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How is “=default” different from “{}” for default constructor and destructor?
...structor, then things won't compile whether or not you destruct a Widget:
test.cpp:8:7: error: field of type 'A' has private destructor
A a_;
^
test.cpp:4:5: note: declared private here
~A();
^
1 error generated.
...
How to filter SQL results in a has-many-through relation
...l know, curiosity has a reputation for killing cats.
So, which is the fastest way to skin a cat?
The precise cat-skinning environment for this test:
PostgreSQL 9.0 on Debian Squeeze with decent RAM and settings.
6.000 students, 24.000 club memberships (data copied from a similar database with r...
Converting HTML files to PDF [closed]
...endered HTML not strict XHTML. Though this can be mitigated with automated tests or some process that involves XML validation.
– SteveT
Jun 19 '13 at 13:43
3
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How do I change the title of the “back” button on a Navigation Bar
...
Tested and verified on iOS 7 in Xcode 5.0.2. This WILL change the previous screen's title to Back when you go back to it though.
– Alex Zavatone
Jan 17 '14 at 17:54
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Offset a background image from the right using CSS
...ion: right 10px top;
As far as I know this is not supported in IE8. In latest Chrome/Firefox it works fine.
See Can I use for details on the supported browsers.
Used source: http://tanalin.com/en/blog/2011/09/css3-background-position/
Update:
This feature is now supported in all major browsers...
“CASE” statement within “WHERE” clause in SQL Server 2008
...
But it won't work the way you have written them eg:
WHERE
CASE LEN('TestPerson')
WHEN 0 THEN co.personentered = co.personentered
ELSE co.personentered LIKE '%TestPerson'
END
You may have better luck using combined OR statements like this:
WHERE (
(LEN('TestPerson')...
SQL Server Insert if not exists
...ill sometimes fail, because a second connection can pass the IF NOT EXISTS test before the first connection executes the INSERT, i.e. a race condition. See stackoverflow.com/a/3791506/1836776 for a good answer on why even wrapping in a transaction doesn't solve this.
...
Javascript swap array elements
...uch more neatly:"
[ list[x], list[y] ] = [ list[y], list[x] ];
My quick tests showed that this Pythonic code works great in the version of JavaScript
currently used in "Google Apps Script" (".gs").
Alas, further tests show this code gives a "Uncaught ReferenceError: Invalid left-hand side in assi...
Clear a terminal screen for real
...hese would behave similar on all "modern" terminal emulators. I initially tested on my MAC's terminal and it did not reset there, but it did reset on my Centos Linux.
– nhed
Mar 20 '11 at 18:14
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How to create an AVD for Android 4.0
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How many MBs of data do I need to download to test one single hello world application?
– Salman A
Apr 13 '12 at 15:20
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