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How do you append an int to a string in C++? [duplicate]
...irectly to it, as in
std::cout << text << i;
The C++ way of converting all kinds of objects to strings is through string streams. If you don't have one handy, just create one.
#include <sstream>
std::ostringstream oss;
oss << text << i;
std::cout << oss.str()...
Why covariance and contravariance do not support value type
...ntational forms, "boxed" and "unboxed". The compiler has to insert code to convert from one form to the other, even though this is normally invisible at a source code level. In effect, only the "boxed" form is considered by the underlying system to be a subtype of object, but the compiler automatica...
How to check if an object is nullable?
...se I got a boxed Nullable<T> but because I was writing a generic WPF converter base class and some properties are nullable, so I used Nullable.GetUnderlyingType to detect that case and Activator.CreateInstance to make a boxed nullable, (Convert.ChangeType doesn't handle nullables btw).
...
Accessing members of items in a JSONArray with Java
... put("b", 400);
}}
)));
//Then: convert to List<JSONObject>
List<JSONObject> jsonItems = IntStream.range(0, jsonArray.length())
.mapToObj(index -> (JSONObject) jsonArray.get(index))
.collect(Collectors.toList());
...
Use latest version of Internet Explorer in the webbrowser control
...ss Not found");
return;
}
string FindAppkey = Convert.ToString(Regkey.GetValue(appName));
// Check if key is already present
if (FindAppkey == "8000")
{
MessageBox.Show("Required Application Settings Present");
Regkey.Clos...
Can someone explain __all__ in Python?
...lias their imports, for example, in ctypes/__init__.py:
import os as _os, sys as _sys
Using the _ convention can be more elegant because it removes the redundancy of naming the names again. But it adds the redundancy for imports (if you have a lot of them) and it is easy to forget to do this cons...
How do you simulate Mouse Click in C#?
...= Cursor.Position.Y;
//move to coordinates
pt = (Point)pc.ConvertFromString(X + "," + Y);
Cursor.Position = pt;
//perform click
mouse_event(MOUSEEVENTF_LEFTDOWN, 0, 0, 0, 0);
mouse_event(MOUSEEVENTF_LEFTUP, 0, 0, 0, 0);
}
I o...
Should MySQL have its timezone set to UTC?
...column is stored as UTC but
when selecting a date MySQL will automatically convert it to the
current session timezone.
When storing a date in a timestamp, MySQL will assume that the date
is in the current session timezone and convert it to UTC for
storage.
MySQL can store partial dates in datetime ...
Java dynamic array sizes?
...ents ; i++ ) {
list.add( new xClass() );
}
// convert it to array
xClass [] array = list.toArray( new xClass[ list.size() ] );
System.out.println( "size of array = " + array.length );
}
}
class xClass {}
...
How to call C from Swift?
...wn .h header file) should contain pure Objective-C code, so you'll have to convert C++ types to Objective-C types in the implementation, to expose them to Swift. Then you can import that header with an objective-c bridging header.
– William T Froggard
Dec 6 '16...