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Is there a range class in C++11 for use with range based for loops?
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The C++ standard library does not have one, but Boost.Range has boost::counting_range, which certainly qualifies. You could also use boost::irange, which is a bit more focused in scope.
C++20's range library will allow you to do this ...
What is meant by the term “hook” in programming?
...Would someone be able to give me an idea of what this term generally means and perhaps a small example to illustrate the definition?
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Trim spaces from start and end of string
I am trying to find a way to trim spaces from the start and end of the title string. I was using this, but it doesn't seem to be working:
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Rails params explained?
Could anyone explain params in Rails controller: where they come from, and what they are referencing?
5 Answers
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How to change UIPickerView height
... have shorter PickerViews but setting a smaller frame doesn't seem to work and the frame is locked in Interface Builder.
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Difference between no-cache and must-revalidate
...st-Modified, the agent has nothing to use to validate what it has in cache and must download the whole payload again. So when the RFC says "revalidate" that probably means, re-fetch.
– Luke Puplett
Nov 13 '13 at 11:55
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Value cannot be null. Parameter name: source
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I had this one a while back, and the answer isn't necessarily what you'd expect. This error message often crops up when your connection string is wrong.
At a guess, you'll need something like this:
<connectionStrings>
<add name="hublisherE...
Wrong Manifest.mf in IntelliJ IDEA created .jar
...ntelliJ IDEA's jar artifact but instead of my manifest.mf containing the standard
7 Answers
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Is there a way for non-root processes to bind to “privileged” ports on Linux?
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Okay, thanks to the people who pointed out the capabilities system and CAP_NET_BIND_SERVICE capability. If you have a recent kernel, it is indeed possible to use this to start a service as non-root but bind low ports. The short answer is that you do:
setcap 'cap_net_bind_service=+ep' /path/...
What is the most robust way to force a UIView to redraw?
... building my view hierarchy. the subclass in question gets passed the data and it's drawRect method now has everything it needs to render.
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