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Rails :dependent => :destroy VS :dependent => :delete_all
...n specify the :dependent option, which can take one of the following three forms:
:destroy/:destroy_all The associated objects are destroyed alongside this object by calling their destroy method
:delete/:delete_all All associated objects are destroyed immediately without calling their :destroy met...
Event handling for iOS - how hitTest:withEvent: and pointInside:withEvent: are related?
...which order.
– MHC
Feb 10 '11 at 20:01
shouldn't step 3 where you mention "If the return is YES, it sends hitTest:with...
Does constexpr imply inline?
...
@Eponymous yes but only the most-reduced form will remain as opcodes though. e.g: the bound checks, will be evaluated at build time, since their code path is const. But the returned value will be *(data+offset)
– v.oddou
Apr 16...
How to prevent gcc optimizing some statements in C?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
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Correct use of Multimapping in Dapper
... what object. And you can easily expand this. Need address and country information?
select
p.*,
c.CustomerID AS Id,
c.*,
address.AddressID AS Id,
address.*,
country.CountryID AS Id,
country.*
Best of all, you're clearly showing in a minimal amount of sql which columns are associated with whi...
Rails: how do I validate that something is a boolean?
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Shorter form validates :field, inclusion: [true, false]
– barelyknown
Jun 29 '13 at 13:33
9
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When and why should I use fragments in Android applications? [duplicate]
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So, using fragments for a search form which is visible in more than one activities is recommended?
– Muatik
Aug 15 '14 at 8:35
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RabbitMQ message size and types
...d a reference to a file or DB.
You might also want to read up on their performance measures:
http://www.rabbitmq.com/blog/2012/04/17/rabbitmq-performance-measurements-part-1/
http://www.rabbitmq.com/blog/2012/04/25/rabbitmq-performance-measurements-part-2/
Queues are pretty light weight, you will m...
HTML tag want to add both href and onclick working
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answered Feb 14 '13 at 4:01
IanIan
44.7k1111 gold badges9191 silver badges105105 bronze badges
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Using vagrant to run virtual machines with desktop environment
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Here's Air's excellent answer in the form of a Vagrantfile
Vagrant.configure(2) do |config|
# Ubuntu 15.10
config.vm.box = "ubuntu/wily64"
config.vm.provider "virtualbox" do |vb|
# Display the VirtualBox GUI when booting the machine
vb.gui = true...