Assume I have a class and an instance method:
ClassExample#methodExample
^"???"
Is there any way in Smalltalk to get the name of the method:
var := ClassExample new.
nameOfMyMethod := var methodExample.
"nameOfMyMethod should be 'methodExample' (a string or symbol)"
?
I'm developing in VisualAge. Thanks for help!
Try this:
methodExample
^(Processor activeProcess stackAtFrame: 0 offset: -9) selector
Related
Here I have an Objective - C Method:
+(void)postSaveCoinOrder:(OrderSaveCoinOrderRequestModel *)model returnInfo:(void(^)(OrderSaveCoinOrderResponseModel* resModel))retMode;
and I want call it in Swift file. tried many times but don't work.
Can someone help me?
Try this...
let request = OrderSaveCoinOrderRequestModel.init()
CLASS_NAME.postSaveCoinOrder(request) { (response) in
}
CLASS_NAME is the name of the class where postSaveCoinOrder is defined.
Have you add a bridge file in your project?
If so, code like this...
let model = OrderSaveCoinOrderRequestModel()
CLASSNAME.postSaveCoinOrder(model: model, returnInfo: {
(retModel: OrderSaveCoinOrderRequestModel) -> () in
...
})
I think this will be more detailed.
How can I inject a custom method into a .net assembly using mono.cecil, and then call it in the entrypoint?
I like to do this to implement security methods after the binary is built.
To inject method you need to get the type you want to add it the method and then add a MethoDefinition.
var mainModule = ModuleDefinition.ReadModule(assemblyPath);
var type = module.Types.Single(t => t.Name == "TypeYouWant");
var newMethodDef= new MethodDefinition("Name", MethodAttributes.Public, mainModule.TypeSystem.Void);
type.Methods.Add(newMethodDef);
To call this method form the entry point, you need to get the entry point MethodDefinition and the new injected MethodReference and add instruction in the entry point method to call the new injected method.
var newMethodRef = type.Methods.Single(m => m.Name == "Name").Resolve();
var entryPoint= type.Methods.Single(m => m.Name == "YourEntryPoint");
var firstInstruction = entryPoint.Body.Instructions.First();
var il = entryPoint.Body.GetILProcessor();
il.InsertBefore(firstInstruction, Instruction.Create(OpCodes.Callvirt, newMethodRef));
mainModule.Write(assemblyPath);
Note: Yes I know its C# and not VB but I'm sure once you got the idea you can easily convert it to VB.
You can make use of the Module.Import() function.
Example Class can be seen in the video:
https://www.youtube.com/watch?v=heTCisgYjhs
Credits to TheUnknownProgrammer's importer class.
I am having a page with Telerik Upload Control.
I want to save the file Extension in database.
I am using GetExtension() Method.
It gives me a wrong Extension when the file has '.' in the name.
Example : Micro.18-7.pdf
When i am trying to get the Extension of the file,it shows ".18-7".
please anyone help me in this to solve this.
Thanks in advance.
Regards,
AGM Raja
Create your own method like such
static string GetFileExtension(string fileName)
{
var result = fileName.Split('.');
return result[result.Length - 1];
}
I am using RhinoMocks 3.6 and would like to use the multimock feature to implement both a class and a interface.
var mocks = new MockRepository();
var project = mocks.StrictMultiMock(
typeof(Project),
typeof(INotifyCollectionChanged));
using (mocks.Record())
{
((INotifyCollectionChanged)project).CollectionChanged += null;
LastCall.Constraints(Is.NotNull()).Repeat.Any();
}
The LastCall is working though. I get this message :
System.InvalidOperationException : Invalid call, the last call has been used or no call has been made (make sure that you are calling a virtual (C#) / Overridable (VB) method).
What am I doing wrong here??
Have you actually checked that the Project class has methods you can override as the error message indicates? I'll assume you have. :-)
I'd suggest you switch to using the AAA syntax instead of record/replay as shown here:
I assume you're wanting to know if the class under test reacts the right way when the CollectionChanged event is fired? If that's the case, you can do it something like this:
var project = MockRepository.GenerateMock<Project, INotifyPropertyChanged>();
project.Expect(p => p.SomeMethod())
.Repeat.Any()
.Raise(p => ((INotifyCollectionChanged)p).CollectionChanged += null,p,new NotifyCollectionChangedEventArgs());
I want to know if it's possible to retrieve the variables name from when it was passed into a certain function. For example, if I call parseId(myId) to a function with the signature parseId(id), i can obviously retrieve the value of 'id'. However, is there any way I can retrieve 'myId' as a string (without passing it as another value)?
Specifically in vb.net, but I'm interested in how it would work in any given language.
This is all just random thoughts.. feel free to dismiss or not ;-p
Re your comment about use with stored procedures... if you want to go that route, I wouldn't mess around with the local variable names; that is an implementation detail. However, you could expose those details on an interface method and use the names from there, since that is more formalised - for example (C#):
interface ICustomerRepository {
Customer GetById(int id); // perhaps an attribute to name the sproc
}
You can use similar expression-tree parsing (as discussed here) to get the name and value of the parameter, for example:
var repoWrapper = new Repo<ICustomerRepository>();
int custId = 12345;
var cust = repoWrapper.Execute(r => r.GetById(custId));
Here we'd want to resolve the argument to GetById as "id" (not "custId"), with value 12345. This is actually exactly what my protobuf-net RPC code does ;-p (just don't ask me to translate it to VB - it is hard enough to write it in a language you know well...)
No, you can't do that in the normal sense. What are you really trying to accomplish with this?
You can do this in .NET 3.5 and above using expression trees; I'll knock up a C# example, and try to run it through reflector for VB...
C#:
static void Main()
{
int i = 17;
WriteLine(() => i);
}
static void WriteLine<T>(Expression<Func<T>> expression)
{
string name;
switch (expression.Body.NodeType)
{
case ExpressionType.MemberAccess:
name = ((MemberExpression)expression.Body).Member.Name;
break;
default:
throw new NotSupportedException("Give me a chance!");
}
T val = expression.Compile()();
Console.WriteLine(name + "=" + val);
}
The VB is below, but note that the VB compiler seems to use different names (like $VB$Local_i, not i):
Sub Main()
Dim i As Integer = 17
WriteLine(Function() i)
End Sub
Private Sub WriteLine(Of T)(ByVal expression As Expression(Of Func(Of T)))
If (expression.Body.NodeType <> ExpressionType.MemberAccess) Then
Throw New NotSupportedException("Give me a chance!")
End If
Console.WriteLine((DirectCast(expression.Body, MemberExpression).Member.Name
& "=" & Convert.ToString(expression.Compile.Invoke)))
End Sub