Tutorial by Topics: k

SKScene represents a single scene in a SpriteKit application. An SKScene is 'presented' into an SKView. SKSpriteNodes are added to the scene to implement the actual sprites. Simple applications may have a single SKScene that contains all the SpriteKit content. More complex apps may have several S...
Primary keys are used to uniquely identify a record in a table. A table may only have a single primary key (though the primary key can consist of multiple columns), and a primary key is required for certain types of replication. Primary keys are often used as (but don't have to be) the clustered ...
By default, C compilers lay out structures so that each member can be accessed fast, without incurring penalties for 'unaligned access, a problem with RISC machines such as the DEC Alpha, and some ARM CPUs. Depending on the CPU architecture and the compiler, a structure may occupy more space in mem...
Flask-SQLAlchemy adds some additional functionality such as automatic destruction of the session assuming some things for you which are very often not what you need.

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