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How is “int main(){(([](){})());}” valid C++?
...ost vexing parse disambiguation : B foo(A()) foo is a function (taking a pointer to function as only parameter and returning a B) whereas in B foo((A())) foo is a B object constructed invoking a constructor taking a A object (which instance is an anonymous temporary in this case).
...
C# generic list how to get the type of T? [duplicate]
...}
More generally, to support any IList<T>, you need to check the interfaces:
foreach (Type interfaceType in type.GetInterfaces())
{
if (interfaceType.IsGenericType &&
interfaceType.GetGenericTypeDefinition()
== typeof(IList<>))
{
Type itemType...
getViewTypeCount and getItemViewType methods of ArrayAdapter
...have pictures on the right. In that case, you would use:
@Override
public int getViewTypeCount() {
return 2;
}
@Override
public int getItemViewType(int position) {
return position % 2;
}
The framework uses your view type to decide which views to hand you via convertView in your getView m...
Generate random password string with requirements in javascript
...nerate random number, eg: 0.123456
.toString(36) // Convert to base-36 : "0.4fzyo82mvyr"
.slice(-8);// Cut off last 8 characters : "yo82mvyr"
Documentation for the Number.prototype.toString and string.prototype.slice methods.
...
Strengths of Shell Scripting compared to Python [closed]
...ntage. For example, consider resizing a directory full of images with the convert program.
– Glenn
May 1 '09 at 23:24
7
...
Constructor overloading in Java - best practice
... // do whatever with resources
}
}
From a unit testing standpoint, it'll become easy to test the class since you can put in the resources into it. If the class has many resources (or collaborators as some OO-geeks call it), consider one of these two things:
Make a parameter class
publ...
PostgreSQL Crosstab Query
... case
CREATE TABLE tbl (
section text
, status text
, ct integer -- "count" is a reserved word in standard SQL
);
INSERT INTO tbl VALUES
('A', 'Active', 1), ('A', 'Inactive', 2)
, ('B', 'Active', 4), ('B', 'Inactive', 5)
, ('C', 'Inactive', 7); -- ('C', 'A...
Sort array of objects by single key with date value
...current updated_at in ISO format. We use new Data(iso_string).getTime() to convert ISO time to Unix timestamp. A Unix timestamp is a number that we can do simple math on. We subtract the first and second timestamp the result is; if the first timestamp is bigger than the second the return number will...
Add and Remove Views in Android Dynamically?
... new button.
Control
In the Java code, you'll add and remove row views into the container dynamically, using inflate, addView, removeView, etc. There are some visibility control for better UX in the stock Android app. You need add a TextWatcher for the EditText view in each row: when the text is...
Cannot refer to a non-final variable inside an inner class defined in a different method
...s below - the following is not a correct explanation, as KeeperOfTheSoul points out.
This is why it doesn't work:
The variables lastPrice and price are local variables in the main() method. The object that you create with the anonymous class might last until after the main() method returns.
When ...