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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 ...
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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Tracing XML request/responses with JAX-WS
...(smc);
return true;
}
// nothing to clean up
public void close(MessageContext messageContext) {
}
/*
* Check the MESSAGE_OUTBOUND_PROPERTY in the context
* to see if this is an outgoing or incoming message.
* Write a brief message to the print stream and
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Making custom right-click context menus for my web-app
...t that have custom drop down menus when you right-click. Somehow they override the browser's behavior of drop-down menu, and I'm now sure exactly how they do it. I found a jQuery plugin that does this, but I'm still curious about a few things:
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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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How to design a product table for many kinds of product where each product has many parameters
...table that pivots attributes to rows, instead of columns. EAV is not a valid design with respect to the relational paradigm, but many people use it anyway. This is the "Properties Pattern" mentioned by another answer. See other questions with the eav tag on StackOverflow for some of the pitfalls...
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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