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Difference between DirectCast() and CType() in VB.NET
...just gotten into VB.NET. I generally use CType (and CInt, CBool, CStr) for casts because it is fewer characters and was the first way of casting which I was exposed to, but I am aware of DirectCast and TryCast as well.
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Specifically, what's dangerous about casting the result of malloc?
... the first one), you can get an unpredictable runtime error when using the cast without including stdlib.h.
So the error on your side is not the cast, but forgetting to include stdlib.h. Compilers may assume that malloc is a function returning int, therefore converting the void* pointer actually re...
How to automatically convert strongly typed enum into int?
...rted into integer type, while strongly typed enums can not do it without a cast.
11 Answers
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How do I fix "The expression of type List needs unchecked conversion…'?
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The warning-free approach is to create a new List<SyndEntry>, then cast each element of the sf.getEntries() result to SyndEntry before adding it to your new list. Collections.checkedList does not do this checking for you—although it would have been possible to implement it to do so.
By d...
Type safety: Unchecked cast
...ext().getBean("someMap");
Secondly, the compiler is complaining that you cast the object to a HashMap without checking if it is a HashMap. But, even if you were to do:
if(getApplicationContext().getBean("someMap") instanceof HashMap) {
private Map<String, String> someMap = (HashMap<S...
C++ convert hex string to signed integer
...gt;> x;
// output it as a signed type
std::cout << static_cast<int>(x) << std::endl;
}
In the new C++11 standard, there are a few new utility functions which you can make use of! specifically, there is a family of "string to number" functions (http://en.cppreference.co...
How to cast an Object to an int
How can I cast an Object to an int in java?
19 Answers
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Getting the max value of an enum
... Bang = 2
}
// this gets Fizz
var lastFoo = Enum.GetValues(typeof(Foo)).Cast<Foo>().Last();
Edit
For those not willing to read through the comments: You can also do it this way:
var lastFoo = Enum.GetValues(typeof(Foo)).Cast<Foo>().Max();
... which will work when some of your en...
Does it make sense to use “as” instead of a cast even if there is no null check? [closed]
.... That sounds like trying to micro-optimize to me. You should use a normal cast when you are sure of the type. Besides generating a more sensible exception, it also fails fast. If you're wrong about your assumption about the type, your program will fail immediately and you'll be able to see the caus...
Easiest way to convert int to string in C++
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@Flying: under VS2010 you have to explicitly cast the converting integer to one of the following types [_Longlong, _ULonglong, long double]; i.e: string s = to_string((_ULonglong)i);
– Zac
Dec 6 '13 at 14:50
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