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When to use which design pattern? [closed]
...tructure, UML diagram and working examples in multiple languages including C# and Java .
Check list and Rules of thumb in each sourcemakding design-pattern provides alram bell you are looking for.
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How to convert IEnumerable to ObservableCollection?
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The C# Function to Convert the IEnumerable to ObservableCollection
private ObservableCollection<dynamic> IEnumeratorToObservableCollection(IEnumerable source)
{
ObservableCollection<dynamic> SourceCollec...
How do I make a checkbox required on an ASP.NET form?
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C# version of andrew's answer:
<asp:CustomValidator ID="CustomValidator1" runat="server"
ErrorMessage="Please accept the terms..."
onservervalidate="CustomValidator1_ServerValidate"></asp:CustomVal...
Why should I care that Java doesn't have reified generics?
...ic Foo() {
this.t = new T(); // Help?
}
}
This does work in C# assuming that T has a default constructor. You can even get the runtime type by typeof(T) and get the constructors by Type.GetConstructor().
The common Java solution would be to pass the Class<T> as argument.
publi...
Pass array to ajax request in $.ajax() [duplicate]
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I am doing this, with my C# controller having both a List<string> and a string[] parameter, but in both cases, the array being past ends up being one comma-delimited string in the first element of the List<string> or string[] param. Any ...
Mod of negative number is melting my brain
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Please note that C# and C++'s % operator is actually NOT a modulo, it's remainder. The formula for modulo that you want, in your case, is:
float nfmod(float a,float b)
{
return a - b * floor(a / b);
}
You have to recode this in C# (or ...
Converting from IEnumerable to List [duplicate]
...o this very simply using LINQ.
Make sure this using is at the top of your C# file:
using System.Linq;
Then use the ToList extension method.
Example:
IEnumerable<int> enumerable = Enumerable.Range(1, 300);
List<int> asList = enumerable.ToList();
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Setting a WebRequest's body data
...nother one. Most likely you have been given an api and want that into your c# project.
Using Postman, you can setup and test the api call there and once it runs properly, you can simply click 'Code' and the request that you have been working on, is written to a c# snippet. like this:
var client = n...
Linq Query keeps throwing “Unable to create a constant value of type System.Object…”, Why?
...this is in the context of an IQueryable, so it's not compiled into regular C# code. It becomes an expression that is passed to a query provider. That query provider can do whatever wants with the query, and it may handle Equals and == the same or not.
– Servy
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How to use LINQ to select object with minimum or maximum property value
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So you are asking for ArgMin or ArgMax. C# doesn't have a built-in API for those.
I've been looking for a clean and efficient (O(n) in time) way to do this. And I think I found one:
The general form of this pattern is:
var min = data.Select(x => (key(x), x)).Min...