Ambiguity can refer to two related concepts: 'ambiguous calls' and 'ambiguous grammars'.
Questions tagged [ambiguity]
400 questions
5
votes
1 answer
Why is a malformed function used instead of an implicit conversion?
This is my Snippet:
class Base{};
class Derived : private Base{};
template
class Wrapper
{
public:
template
Wrapper( T2&& )
{ }
};
// Function declarations
void func( Base& param );
void func(…
Jakob Riedle
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5
votes
1 answer
Are these Python programs for detecting the ambiguity of a finite grammar correct?
I've been doing Udacity CS262 and for the Detecting Ambiguity problem I'm not sure if my solution is correct and I'm not sure if the "official" solution is correct either.
Brief description of the problem: Write a function isambig(grammar, start,…
user2108462
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5
votes
1 answer
Problems with an ambiguous grammar and PEG.js (no examples found)
I want to parse a file with lines of the following content:
simple word abbr -8. (012) word, simple phrase, one another phrase - (simply dummy text of the printing; Lorem Ipsum : "Lorem" - has been the industry's standard dummy text, ever since the…
static
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5
votes
2 answers
Ambiguity error while overloading var args method and wrapper methods in java
I tried to compile following code but got error
static void test(long... x)
{
System.out.println("long...");
}
static void test(Integer... x)
{
System.out.println("Integer...");
}
public static void main(String [] args) {
int no=5;
…
sar
- 1,277
- 3
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5
votes
2 answers
Understanding a case of Haskell Type-Ambiguity
I wrote a Haskell program and got a compile error I don't understand.
The program should:
Get the command line arguments
Concatenate tokenized arguments back to a single String
Read the String into a NestedList data type
Flatten the NestedList into…
recursion.ninja
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5
votes
2 answers
Forward declaring a function that uses enable_if : ambiguous call
I have some trouble forward declaring a function that uses boost::enable_if: the following piece of code gives me a compiler error:
// Declaration
template
void foo(T t);
// Definition
template
typename…
Luc Touraille
- 79,925
- 15
- 92
- 137
5
votes
2 answers
Why does vb.net reject assignment to nested covariant interface as "ambiguous"
In the code:
Interface ISelf(Of Out TMe)
End Interface
Class SomeBase
Implements ISelf(Of SomeBase)
End Class
Class SomeDerived
Inherits SomeBase
Implements ISelf(Of SomeDerived)
End Class
Module ISelfTester
Sub TestISelf()
…
supercat
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5
votes
2 answers
Why ambiguities with generics are inconsistent, instead of raising errors?
Possible Duplicate:
Generic methods and method overloading
Say I have a class like
class SortedList
{
public string this[int i] { get { return "a"; /* dummy sample code */ } }
public string this[K key] { get { return "b"; /* dummy…
user541686
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- 886
4
votes
1 answer
Left factorisation in Parsing Expression Grammar
I’m trying to write a grammar for a language which allows the following expressions:
Function calls of the form f args (note: no parentheses!)
Addition (and more complex expressions but that’s not the point here) of the form a + b
For example:
f…
Konrad Rudolph
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4
votes
2 answers
haskell -- odd ambiguous type variable error message for code in "where" statement with TypeFamilies extension
Does anyone know why this code fails?
{-# LANGUAGE NoMonomorphismRestriction,
TypeFamilies #-}
module Test where
asExprTyp :: Expr γ =>
γ α
-> α
-> γ α
asExprTyp x _ = x
int = undefined :: Integer
class Expr γ where
…
gatoatigrado
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4
votes
2 answers
Resolving ambiguity
I have a controller with 3 overloads for a create method:
public ActionResult Create() {}
public ActionResult Create(string Skill, int ProductId) {}
public ActionResult Create(Skill Skill, Component Comp) {}
in one of my views I want to create this…
ekkis
- 9,804
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4
votes
1 answer
Class member access using qualified-id in case of ambiguity
Consider a struct B derived from two structs A<1> and A<2>, each defining a typename D to itself, and there is also a global typename D. Then one writes .D:: after a B object , which D must be taken?
template struct A{ int v = N; using D = A;…
Fedor
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4
votes
1 answer
call to function is ambiguous, but why?
#include
using namespace std;
void x(int a,int b){
cout<<"int int"<
Robert Page
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4
votes
1 answer
LINQ to SQL: How to handle ambiguous column names when joining tables?
I'm going to bootstrap this question with a previous one I asked:
LINQ to SQL: Multiple joins ON multiple Columns. Is this possible?
So I have a LINQ query:
var query =
from t1 in myTABLE1List // List
join t2 in myTABLE1List
…
aarona
- 35,986
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4
votes
1 answer
Promotion of parameters during overloading
I was studying about overloading and I am completely getting confused with promotions. I looked at few articles in SO (implicit conversion sequence in function overloading) and I am sure some more are available, but could not find the right article.…
Rajesh
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