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Difference between dispatch_async and dispatch_sync on serial queue?
... finished whereas dispatch_async return after it is added to the queue and may not finished.
for this code
dispatch_async(_serialQueue, ^{ printf("1"); });
printf("2");
dispatch_async(_serialQueue, ^{ printf("3"); });
printf("4");
It may print 2413 or 2143 or 1234 but 1 always before 3
for this...
Rails respond_with: how does it work?
I've been reading here and there about how cool the respond_with method is in Rails 3. But I can't even find a reference to it in either the Rails APIs or by searching the source. Can anyone either explain to me how it works (what options you can use, etc) or point me to the place it's actually im...
What is the point of Lookup?
The MSDN explains Lookup like this:
5 Answers
5
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What are Transient and Volatile Modifiers?
Can someone explain what the transient and volatile modifiers mean in Java?
4 Answers
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Differences between std::make_unique and std::unique_ptr with new
Does std::make_unique have any efficiency benefits like std::make_shared ?
4 Answers
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Do I need a content-type header for HTTP GET requests?
...
According to the RFC 7231 section 3.1.5.5:
A sender that generates a message containing a payload body SHOULD generate a Content-Type header field in that message unless the intended media type of the enclosed representation is unknown to the sender. If a Content-Type header field is not prese...
What is the purpose of `text=auto` in `.gitattributes` file?
Mostly .gitattributes file has * text=auto . What is the purpose of text=auto in that file?
3 Answers
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asp.net mvc put controllers into a separate project
I'm just learning asp.net mvc and I'm trying to figure out how to move my controllers into a separate project. Typically when I have designed asp.net web apps before, I created one project for my models, another for my logic, and then there was the web.
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Does List guarantee insertion order?
...tee ordering - things will be retained in the list in the order you add them, including duplicates, unless you explicitly sort the list.
According to MSDN:
...List "Represents a strongly typed list of objects that can be
accessed by index."
The index values must remain reliable for this to ...
How do I specify multiple targets in my podfile for my Xcode project?
I'm using CocoaPods with my Xcode 4 project and I have three targets for my project (the default, one for building a lite version and one for building a demo version). All the targets use the same libraries, but CocoaPods is only adding the static library and search paths to the primary target. My p...