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Checking if a double (or float) is NaN in C++
... will be true only if f is NaN.
Note that, as some comments below have pointed out, not all compilers respect this when optimizing code.
For any compiler which claims to use IEEE floating point, this trick should work. But I can't guarantee that it will work in practice. Check with your compiler...
What is the difference between Step Into and Step Over in the Eclipse debugger?
...he whole flow of a Java program. What is the difference between F5 (step into) and F6 (step over) in eclipse?
5 Answers...
What's the pythonic way to use getters and setters?
... @property
def x(self):
"""I'm the 'x' property."""
print("getter of x called")
return self._x
@x.setter
def x(self, value):
print("setter of x called")
self._x = value
@x.deleter
def x(self):
print("deleter of x called")
...
Is gettimeofday() guaranteed to be of microsecond resolution?
...the CPU speed from /proc/cpuinfo and divide to get the number of seconds. Converting this to a double is quite handy.
When I run this on my box, I get
11867927879484732
11867927879692217
it took this long to call printf: 207485
Here's the Intel developer's guide that gives tons of detail.
#in...
How do I use a custom deleter with a std::unique_ptr member?
...) = default;
template <class U, class = std::enable_if_t<std::is_convertible<U*, Bar*>()>>
constexpr default_delete(default_delete<U>) noexcept {}
void operator()(Bar* p) const noexcept { destroy(p); }
};
And maybe also do std::make_unique():
template <>
...
How are the points in CSS specificity calculated
... better grasp at Math than me could explain th numbering system and how to convert it to decimal when the individual elements are larger than 9.
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Can I simultaneously declare and assign a variable in VBA?
I'm new to VBA and want to know if I can convert the following declaration and assignment into one line:
5 Answers
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Use StringFormat to add a string to a WPF XAML binding
...y worried about internationalization, you'd probably be better off using a converter so the order of the number and units isn't fixed. <Run Text="{x:Static s:UIStrings.General_FahrenheitAbbreviation}" />
– Matt Becker
Nov 10 '15 at 15:19
...
LINQ to read XML
...sole.WriteLine(GetOutline(0, rootElement));
}
private string GetOutline(int indentLevel, XElement element)
{
StringBuilder result = new StringBuilder();
if (element.Attribute("name") != null)
{
result = result.AppendLine(new string(' ', indentLevel * 2) + element.Attribute("n...
Inheritance vs. Aggregation [closed]
...e point in the future.
Another thing I've found is that it's very hard to convert from inheritance to aggregation once there's a lot of code written around an inheritance hierarchy. Just switching from a superclass to an interface means changing nearly every subclass in the system.
And, as I menti...