序列化F＃函数(Serializing an F# function)

 使用F＃我有一些配置，我想使用Newtonsoft.Json序列化到磁盘。 配置数据是记录类型。 记录类型中的一个字段是string-> bool类型的函数，用于将字符串与给定值进行比较。 例如 
 
(fun (x:string) -> x = "1")
 
 序列化类型成功但字段未成功存储（记录为“{}”）因此反序列化失败。 这似乎是设计上的。 
 
 如何存储函数，以便在反序列化时仍可用于从磁盘填充记录类型并仍可执行？ 
 
 我把引文看作是将表达式存储为数据的一种方法，但我不确定这是否可行。 如果是，那么我正在努力让这个工作。 
 
 如何实现我的需求？ 
 
 更新; 
 
type Logic = string -> bool
 
 记录类型存储配置; 
 
type Exclusion = 
| FromDataValue of QItem * Logic * ExcludedItems
| FromDataValuesAnd of (QItem * Logic) seq * ExcludedItems          
| FromDataValuesOr of (QItem * Logic) seq seq * ExcludedItems 
 
 “排除”记录由用户填充，并针对某些数据集运行，不包括返回集合中的项目。 QItem表示应用Logic函数的数据集中的字符串，如果返回true，则ExcludedItems中的项目将从结果中排除。 
 
 最初，配置是由解决方案中的用户创建的，所以一切正常。 但是，一旦创建了配置，我希望能够将配置保存到光盘，以便在需要时可以加载并再次运行。 
 
 所以我需要能够存储它，但我希望能够将其存储为字符串，然后在加载时再次运行它。 

Using F# I've some configuration that I want to serialize to disk using Newtonsoft.Json. The config data is a record type. One of the fields in the record type is a function of type string->bool and is used to compare a string to a given value. e.g.
 
(fun (x:string) -> x = "1")
 
Serializing the type succeeds but the field isn't successfully stored (it is recorded as '{}') and therefore deserializing fails. This seems to be by design.
 
How do I store a function so that it can be used to populate the record type from disk when deserialized and still be executable?
 
I've looked at quotations as a means of storing expressions as data but I'm not sure if this is the way to go. If it is then I'm struggling to get this working.
 
How can achieve what I need?
 
Update;
 
type Logic = string -> bool
 
The record type storing config;
 
type Exclusion = 
| FromDataValue of QItem * Logic * ExcludedItems
| FromDataValuesAnd of (QItem * Logic) seq * ExcludedItems          
| FromDataValuesOr of (QItem * Logic) seq seq * ExcludedItems 
 
The Exclusion record is populated by a user and runs against some data sets excluding items from the return collection. The QItem represents a string in the dataset that the Logic function is applied to, and if returns true the items in ExcludedItems are excluded from the results.
 
Initially the config is created by a user within the solution so all works fine. However once a config is created I want to be able to save the config to disc so that it can be loaded and run again when required.
 
So I need to be able to store this, but I want to be able to store it as a string then run it again when loaded. 

原文：https://stackoverflow.com/questions/51540040