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What would be C++ limitations compared C language? [closed]
..._t) );
To make it compile as C++ you have to write:
foo_t* foo = static_cast<foo_t*>( malloc ( sizeof(foo_t) ) );
which isn't valid C any more. (you could use the C-style cast, it which case it would compile in C, but be shunned by most C++ coding standards, and also by many C programmers...
C# vs Java generics [duplicate]
...ompiled classes are not actually generic. They compile down to Object and casts. In effect Java generics are a compile time artifact and can easily be subverted at runtime.
C# on the other hand, by virtue of the CLR, implement generics all they way down to the byte code. The CLR took several b...
What does void mean in C, C++, and C#?
...
Not disagreeing, but an additional use of void is in the "cast to void" trick to suppress warnings for unused values. It's a bit of a stretch since it doesn't really correspond with how the compiler interprets things, but you can interpret that to mean "I'm using this value to do no...
How do I check for nulls in an '==' operator overload without infinite recursion?
...
Cast to object in the overload method:
public static bool operator ==(Foo foo1, Foo foo2) {
if ((object) foo1 == null) return (object) foo2 == null;
return foo1.Equals(foo2);
}
...
convert an enum to another type of enum
...), value.ToString());
If you mean by numeric value, you can usually just cast:
Enum2 value2 = (Enum2)value;
(with the cast, you might want to use Enum.IsDefined to check for valid values, though)
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Get type of a generic parameter in Java with reflection
... I get this exception : Exception in thread "main" java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.reflect.ParameterizedType not sure what is the constraint .
– Dish
Feb 29 '16 at 14:25
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Java: how do I get a class literal from a generic type?
...pe erasure.
Java generics are little more than syntactic sugar for Object casts. To demonstrate:
List<Integer> list1 = new ArrayList<Integer>();
List<String> list2 = (List<String>)list1;
list2.add("foo"); // perfectly legal
The only instance where generic type information...
Get value of c# dynamic property via string
...
-1. This only work with simple .NET objects that were casted to dynamic. It will not work with any custom dynamic object like Expando or ViewBag used ASP.NET MVC
– Philipp Munin
Jan 28 '15 at 19:12
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List of Delphi language features and version in which they were introduced/deprecated
...dynamic arrays to a pointer using the @ operator is only allowed when hard-casting the array.
More flexible namespace resolution of unit names
Delphi 10.1 Berlin
Native support for Utf8String and RawByteString type on all platforms
The [weak], [unsafe] and [volatile] attributes are support...
Can you get the column names from a SqlDataReader?
...lumns = reader.GetSchemaTable().Rows
.Cast<DataRow>()
.Select(r => (string)r["ColumnName"])
.ToList();
//Or
var columns = Enumerable.Range(0, reader.FieldCount)
...