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What is the difference between association, aggregation and composition?
...ect. It is valid UML to have shared aggregation, i.e. a child belongs to multiple parents. You acknowledge this in your example about Department as an aggregation of Professors, because you say that a Professor can work for more than one Department.
– www.admiraalit.nl
...
Is functional GUI programming possible? [closed]
...rld functional GUI toolkit :-)
WPF describes the User interface in XAML (although you can rewrite it to functionally looking C# or F# too), so to create some user interface you would write:
<!-- Declarative user interface in WPF and XAML -->
<Canvas Background="Black">
<Ellipse ...
is_null($x) vs $x === null in PHP [duplicate]
... between using === and is_null(). Did some quick testing and got these results:
<?php
//checking with ===
$a = array();
$time = microtime(true);
for($i=0;$i<10000;$i++) {
if($a[$i] === null) {
//do nothing
}
}
echo 'Testing with === ', microtime(true) - $time, "\n";
//check...
Update data in ListFragment as part of ViewPager
...
public class MPagerAdapter extends FragmentPagerAdapter {
private Map<Integer, String> mFragmentTags;
private FragmentManager mFragmentManager;
public MPagerAdapter(FragmentManager fm) {
super(fm);
mFragmentManager = fm;
mFragmentTags = new HashMap<Inte...
What do I use for a max-heap implementation in Python?
... I'm amazed that this is not provided by heapq, and that there is no good alternative.
– ire_and_curses
Jun 10 '10 at 17:46
24
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Get the last non-empty cell in a column in Google Sheets
...:
The function to find the last populated cell in a column is:
=INDEX( FILTER( A:A ; NOT( ISBLANK( A:A ) ) ) ; ROWS( FILTER( A:A ; NOT( ISBLANK( A:A ) ) ) ) )
So if you combine it with your current function it would look like this:
=DAYS360(A2,INDEX( FILTER( A:A ; NOT( ISBLANK( A:A ) ) ) ; ROWS...
How to convert an int to a hex string?
...ing containing an integer as hex. If that is what you want, use the hex builtin.
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Can Rails Routing Helpers (i.e. mymodel_path(model)) be Used in Models?
...et it once in your environment config files: Rails.application.routes.default_url_options[:host] = 'localhost:3000'
– Andrew
Feb 18 '14 at 0:12
5
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CSS text-overflow: ellipsis; not working?
...h setting, but because the element is set to display:inline (i.e. the default) it is ignoring it, and nothing else is constraining its width either.
You can fix this by doing one of the following:
Set the element to display:inline-block or display:block (probably the former, but depends on your l...
In what cases will HTTP_REFERER be empty
...
By default, switching from an HTTPS URL to a different HTTPS URL does set the full referer. This default policy can however be overridden. w3.org/TR/referrer-policy
– Dhaval Kapil
Feb 3 '17 at 1...