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How to disallow temporaries
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@Mikhail the order of destruction of temporary objects that are destroyed at the same points is the reverse order of their construction. The default argument that the caller passes is a temporary. If the Foo object is a temporary too, and...
How to get the ThreadPoolExecutor to increase threads to max before queueing?
... task into the queue to be processed by the first available thread in FIFO order.
Although in my example code above, the queue is unbounded, you could also define it as a bounded queue. For example, if you add a capacity of 1000 to the LinkedBlockingQueue then it will:
scale the threads up to ...
I forgot the password I entered during postgres installation
...s to keep around
cp pg_hba.conf-backup pg_hba.conf
restart the server, in order to run with the safe pg_hba.conf
sudo /etc/init.d/postgresql restart
Further Reading about that pg_hba file: http://www.postgresql.org/docs/9.1/static/auth-pg-hba-conf.html
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How do I compare two strings in Perl?
...between its arguments. ...
lt, le, ge, gt and cmp use the collation (sort) order specified by the current locale if a legacy use locale (but not use locale ':not_characters') is in effect. See perllocale. Do not mix these with Unicode, only with legacy binary encodings. The standard Unicode::Collate...
How do I simulate a low bandwidth, high latency environment?
I need to simulate a low bandwidth, high latency connection to a server in order to emulate the conditions of a VPN at a remote site. The bandwidth and latency should be tweakable so I can discover the best combination in order to run our software package.
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Why would an Enum implement an Interface?
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@AKh it compares the ordinals, meaning the natural ordering is the order the enum constants are in the source file.
– Jorn
Aug 21 '12 at 21:43
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What is the purpose of the “role” attribute in HTML?
... also see it as being useful for embedded browsers and screen scrapers. In order to be useful to the unusual HTML client, the attribute needs to be set to one of the roles from the spec I linked. If you make up your own, this 'future' functionality can't work - a comment would be better.
Practical...
How do you serve a file for download with AngularJS or Javascript?
...scope.url = (window.URL || window.webkitURL).createObjectURL( blob );
in order to enable the URL:
app = angular.module(...);
app.config(['$compileProvider',
function ($compileProvider) {
$compileProvider.aHrefSanitizationWhitelist(/^\s*(https?|ftp|mailto|tel|file|blob):/);
}]);
Plea...
Saving changes after table edit in SQL Server Management Studio
... happens because sometimes it is necessary to drop and recreate a table in order to change something. This can take a while, since all data must be copied to a temp table and then re-inserted in the new table. Since SQL Server by default doesn't trust you, you need to say "OK, I know what I'm doing,...
Why doesn't the height of a container element increase if it contains floated elements?
...k -->
<div style="clear: both;"></div>
<!-- Now in order to prevent the next div from floating beside the top ones,
we use `clear: both;`. This is like a wall, so now none of the div's
will be floated after this point. The container height will now also includ...