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Why are Objective-C delegates usually given the property assign instead of retain?
...wner
If B had retained A, A wouldn't be released, as B owns A, thus A's dealloc would never get called, causing both A and B to leak.
You shouldn't worry about A going away because it owns B and thus gets rid of it in dealloc.
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How to throw a C++ exception
...argument& e ) {
// do something
// let someone higher up the call stack handle it if they want
throw;
}
And to catch exceptions regardless of type:
catch( ... ) { };
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Multiple file upload in php
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I'm not sure <input type="file"> allows the attribute multiple - what would the expected outcome be? Browser allowing multiple files to be selected?
– Sven
Oct 3 '12 at 17:41
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What are some good Python ORM solutions? [closed]
I'm evaluating and looking at using CherryPy for a project that's basically a JavaScript front-end from the client-side (browser) that talks to a Python web service on the back-end. So, I really need something fast and lightweight on the back-end that I can implement using Python that then speaks to...
HTTP status code for a partial successful request
...s to users. In a post request a XML string is transferred that consists of all the users that should receive that particular message. If any of the users in the list do not exist I give the list of missing users back to the client for further evaluation.
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npm windows install globally results in npm ERR! extraneous
... be good to share the site.
So far so good, til it comes to the global installing. (Ok, some errors I had to figure out, but now I have working npm).
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nServiceBus vs Mass Transit vs Rhino Service Bus vs other?
...other alternative like ActiveMQ. MSMQ has the benefit of already being installed on all Windows machines, as opposed to Service Broker which isn't.
In terms of choosing between NServiceBus, Mass Transit, and Rhino Service Bus - this Stackoverflow answer comparing NServiceBus to MassTransit would be...
CSS filter: make color image with transparency white
...jP.gif" class="filter" />
</p>
First, brightness(0) makes all image black, except transparent parts, which remain transparent.
Then, invert(1) makes the black parts white.
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Converting file size in bytes to human-readable string
...he other hand, hard disk manufacturers like to use decimal, so they would call it ~1.6GB.
And just to be confusing, floppy disks use a mixture of the two systems - their 1MB is actually 1024000 bytes.
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scp (secure copy) to ec2 instance without password
I have an EC2 instance running (FreeBSD 9 AMI ami-8cce3fe5), and I can ssh into it using my amazon-created key file without password prompt, no problem.
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