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Why create “Implicitly Unwrapped Optionals”, since that implies you know there's a value?
...ase of an object that may have nil properties while it's being constructed and configured, but is immutable and non-nil afterwards (NSImage is often treated this way, though in its case it's still useful to mutate sometimes). Implicitly unwrapped optionals would clean up its code a good deal, with r...
How to print HTML content on click of a button, but not the page? [duplicate]
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this may destroy your animations and events that was added by js after load. Use with caution.
– Lukas Liesis
Dec 14 '15 at 16:45
7
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What is a “callable”?
...ue, yet o will still not be callable because Python skips __getattribute__ and __getattr__ for calls. The only real way left to check if something is callable is thus EAFP.
– L̲̳o̲̳̳n̲̳̳g̲̳̳p̲̳o̲̳̳k̲̳̳e̲̳̳
Jul 1 '10 at 23:03
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JSON and XML comparison [closed]
I want to know which is faster: XML and JSON?
When to use which one ?
6 Answers
6
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Maven check for updated dependencies in repository
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The Maven Versions plugin and its display-dependency-updates mojo are what you're looking for:
mvn versions:display-dependency-updates
Here is what the output looks like:
[INFO] ----------------------------------------------------------------------...
How do I put an 'if clause' in an SQL string?
...rder_status = 'COMPLETED'
WHERE purchaseOrder_ID = '@purchaseOrder_ID' and
not exists (SELECT *
FROM itemsOrdered WHERE purchaseOrder_ID = '@purchaseOrdered_ID' AND status = 'PENDING'
)
However, I might guess that you are looping at a higher...
What is the purpose of backbone.js?
I tried to understand the utility of backbone.js from its site http://documentcloud.github.com/backbone , but I still couldn't figure out much.
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Dual emission of constructor symbols
...? This class has no base. Why does it have a "complete object constructor" and a "base object constructor" for each?
This Q&A implies to me that this is simply a by-product of polymorphism support, even though it's not actually required in this case.
Note that c++filt used to include this info...
FontAwesome icons not showing. Why?
Recently I've been developing this website and I'm trying to put a font awesome icons in it, so it's scalable.
24 Answers
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What is Rack middleware?
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Rack as Design
Rack middleware is more than "a way to filter a request and response" - it's an implementation of the pipeline design pattern for web servers using Rack.
It very cleanly separates out the different stages of processing a request - separation of concerns being a key goal of all w...