276 questions
0
votes
0
answers
133
views
C program to find last three digits of a^b
So, for small numbers my code does work, but it doesn't work for big numbers, for instance 100^10. So someone could help me finding my mistakes, or point out some clues for me to fix my code.
#include ...
1
vote
0
answers
33
views
`DynamicObject` on right hand side of binary operation
I am trying to make my dynamic class behave as System.Int32 in arithmetic expressions. However, I seem to be unable to handle situation when a dynamic instance is being added to an integer:
dynamic i =...
- 3,372
1
vote
1
answer
108
views
How to overflow the result through inputs without editing code
#include <stdio.h>
#include <string.h>
char username[64], password[64], hostname[64];
int main(int argc, char **argv) {
char result[256];
if (argc != 4 ||
...
user16439346
-4
votes
1
answer
197
views
Codeforces's problem 151A I've wrote this program in C language , I think it has some problem. Help me out please [closed]
151A codeforces link
Here is my code written in C language. It has some problem
#include<stdio.h>
#include<conio.h>
int main ()
{
int n,k,l,c,d,p,nl,np,mm,per,tl,to,sum;
...
2
votes
1
answer
418
views
How to pass a dynamic list from IronPython to C#
I want to get a python app to pass a generic list to my C# code. I've created a demo app that duplicates the problem I'm seeing.
I have this python code (Python 2.7), MainApp.py, that calls a C# DLL (....
- 7,503
4
votes
1
answer
1k
views
Transform an expression tree taking IQueryable<T> into one taking IEnumerable<T>
I have an Expression<Func<IQueryable<TIn>,TOut>>, and I'd like to transform it into Expression<Func<IEnumerable<TIn>,TOut>>. Actually, my end goal is to compile the ...
- 5,428
2
votes
1
answer
139
views
DLR: Put statement and declaration objects to CodeCompileUnit or CodeCompileUnit-like objects
IronRuby and IronPython have custom built-ins, standard modules and you can write code straight out of hand(Directly using statements and declarations in the code), instead of using namespaces and ...
1
vote
0
answers
98
views
Why does dynamic call dispatch prefer double conversion to invoking object overload?
I am working on arbitrary object tree conversion to some specific format, using dynamic dispatch (to simplify handling generics). The object tree is generated by interop code, wraps some values into ...
- 3,372
0
votes
1
answer
75
views
RunTimeBinderException when passing int[] to method having parameter type dynamic
Below code work perfectly fine unless I change GetCount parameter type from ICollection to dynamic - it throws RuntimrBinderException Why at runtime Count property is not available ?
static void Main(...
- 4,214
0
votes
1
answer
1k
views
What it means - "IronPython is an implementation of the Python programming language"
I know question looks to be broad and subjective, but am stuck with this definition of IronPython everywhere - "IronPython is an implementation of the Python programming language" Please feel free to ...
- 4,214
2
votes
0
answers
243
views
Using `dynamic` keyword in Unity 2017 with VS 2017 [duplicate]
Unity 2017 introduced an experimental .NET 4.6 Mono backend. Given that Mono seems to support the dynamic language runtime, I'm wondering whether we can finally use dynamic in Unity games (even if it'...
- 14.4k
1
vote
1
answer
1k
views
Why is TryGetMember not invoked on my DynamicObject?
I have the following class for binding to dynamically generated columns on a WPF DataGrid. The column binding has to be a property name, and I can add appropriately named properties to a DynamicObject:...
- 51.4k
1
vote
1
answer
175
views
Without a roadmap, can DLR be used with IronPython, assuming it will continue to be packaged in future .NET Versions
DLR or Dynamic Language Runtime hasn't seen any activity after mid 2010, still around its v1.0 release since then.
I need DLR and IronPython to run my Python code using Numpy and at the same time ...
- 624
0
votes
0
answers
287
views
Passing data to and fro during run time between C# Winform and Python Script, using Ironpython
When I click the button On winform, this get executed:
using (var outStream = new ScriptOutputStream(win.txtOutput))
{
ExecuteScript(outStream);
}
This is the function to run the script.
...
2
votes
0
answers
552
views
accessing dynamic objects in F#
I'm parameterizing some linq queries, and ended up using dynamic linq. Initially I had some trouble extracting the data from the dynamic objects it created but I managed to extract it using FSharp. ...
- 6,322
10
votes
2
answers
1k
views
Expression.Lambda and query generation at runtime, nested property “Where” example
I found very nice answer on a question about building Expression Tree for Where query.
Expression.Lambda and query generation at runtime, simplest "Where" example
Can someone help me and ...
