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Does a method's signature in Java include its return type?
...ple:
public class Foo {
public int myMethod(int param) {}
public char myMethod(int param) {}
}
No, the compiler won't know the difference, as their signature: myMethod(int param) is the same. The second line:
public char myMethod(int param) {}
will give you can error: method is al...
jQuery - getting custom attribute from selected option
...
You're adding the event handler to the <select> element.
Therefore, $(this) will be the dropdown itself, not the selected <option>.
You need to find the selected <option>, like this:
var option = $('option:selected', this).attr('mytag');
...
What is the difference between exit() and abort()?
...void)
{
cout<<"exit function 2"<<endl;
}
int main(int argc, char**argv)
{
atexit (myProgramIsTerminating1);
atexit (myProgramIsTerminating2);
//abort();
return 0;
}
Comments:
If abort is uncommented: nothing is printed and the destructor of someobject will not be called. ...
How to run a program without an operating system?
...her such weird keys after power-on until you get a boot menu where you can select to boot from the USB.
It is often possible to configure the search order in those menus.
For example, on my T430 I see the following.
After turning on, this is when I have to press Enter to enter the boot menu:
The...
How to obtain the query string from the current URL with JavaScript?
...ix it tho: replace checks the whole(!) string. we need to remove the first char. removing unnecessary loops. Result: window.location.search window.location.search.substr(1) .split("&") .reduce((acc, param) => { const [key, value] = param.split("="); return { ...
jQuery select by attribute using AND and OR operators
I'm thinking about, if it is possible in jQuery to select elements by named attributes using AND and OR.
8 Answers
...
Entity Framework DateTime and UTC
...ngth);
}
/// <inheritdoc />
public override char GetChar(int ordinal)
{
return source.GetChar(ordinal);
}
/// <inheritdoc />
public override long GetChars(int ordinal, long dataOffset, char[] buffer, int bufferOffset, ...
Select Multiple Fields from List in Linq
...
Anonymous types allow you to select arbitrary fields into data structures that are strongly typed later on in your code:
var cats = listObject
.Select(i => new { i.category_id, i.category_name })
.Distinct()
.OrderByDescending(i => i.c...
When should the volatile keyword be used in C#?
...t (40203Ch)]
00401045 call dword ptr [__imp_std::basic_ostream<char,std::char_traits<char> >::operator<< (402038h)]
}
0040104B xor eax,eax
0040104D pop ecx
0040104E ret
Looking at the output, the compiler has decided to use the ecx re...
Insert, on duplicate update in PostgreSQL?
...try the UPDATE again
END;
END LOOP;
END;
$$
LANGUAGE plpgsql;
SELECT merge_db(1, 'david');
SELECT merge_db(1, 'dennis');
There's possibly an example of how to do this in bulk, using CTEs in 9.1 and above, in the hackers mailing list:
WITH foos AS (SELECT (UNNEST(%foo[])).*)
updated...