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In C++, what is a virtual base class?
...ve happened to any symbol (e.g. typedef, member variable, member function, cast to the base class, etc.). This really is a multiple inheritance issue, an issue that users should be aware to use multiple inheritance correctly, instead of going the Java way and conclude "Multiple inheritance is 100% e...
PHP Difference between array() and []
...oo'=>'bar', 'baz'=>'biz']; to convert an array (using explicit type casting) to an object (stdClass) but regarding the {}, it could be implemented in future but not sure tho :-)
– The Alpha
Jan 27 '16 at 17:39
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Is 1.0 a valid output from std::generate_canonical?
...alues happen to round up to IEEE 1.0f but that's just unavoidable when you cast them to IEEE floats. If you want pure mathematical results, use a symbolic computation system; if you are trying to use IEEE floating-point to represent numbers that are within eps of 1, you are in a state of sin.
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How do I create delegates in Objective-C?
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I think you need to cast the unsigned int type to BOOL as the return value of delegate respondsToSelector is of type BOOL.
– Roland
Nov 25 '13 at 8:34
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How can I use NSError in my iPhone App?
...this is a pretty awesome answer, although there are some issues in ARC and casting the id to a BOOL. Any slight ARC compatible variation would be much appreciated.
– NSTJ
Dec 5 '12 at 17:28
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Is there a better alternative than this to 'switch on type'?
...ching-on-types
Short version: TypeSwitch is designed to prevent redundant casting and give a syntax that is similar to a normal switch/case statement. For example, here is TypeSwitch in action on a standard Windows form event
TypeSwitch.Do(
sender,
TypeSwitch.Case<Button>(() => te...
How can I get a precise time, for example in milliseconds in Objective-C?
...o 32-bit integer fields. You can use UnsignedWideToUInt64() instead of the cast if you prefer.
– Ken Thomases
Aug 24 '13 at 0:14
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What is the purpose of std::make_pair vs the constructor of std::pair?
...from making the mistake of passing types o1 or o2 that can't implicitly be cast to T1 or T2. For instance passing a negative number to an unsigned int. -Wsign-conversion -Werror will not catch this error with std::pair constructor in c++11 however it will catch the error if std::make_pair is used.
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Move an array element from one array position to another
...ve2 = function(pos1, pos2) {
// local variables
var i, tmp;
// cast input parameters to integers
pos1 = parseInt(pos1, 10);
pos2 = parseInt(pos2, 10);
// if positions are different and inside array
if (pos1 !== pos2 && 0 <= pos1 && pos1 <= this.lengt...
Null or default comparison of generic argument in C#
...ype
Console.WriteLine("test".IsDefault());
// null must be cast to a type
Console.WriteLine(((String)null).IsDefault());
}
}
// The type cannot be generic
public static class TypeHelper
{
// I made the method generic instead
public static bool IsDefault<T>(...