- 1,698
14
votes
2
answers
3k
views
Memory Overflow: Having an increasing number of Microsoft.CSharp.RuntimeBinder.Semantics
We are currently hunting some memory leaks in our application, when doing some operation(loading and closing one project inside our application), we know that the memory increase always a little bit.
...
- 21.1k
2
votes
0
answers
162
views
Do InternalVisibleTo and the Dynamic Language Runtime not work well together?
I have the following class in a Universal Windows exe project (actual functionality not included).
sealed class DataPage
{
public DataPage(dynamic page)
{
Data = page;
}
...
- 15.7k
3
votes
1
answer
500
views
GC.Collect does not call IronPython destructor
I have a simple IronPython class which implements a destructor (__del__) and write some thing to the console
in it. If there is not reference to the instance any more and i call GC.Collect for ...
- 21.3k
6
votes
2
answers
143
views
Which is the code that creates captured variables / closures?
I understand that variable capturing is done by the compiler and not by the classes in the .NET framework itself. However, when the DLR was introduced, some of this work must surely have needed to ...
- 34k
5
votes
1
answer
2k
views
Entity Framework code first and ironpython
Is it possible to use the Entity Framework 6 with the code first pattern and write the models in C# and in IronPython?
The background is, that a few standard models are defined in the c# core, and ...
- 21.3k
7
votes
1
answer
208
views
Weird C# dynamic behaviour [duplicate]
While investigating how C# dynamic keyword works, I stumbled upon some weird behaviour. It almost looks like a bug, but it probably more likely there is a reason for the behaviour.
In the code below, ...
- 722
1
vote
1
answer
516
views
IronPython use namespace without import
Is it possible in IronPython to use a kind of inline namespace? For example:
System.Console.WriteLine("Test")
If i execute the code from above, get the following error: name 'System' is not defined. ...
- 21.3k
0
votes
1
answer
140
views
Why do I have to cast results from dynamic coming into typed parameters
I have a simple dynamic object that returns a double:
class MyDynamic : DynamicObject
{
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
result = 2.0;
...
- 4,837
0
votes
1
answer
81
views
Inspect variables in IronRuby scope
I want browse (and inspect) scope variables of ironruby scope.
If i execute:
a = 15
b = 16
c = a * b
I want to enumerate "a, b, c" and get their value on demand.
I tried runtime.Globals....
- 26.8k
1
vote
0
answers
61
views
Why don't dynamic objects and extension methods play nice? [duplicate]
The causes of the exception:
Extension methods cannot be dynamically dispatched. Consider casting the dynamic arguments or calling the extension method without the extension method syntax.
Have been ...
- 12.5k
1
vote
1
answer
66
views
Is it safe to create a DynamicExpression inside the Fallback of another DynamicExpression?
The title is pretty self explanatory on this one.
To clarify: I've built a pretty complete language infrastructure using dynamic expressions and thought it would be cool to try outputting an assembly....
- 1,519
2
votes
0
answers
2k
views
IronPython Linq Lambda Issue
I am using Linq in a simple IronPython script to perform a lookup against an entity framework database context:
import clr
import System
clr.AddReference('Common')
clr.AddReference('System.Core')
...
user862319
0
votes
2
answers
499
views
Is it safe to use Dynamic Language Runtime (DLR)? How can value type get changed in DLR?
As I recently found the DLR, I see it's possible to change value types in runtime easily. Is there going to be any memory problems or exceptions during runtime? How does the DLR get to change the ...
- 173
0
votes
1
answer
125
views
Why to use the entire DLR in own Script-Engine
I've build my own script engine and im an at the point, that the code is parsed into a nice tree. Now i am facing the problem, that i need to "execute" the tree in my own runtime. That is no problem ...
- 21.3k
5
votes
1
answer
3k
views
Can an ExpandoObject be a list?
I am using Json.Net to deserialize json results into ExpandoObjects using code like the following:
var converter = new ExpandoObjectConverter();
dynamic d = JsonConvert.DeserializeObject<...
- 15.7k
1
vote
0
answers
88
views
IronRuby dead slow under debug
I've just integrated SassAndCoffee into a project. It works great, with the exception of debugging. A single request to a .scss resource returns in 50ms. Hit F5 and refresh, and the exact same request ...
- 9,517
2
votes
1
answer
357
views
Binding behavior of DynamicObject binary operation differs depending on operator and operands
According to the documentation for TryBinaryOperation this method will be called when the left hand side of a binary operation is a dynamic object.
I've got a class that derives from dynamic object ...
- 15.7k
0
votes
1
answer
902
views
Invoking IronPython function from C# after IronPython runtime was disposed
Suppose we have the following code in IronPython:
def hello():
print "Hello from Python"
We call function hello() in the following C# code:
private static void GetPythonFunction()
{
...
