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Compelling examples of custom C++ allocators?
What are some really good reasons to ditch std::allocator in favor of a custom solution? Have you run across any situations where it was absolutely necessary for correctness, performance, scalability, etc? Any really clever examples?
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What are namespaces?
...Namespacing does for functions and classes what scope does for variables. It allows you to use the same function or class name in different parts of the same program without causing a name collision.
In simple terms, think of a namespace as a person's surname. If there are two people named "John"...
When NOT to use yield (return) [duplicate]
There are several useful questions here on SO about the benefits of yield return . For example,
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Converting from longitude\latitude to Cartesian coordinates
I have some earth-centered coordinate points given as latitude and longitude ( WGS-84 ).
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Generate an integer that is not among four billion given ones
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Assuming that "integer" means 32 bits: 10 MB of space is more than enough for you to count how many numbers there are in the input file with any given 16-bit prefix, for all possible 16-bit prefixes in one pass through the input file. At least one of the buck...
Rethrowing exceptions in Java without losing the stack trace
...w the exception you've caught (obviously the surrounding method has to permit this via its signature etc.). The exception will maintain the original stack trace.
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How to check if variable is string with python 2 and 3 compatibility
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If you're writing 2.x-and-3.x-compatible code, you'll probably want to use six:
from six import string_types
isinstance(s, string_types)
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How to display loading message when an iFrame is loading?
I have an iframe that loads a third party website which is extremely slow to load.
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How do I format XML in Notepad++?
...have Notepad++ and I got some XML code which is very long. When I pasted it in Notepad++ there was a long line of code (difficult to read and work with).
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Determine whether JSON is a JSONObject or JSONArray
I am going to receive either a JSON Object or Array from server, but I have no idea which it will be. I need to work with the JSON, but to do so, I need to know if it is an Object or an Array.
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