#Collection

Why you need to understand garbage collection

I’vebeeninterviewinglotsofC#developersrecently,andoneofmystockquestionsis“howdoesthe.NETgarbagecollectorknowwhenyou’vefinishedusinganobject?&r...

python3之模块collections

1.计数器(counter)counter是对字典的方法,用来追踪值的出现次数;具备字典的所有功能和自己的功能。>>>fromcollectionsimportCounter>>>d2=Count>>>d2=Counter('abbcccddd')#对值计数>...
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