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How do I URL encode a string

I have a URL string ( NSString ) with spaces and & characters. How do I url encode the entire string (including the & ampersand character and spaces)? ...
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JavaScript implementation of Gzip [closed]

...all, fixed-size server-side cache via AJAX (think: Opensocial quotas ). I do not have control over the server. 9 Answers ...
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Animate scrollTop not working in firefox

...d some are arguably rather far-fetched. If the callback is idempotent and doesn't require a lot of computing power, firing it twice may be a complete non-issue. If multiple invocations of the callback are truly an issue, and if you want to avoid feature-detection, it might be more straight-forward ...
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What does auto&& tell us?

...iding copies) when the original initializer was a modifiable rvalue. What does this mean as to whether we can or when we can steal resources from var? Well since the auto&& will bind to anything, we cannot possibly try to rip out vars guts ourselves - it may very well be an lvalue or even c...
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What are the differences between a pointer variable and a reference variable in C++?

... Brian, the stack is not relevant. References and pointers do not have to take space on the stack. They can both be allocated on the heap. – Derek Park Sep 19 '08 at 4:33 ...
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Bash tool to get nth line from a file

Is there a "canonical" way of doing that? I've been using head -n | tail -1 which does the trick, but I've been wondering if there's a Bash tool that specifically extracts a line (or a range of lines) from a file. ...
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Creating an abstract class in Objective-C

...now works with Objective-C. I'd like to create an abstract class, but that doesn't appear to be possible in Objective-C. Is this possible? ...
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What is the pythonic way to detect the last element in a 'for' loop?

I'd like to know the best way (more compact and "pythonic" way) to do a special treatment for the last element in a for loop. There is a piece of code that should be called only between elements, being suppressed in the last one. ...
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When to choose checked and unchecked exceptions

...uage with checked exceptions), when creating your own exception class, how do you decide whether it should be checked or unchecked? ...
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What are the risks of running 'sudo pip'?

...comments or responses that state emphatically that running pip under sudo is "wrong" or "bad", but there are cases (including the way I have a bunch of tools set up) where it is either much simpler, or even necessary to run it that way. ...