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Are negative array indexes allowed in C?
...ss the array index is explicitly promoted to 64 bits (e.g. via a ptrdiff_t cast). I have actually seen a bug of his nature with the PowerPC version of gcc 4.1.0, but I don't know if it's a compiler bug (i.e. should work according to C99 standard) or correct behaviour (i.e. index needs a cast to 64 b...
How can I post an array of string to ASP.NET MVC Controller without a form?
... = "";
result += dic["firstname"] + dic["lastname"];
// You can even cast your object to their original type because of 'dynamic' keyword
result += ", Age: " + (int) dic["age"];
if ((bool) dic["married"])
result += ", Married";
return result;
}
The real benefit of this solution i...
Converting from a string to boolean in Python?
... have just spent 4 hours trying to debug my code. My mistake was trying to cast bool("False"). It will always cast to True.
– Ev.
Sep 2 '16 at 12:37
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Fast ceiling of an integer division in C / C++
...promote the arguments into long long's? And doesn't that cost anything, up-casting or down-casting?
– einpoklum
Feb 13 '16 at 20:51
1
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Unable to find specific subclass of NSManagedObject
... error: NSArray element failed to match the Swift Array Element type" when casting the NSManagedObject to its actual class. Actually not when casting itself, but when trying to go into a for loop.
– Rodrigo Ruiz
Mar 11 '15 at 2:22
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How to access property of anonymous type in C#?
...
1. Solution with dynamic
In C# 4.0 and higher versions, you can simply cast to dynamic and write:
if (nodes.Any(n => ((dynamic)n).Checked == false))
Console.WriteLine("found not checked element!");
Note: This is using late binding, which means it will recognize only at runtime if the o...
What column type/length should I use for storing a Bcrypt hashed password in a Database?
...password (using BCrypt) in a database. What would be a good type for this, and which would be the correct length? Are passwords hashed with BCrypt always of same length?
...
Get output parameter value in ADO.NET
...omString = int.Parse(outputIdParam.Value.ToString());
// Throws InvalidCastException
int idFromCast = (int)outputIdParam.Value;
// idAsNullableInt remains null
int? idAsNullableInt = outputIdParam.Value as int?;
// idOrDefaultValue is 0 (or any other value specified to the ?? ope...
Why can I throw null in Java? [duplicate]
...
why does it upcast it to a NullPointerException?
As per JLS 14.18:
A throw statement first evaluates the Expression. If the evaluation of the Expression completes abruptly for some reason, then the throw completes abruptly for that re...
Is there a Boolean data type in Microsoft SQL Server like there is in MySQL? [duplicate]
...valuates to (or converts to in some cases) a 1.
declare @i int = -42
print cast(@i as bit) --will print 1, because @i is not 0
Note that SQL Server uses three valued logic (true, false, and NULL), since NULL is a possible value of the bit data type. Here are the relevant truth tables -
More in...