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getActivity() returns null in Fragment function
...ity is a context so if you can simply check the context is an Activity and cast it if necessary.
@Override
public void onAttach(Context context) {
super.onAttach(context);
Activity a;
if (context instanceof Activity){
a=(Activity) context;
}
}
...
How to suppress GCC warnings from library headers?
...hpp>
#include <boost/uuid/uuid_io.hpp>
#include <boost/lexical_cast.hpp>
// turn the warnings back on
#pragma GCC diagnostic pop
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How do I group Windows Form radio buttons?
... control, Type type)
{
var controls = control.Controls.Cast<Control>();
return controls.SelectMany(ctrl => GetAll(ctrl, type))
.Concat(controls)
.Where(c => c.GetType() == type);
...
Automating the InvokeRequired code pattern
... {
action(obj);
}
}
The template allows for flexible and cast-less code which is much more readable while the dedicated delegate provides efficiency.
progressBar1.InvokeIfRequired(o =>
{
o.Style = ProgressBarStyle.Marquee;
o.MarqueeAnimationSpeed = 40;
});
...
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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Pandas convert dataframe to array of tuples
...
This can cast values to a different type though, right?
– AMC
Jan 7 at 17:58
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...
Converting String to Int with Swift
...
@aremvee do you mean "cast" an integer as a string? And what exactly does this do that answers the question which the other answers don't?
– Alex Hall
Jul 3 '17 at 21:46
...
How to avoid the “divide by zero” error in SQL?
...of the first argument. This altered example works fine: SELECT 1 / NULLIF(CAST(NULL AS INT), 0). In real life, you are going to supply a table column to NULLIF() rather than a NULL constant. Since table columns have known datatypes, this also works fine: SELECT 1 / NULLIF(SomeNullableColumn, 0) F...
Read-only list or unmodifiable list in .NET 4.0
... If you expose your List as an IEnumerable, then the consumer could simply cast it back to List and modify it.
– JulianR
Jun 11 '09 at 22:36
4
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How to sort by two fields in Java?
... You can also add a type parameter to Comparator to avoid having to cast the inputs.
– biziclop
Jan 26 '11 at 14:36
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