- 4,797
1
vote
1
answer
356
views
Optimising Method Calls on Dynamic Type
I have the following code that instantiates a registered COM object
private dynamic server = null // Global variable.
...
Type type = Type.GetTypeFromProgID("Svr.GrpCall");
this.server = Activator....
- 23.9k
16
votes
2
answers
24k
views
How to embed lua (or some other scripting language) in a C# 5.0 application
First of all, I'd like to appoligize in advance for my English.
My question is specifically about what do I need to have in a C# application to be able to interpret a Lua script fed to said ...
- 213
0
votes
1
answer
318
views
Where is the DLR Expression Tree API?
Linq Expression Trees can be found in the System.Linq.Expressions namespace in the System.Core.dll assembly.
In which assembly and in what namespace is the DLR Expression Tree API?
Is it that the ...
- 34k
4
votes
1
answer
618
views
Learning DLR (how to implement a language on top of it)
I am trying to learn how to write a simple scripting language on top of DLR, by playing with a very old DLR example called ToyScript. However ToyScript does not seem to support the following structure ...
- 41
5
votes
2
answers
669
views
C# DLR, Datatype inference with Dynamic keyword
Just Asking :
Why 'withOffset' variable is inferred as dynamic as Parse method returns Struct ?
dynamic str = "22/11/2013 10:31:45 +00:01";
var withOffset = DateTimeOffset.Parse(str);
and after ...
- 2,033
0
votes
1
answer
810
views
Using dynamic object in ASP.NET MVC model
Edit 1:
I have done some research and would like to simplify the question :
I would like to have a model with a dynamic object.
public dynamic AdditionRuntimeData;
this object will be populated at ...
- 888
1
vote
2
answers
247
views
Intercepting method invocation to c# objects
I have an hybrid c# object, with some instance properties and methods, and I pass it to IronPython. What I want is to syncronize the dispatch to the c# members, both static and dynamics, from Py code.
...
- 399
5
votes
2
answers
1k
views
DynamicMethods, Expression Trees and the DLR
I have some questions about the interactions and relationships between DynamicMethods, Expression Trees and the DLR.
I know that LambdaExpression.Compile uses an ILGenerator internally to create a ...
- 36.7k
0
votes
1
answer
2k
views
Missing reference to Microsoft.scripting.ExtensionAttrribute.dll
We intermittently get this error on our .net 4 web forms web site. Recycling the app pool seems typically resolves it.
The only references i can find to it seem to be related to either using Umbraco, ...
- 7,685
20
votes
2
answers
2k
views
Code coverage, analysis and profiling for dynamically generated code
I have a demo project, which creates an assembly and uses it. I also can debug the injected code. But if I run coverage, analysis or profiling, it is counted, but I want to measure it.
Code:
...
- 897
4
votes
4
answers
3k
views
Dynamically use runtime compiled assemlby
I compile code dynamically from code:
string code = @"
namespace CodeInjection
{
public static class DynConcatenateString
...
- 897
3
votes
2
answers
10k
views
How do I add `System.Dynamic` to my project?
I am new to C# 4, especially the dynamic keyword. I have seen quite a number of tutorials and wish to try it out myself using VS 2012 Ultimate (MSDN).
Unfortunately I cannot seem to find System....
- 5,342
-1
votes
1
answer
3k
views
The call is ambiguous between the following methods or properties - overloads with string and byte[] inputs
Adding this for posterity since I couldn't find anything specific in my Googling endevors.
Problem:
The call is ambiguous between the following methods or properties: 'System.Web.HttpUtility....
- 10.5k
3
votes
4
answers
7k
views
How to convert List<Dapper.SqlMapper.FastExpando> to runtime type (List<IDictionary<string,object>>)
I'm using a method that has a return signatur of IEnumerable<dynamic>. At runtime for a particular call it is returning List<Dapper.SqlMapper.FastExpando>.
var x0 = repo.Find(proc, param);...
- 4,731
9
votes
2
answers
455
views
Attempting to bind a dynamic method on a dynamically-created assembly causes a RuntimeBinderException
I have a handy utility method which takes code and spits out an in-memory assembly. (It uses CSharpCodeProvider, although I don't think that should matter.) This assembly works like any other with ...
- 12.9k
9
votes
2
answers
925
views
How does the "is" operator work with dynamic objects?
How does the is operator work with respect to the DLR?
To make my question a little more explicit, consider the following signature:
public bool Is<T>(Func<dynamic> getInstance)
{
...
- 42.6k