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How to calculate a time difference in C++
...ow(); }
double elapsed() const {
return std::chrono::duration_cast<second_>
(clock_::now() - beg_).count(); }
private:
typedef std::chrono::high_resolution_clock clock_;
typedef std::chrono::duration<double, std::ratio<1> > second_;
std::chrono...
Compiler Ambiguous invocation error - anonymous method and method group with Func or Action
...exactly the situation we are in here.
Moving on:
A single method M is selected corresponding to a method invocation of the form E(A) [...] The argument list A is a list of expressions, each classified as a variable [...] of the corresponding parameter in the formal-parameter-list of D.
OK. So...
In Objective-C, what is the equivalent of Java's “instanceof” keyword?
I would like to check whether an object (e.g. someObject ) is assignable (cast-able) to a variable of another type (e.g. SpecifiedType ). In Java, I can write:
...
How are booleans formatted in Strings in Python?
...to actually format the string (e.g. add white space), you encounter Python casting the boolean into the underlying C value (i.e. an int), e.g.
>>> "{:<8} {}".format(True, False)
'1 False'
To get around this you can cast True as a string, e.g.
>>> "{:<8} {}".format...
How to access session variables from any class in ASP.NET?
...
This approach has several advantages:
it saves you from a lot of type-casting
you don't have to use hard-coded session keys throughout your application (e.g. Session["loginId"]
you can document your session items by adding XML doc comments on the properties of MySession
you can initialize your ...
Best way to read a large file into a byte array in C#?
...
I would make sure to wrap the long to int cast with the checked construct like this: checked((int)fs.Length)
– tzup
Jun 20 '14 at 9:09
...
Associating enums with strings in C#
...verriding the ToString method to return Value. And then provided implicit cast operators to and from a string. public static implicit operator String(LogCategory category) { return Value; }.
– Zarepheth
Jan 24 '14 at 20:17
...
Why are Subjects not recommended in .NET Reactive Extensions?
...ach, or for simple cases, you could use something like Observable.Interval.Select(_ => <db fetch>). You may want to use DistinctUntilChanged() to prevent publishing updates when nothing has changed in the source data.
The source of data is some kind of asynchronous api that calls your callb...
What is the right way to check for a null string in Objective-C?
...stinct Objective-C types 'struct NSNull *' and 'struct NSString *' lacks a cast Is there any way of removing this (I dunno if things have changed since this question was asked)?
– thebossman
Dec 2 '10 at 1:40
...
Hidden Features of JavaScript? [closed]
...amic typing may continue to use == for situations where we know we want to cast, as in 0 == '' or 0 == '0'.
– thomasrutter
Apr 1 '09 at 5:15
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