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How do I check out a specific version of a submodule using 'git submodule'?
... @QZHua: I experimented with this myself and it seems that the commit ID of the submodule is preserved when the parent is cloned.
– Psychonaut
May 16 '19 at 13:46
add a c...
How does Haskell printf work?
...a where
bar :: IO () -> a
instance FooType (IO ()) where
bar = id
instance (Show x, FooType r) => FooType (x -> r) where
bar s x = bar (s >> print x)
Here, bar takes an IO action which is built up recursively until there are no more arguments, at which point we simply ...
#define macro for debug printing in C?
... notation is not supported in earlier versions). The do { ... } while (0) idiom ensures that the code acts like a statement (function call). The unconditional use of the code ensures that the compiler always checks that your debug code is valid — but the optimizer will remove the code when DEBUG...
Where can I get a list of Ansible pre-defined variables?
I see that Ansible provide some pre-defined variables that we can use in playbooks and template files. For example, the host ip address is ansible_eth0.ipv4.address. Googleing and searching the docs I cound't find a list of all available variables. Would someone list them for me?
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Use-case of `oneway void` in Objective-C?
...thout it, the caller will block, even though the method's return type is void. Obviously, it is never used with anything other than void, as doing so would mean the method returns something, but the caller doesn't get it.
For more on distributed objects, see Cocoa Conceptual DistrObjects.
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Express res.sendfile throwing forbidden error
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I believe it's because of the relative path; the "../" is considered malicious. Resolve the local path first, then call res.sendfile. You can resolve the path with path.resolve beforehand.
var path = require('path');
res.sendFile(path.resolve('temp/index.html'));
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Android equivalent to NSNotificationCenter
In the process of porting an iPhone application over to android, I am looking for the best way to communicate within the app. Intents seem to be the way to go, is this the best (only) option? NSUserDefaults seems much lighter weight than Intents do in both performance and coding.
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LoaderManager with multiple loaders: how to get the right cursorloader
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The Loader class has a method called getId(). I would hope this returns the id you've associated with the loader.
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Which mime type should I use for mp3
I'm trying to decide which mime type to choose for returning mp3 data (served up by php)
5 Answers
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How to get a user's client IP address in ASP.NET?
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As others have said you can't do what you are asking. If you describe the problem you are trying to solve maybe someone can help?
E.g.
are you trying to uniquely identify your users?
Could you use a cookie, or the session ID perhaps ins...