且文章分类不在以下列表中时，将文章推广到主页
len(article.Comments) > 100 and article.Category not in ["misc"]
# 当产品库存小于15时发送警报
product.Stock < 15
对它们进行类型检查并进行评估。
此外，代码质量非常好： 
英文:
Take a look at https://github.com/antonmedv/expr
It can parse next expressions:
# Get the special price if
user.Group in ["good_customers", "collaborator"]
# Promote article to the homepage when
len(article.Comments) > 100 and article.Category not in ["misc"]
# Send an alert when
product.Stock < 15
Type check them and evaluate.
Also code really good:
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