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Collections of generic structs with embedded locks in golang


Collections of generic structs with embedded locks in golang

By : I-Ta Hsieh
Date : November 20 2020, 11:01 PM
it should still fix some issue It's impossible to store the wrapping type in []*ThignWithLock since go has no notion of structural subtyping.
Your assertion that an interface will result in copying is incorrect, and you can get the desired effect by doing:
code :
type InterfaceOfThingThatParticipatesInAHierarchy interface {
    AddChild(InterfaceOfThingThatParticipatesInAHierarchy)
    SetValue(int)
}

type ThingWithLock struct {
    ...
    children []InterfaceOfThingThatParticipatesInAHierarchy
}

func (thingWithLock *ThingWithLock) AddChild(newChild InterfaceOfThingThatParticipatesInAHierarchy) { ... }


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Cannot implicitly convert type 'System.Collections.Generic.List<Library.Product>' to 'System.Collections.Generic.L

Cannot implicitly convert type 'System.Collections.Generic.List<Library.Product>' to 'System.Collections.Generic.L


By : user3610870
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , This conversion is not possible, otherwise you could add a OtherHierarchicalEntity to List so its not safe. You can cast explicitly and return a new list:
code :
  return Products.Cast<IHierarchicalEntity>().ToList();
Cannot implicitly convert type 'System.Collections.Generic.List<String>' to 'System.Collections.Generic.IEnumerabl

Cannot implicitly convert type 'System.Collections.Generic.List<String>' to 'System.Collections.Generic.IEnumerabl


By : syed
Date : March 29 2020, 07:55 AM
wish helps you Error message is quite clear. Your LINQ query returns collection of string, because you're selecting name.ProductName, but your method is declared to return collection of Products_Products.
Change your LINQ query to return not just ProductName but the product itself:
code :
IEnumerable<Products_Products> x = new List<Products_Products>();
var test = (from name in db.Products_Products select 
                name).ToList();
public IEnumerable<string> getprod()
Cannot implicitly convert type 'System.Collections.Generic.List to 'System.Collections.Generic.IEnumerable<BOL.tblchq

Cannot implicitly convert type 'System.Collections.Generic.List to 'System.Collections.Generic.IEnumerable<BOL.tblchq


By : Dawn Leeming
Date : March 29 2020, 07:55 AM
wish of those help You projection Select(...) returns for each item of _db.tblchqNoes that passes you Where an anonymous type with three properties and not a tblchqNo object. So the return type of your method is not compatible to that your return. There are two options:
Create a type with the three properties you want to return and change both the return type of your method and the type you use during the projection. If we suppose that the class you would define has the name ShortChqNo then you should made the following changes:
golang - reflection on embedded structs

golang - reflection on embedded structs


By : dias
Date : March 29 2020, 07:55 AM
wish helps you The 'transparency' you expected is just syntactic sugar and has nothing to do with the data representation. If you want to have a function that flattens your data structure, you would have to write it by yourself.
For example (On play):
Cannot implicitly convert type 'System.Collections.Generic.List<System.Collections.Generic.IEnumerable<long>>

Cannot implicitly convert type 'System.Collections.Generic.List<System.Collections.Generic.IEnumerable<long>>


By : CruffyNek
Date : March 29 2020, 07:55 AM
hope this fix your issue You need SelectMany:
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