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What is the optimal algorithm for the game 2048?
I have recently stumbled upon the game 2048 . You merge similar tiles by moving them in any of the four directions to make "bigger" tiles. After each move, a new tile appears at random empty position with a value of either 2 or 4 . The game terminates when all the boxes are filled and there are ...
Does the 'mutable' keyword have any purpose other than allowing the variable to be modified by a con
...things captured by value are modifiable (they aren't by default):
int x = 0;
auto f1 = [=]() mutable {x = 42;}; // OK
auto f2 = [=]() {x = 42;}; // Error: a by-value capture cannot be modified in a non-mutable lambda
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Eclipse: Referencing log4j.dtd in log4j.xml
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Jack LeowJack Leow
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Removing duplicates from a list of lists
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170
>>> k = [[1, 2], [4], [5, 6, 2], [1, 2], [3], [4]]
>>> import itertools
>&g...
boost Composite keys - C/C++ - 清泛网 - 专注C/C++及内核技术
...ts of a composite key:
// try to locate streets in quadrants with x==0
// compile-time error: hashed indices do not allow such operations
std::pair<street_locator::iterator,street_locator::iterator> p=
sl.equal_range(boost::make_tuple(0));
The reason for this limitation is quite logi...
Initialization of an ArrayList in one line
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2071
Actually, probably the "best" way to initialize the ArrayList is the method you wrote, as it d...
Why does GitHub recommend HTTPS over SSH?
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203
GitHub have changed their recommendation several times (example).
It appears that they current...
FTP/SFTP access to an Amazon S3 Bucket [closed]
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103
There are three options.
You can use a native managed SFTP service recently added by Amazon ...
When should an IllegalArgumentException be thrown?
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80
The API doc for IllegalArgumentException:
Thrown to indicate that a method has been passed an i...
Getting “type or namespace name could not be found” but everything seems ok?
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Note that you can also get this error when you create a new project in VS2012 or VS2013 (which uses .Net 4.5 as the default framework) and:
the referencing project(s) use .Net 4.0 (this is common when you have migrated from VS2010 to VS2012 or VS2013 and you then add a new project)
the refere...