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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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Why dict.get(key) instead of dict[key]?
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It allows you to provide a default value if the key is missing:
dictionary.get("bogus", default_value)
returns default_value (whatever you choose it to be), whereas
dictionary["bogus"]
would raise a KeyError.
If omit...
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.
9 Answers
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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 ).
9 Answers
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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...
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"...
Debugging JavaScript in IE7
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edited Jan 20 '14 at 10:16
Simon
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When NOT to use yield (return) [duplicate]
There are several useful questions here on SO about the benefits of yield return . For example,
11 Answers
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How to remove a key from a Python dictionary?
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To delete a key regardless of whether it is in the dictionary, use the two-argument form of dict.pop():
my_dict.pop('key', None)
This will return my_dict[key] if key exists in the dictionary, and None otherwise. If the second parameter is not specified (ie. my...
What is the difference between Java RMI and RPC?
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RPC is C based, and as such it has structured programming semantics, on the other side, RMI is a Java based technology and it's object oriented.
With RPC you can just call remote functions exported into a server, in RMI you can have references to remot...