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'typeid' versus 'typeof' in C++
...perator which returns type identification information at run time. It basically returns a type_info object, which is equality-comparable with other type_info objects.
Note, that the only defined property of the returned type_info object has is its being equality- and non-equality-comparable, i.e. t...
Exit codes in Python
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What you're looking for in the script is calls to sys.exit(). The argument to that method is returned to the environment as the exit code.
It's fairly likely that the script is never calling the exit method, and that 0 is the default exit code.
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Difference between partition key, composite key and clustering key in Cassandra?
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Regarding confusion of which one is mandatory, which one can be skipped etc. in a query, trying to imagine Cassandra as a giant HashMap helps. So in a HashMap, you can't retrieve the values without the Key. Here, the Partition keys play the role of that key. So each query needs to have them speci...
What is the difference between Nexus and Maven?
...hese components or dependencies include libraries, frameworks, containers, etc. Maven can identify components in repositories, understand their dependencies, retrieve all that are needed for a successful build, and deploy its output back to repositories when the build is complete.
So, when you wan...
What is Normalisation (or Normalization)?
...s write table defs that include columns like DogName1, DogName2, DogName3, etc.
– Bill
Feb 20 '09 at 21:10
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What are some better ways to avoid the do-while(0); hack in C++?
...(RET(computation_result), ENSURE_SUCCESS(computation_result, return_code), etc.).
C++ offers extra tools over C:
The cleanup block functionality can be implemented as RAII, meaning you no longer need the entire cleanup block and enabling client code to add early return statements.
You throw whene...
mysql - how many columns is too many?
... if there is sensitive information in there such as SSN, credit card info, etc...
– Vandel212
Apr 3 '18 at 18:31
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Why is address zero used for the null pointer?
...; I use if (p != 0) all the time to make sure passed pointers are valid, etc.
21 Answers
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How are the points in CSS specificity calculated
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Thats because its between .o & .a .b etc So it would consider them collectively. But between an ID & a class e.g: .a and #a the ID will always overpower. It will (I assume) only count between classes when there is not a more overpowering attr. E.g class will...
jQuery: more than one handler for same event
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Both handlers will run, the jQuery event model allows multiple handlers on one element, therefore a later handler does not override an older handler.
The handlers will execute in the order in which they were bound.
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