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C++ template constructor
...ame T> C(T*);
};
template <typename T> T* UseType()
{
static_cast<T*>(nullptr);
}
Then to create an object of type C using int as the template parameter to the constructor:
C obj(UseType<int>());
Since you can't pass template parameters to a constructor, this solution ...
hasNext in Python iterators?
...ss of the Python community is staggering.
– Jonathan Cast
Aug 21 '17 at 13:48
nice answer, I'm copying this for ilustr...
How can I find the last element in a List?
...e>, Count and Contains are optimised for ICollection<TSource> and Cast<TResult> is optimised for IEnumerable<TResult>.
– chillitom
Dec 4 '13 at 17:52
9
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How can I multiply all items in a list together with Python?
...Convenient if you're already using Numpy. You probably don't even need to cast it as a list first, this should work for most cases result = np.prod(mylist)
– Nick
Jun 9 '16 at 23:47
...
Query an XDocument for elements by name at any depth
...ement> mails = ((IEnumerable)doc.XPathEvaluate("/emails/emailAddress")).Cast<XElement>();
Note that
var res = doc.XPathEvaluate("/emails/emailAddress");
results either a null pointer, or no results.
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Why isn't the size of an array parameter the same as within main?
...eturns an object of type size_t, so you should print it with %zu (C99), or cast it to int if you use %d like above in your printf calls.
– Alok Singhal
Dec 29 '09 at 15:41
4
...
How can I inject a property value into a Spring Bean which was configured using annotations?
... </property>
</bean>
When retrieved, this bean can be cast to a java.util.Properties which will contain a property named results.max whose value is read from app.properties. Again, this bean can be dependency injected (as an instance of java.util.Properties) into any class via t...
Are there strongly-typed collections in Objective-C?
... philosophy - for example if you pull the first item out of an NSArray and cast it to an NSNumber but that item was really an NSString, you are screwed...
– jjxtra
Jan 19 '12 at 20:27
...
How to convert enum value to int?
... White,
Green,
Blue,
Purple,
Orange,
Red
}
then:
//cast enum to int
int color = Color.Blue.ordinal();
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What is the best way to test for an empty string in Go?
...t that little extra bit of work. HOWEVER, one thing we used to do in C was cast the left side to a const or put the static string on the left side of the operator to prevent s=="" from becoming s="" which in the C syntax is acceptable... and probably golang too. (see the extended if)
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