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Programmer Puzzle: Encoding a chess board state throughout a game
...We could simply store the the text of the move here (“e4”, “Bxb5”, etc). Including a terminating byte you’re looking at about 6 bytes (48 bits) per move (worst case). That’s not particularly efficient.
The second thing to try is to store the starting location (6 bits) and end location (...
How can I make setuptools install a package that's not on PyPI?
...an old one. The Github source is setuptools-compatible, i.e. has setup.py, etc. Is there a way to make setuptools download and install the new version instead of looking for it on PyPI and installing the old one?
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When do I use a dot, arrow, or double colon to refer to members of a class in C++?
...ect a. So, primarily, a is an object and b is a member (function/ variable etc) of a.
Arrow operator is used in indirect member selection scenarios.
print(a->b)
Here, we are accessing b which is a member of the object, that is pointed to by a. It is shorthand of (*a).b and so here, a is pr...
What is the performance cost of having a virtual method in a C++ class?
...predicted. This can cause a large pipeline bubble as the processor cannot fetch any instructions until the indirect jump (the call through the function pointer) has retired and a new instruction pointer computed. So, the cost of a virtual function call is much bigger than it might seem from looking ...
Exporting functions from a DLL with dllexport
...ct not C++. C++ DLLs rely on name-mangling for all the C++isms (namespaces etc...). You can compile your code as C by going into your project settings under C/C++->Advanced, there is an option "Compile As" which corresponds to the compiler switches /TP and /TC.
If you still want to use C++ to wri...
Git vs Team Foundation Server [closed]
...hen all the commit tags change, and all metadata (code review discussions, etc.) are orphaned or need to be updated. Nevertheless, a month with TFS has persuaded me that it is not in Git's league as a version control system. Git frees the developer to be productive in ways that have to be experie...
What is the meaning of the term arena in relation to memory?
...-writing your own, namely that you don't have to write/test/debug/maintain etc. Even if you're certain with no evidence that you can improve performance by managing your own allocation, you still need good evidence before deciding that this improvement is worth the tradeoff.
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What is the difference between partitioning and bucketing a table in Hive ?
...ly correct sampling. Bucketing also aids in doing efficient map-side joins etc.
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What are Vertex Array Objects?
...er the actions you did, such as activate this attribute, bind that buffer, etc. When you call glBindVertexArray( yourVAOId ), it simply replays those attribute pointer bindings and buffer bindings.
So your next call to draw uses whatever was bound by the VAO.
VAO's don't store vertex data. No. ...
Why Qt is misusing model/view terminology?
... there is nothing wrong in defining such methods as rowCount, columnCount, etc. I think Model is some kind of wrapper for data source (no matter what is it SQL table or just an array), it provides data in standard form, and you should to define methods depends on your data source structure.
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