大约有 2,670 项符合查询结果（耗时：0.0121秒） [XML]
Is PowerShell ready to replace my Cygwin shell on Windows? [closed]
...t when you want a property, you ask for it - you don't have to parse,guess,cast. I did not understand your point about "what happens when objects don't have compatible methods" - Could you say that another way or give an example of the problem? Thanks.
– Jeffrey Snover - MSFT
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In C#, why is String a reference type that behaves like a value type?
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Not only strings are immutable reference types.
Multi-cast delegates too.
That is why it is safe to write
protected void OnMyEventHandler()
{
delegate handler = this.MyEventHandler;
if (null != handler)
{
handler(this, new EventArgs());
}
}
I suppo...
What exactly do “IB” and “UB” mean?
...by the compiler writers. An example of this is the result of a reinterpret_cast. usually, it simply changes the type of a pointer, without modifying the address, but the mapping is actually implementation-defined, so a compiler could map to a completely different address, as long as it documented th...
Is there a wikipedia API just for retrieve content summary?
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@LaurynasG You can cast the object to an array and then grab it like this: $extract = current((array)$json_query->query->pages)->extract
– MarcGuay
Mar 15 '16 at 21:57
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Why does an overridden function in the derived class hide other overloads of the base class?
... interface. So maybe d->foo() won't get you the "Is-a Base", but static_cast<Base*>(d)->foo() will, including dynamic dispatch.
– Kerrek SB
Jan 9 '14 at 13:36
12
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Is there a constraint that restricts my generic method to numeric types?
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Use decimal for everything and cast back to the type you need.
– jjxtra
Jul 22 at 20:41
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What is a NullReferenceException, and how do I fix it?
...design philosophy, would at least resolve the NullReferenceException here.
Cast with as
var myThing = someObject as Thing;
This doesn't throw an InvalidCastException but returns a null when the cast fails (and when someObject is itself null). So be aware of that.
LINQ FirstOrDefault() and SingleOrD...
How to iterate over rows in a DataFrame in Pandas
...'B'], ...) instead of df[['A', 'B']].to_numpy() as the latter implicitly upcasts data to the most common type. As an example if A is numeric and B is string, to_numpy() will cast the entire array to string, which may not be what you want. Fortunately zipping your columns together is the most straigh...
C pointers : pointing to an array of fixed size
...ill, nothing prevents you or an incompetent or malevolent coder from using casts to fool the compiler into treating your struct as one of a different size. The almost unshackled ability to do this kind of thing is a part of C's design.
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How to correctly implement custom iterators and const_iterators?
...fining a copy constructor that is template, it won't compile if you try to cast the underlying type from const to non-const.
– Matthieu M.
Aug 27 '10 at 9:48
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