Ray's playground

摘要：Designed for humans first and machines second, microformats are a set of simple, open data formats built upon existing and widely adopted standards. Instead of throwing away what works today, microfor... 阅读全文

摘要：Rabin–Karp string search algorithmfunction RabinKarp(string s[1..n], string sub[1..m])hsub := hash(sub[1..m]); hs := hash(s[1..m])for i from 1 to n-m+1if hs = hsubif s[i..i+m-1] = subreturn ihs ... 阅读全文

摘要：In this chapter we'll be covering: Database libraries and object-relational managers Point-and-click graphical applications CherryPy for web applications Working with XML 阅读全文

摘要：[代码] 阅读全文

摘要：stringCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1>>>template="Hello{},youarecurrently{}."2>>>print(template.format('Ray','writ... 阅读全文

摘要：flyweightCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->>>importweakref>>>classCarModel:_models=weakref.WeakValueDictionary()def__... 阅读全文

摘要：The formal definitions associated with the Big Oh notation are as follows:　　• f(n) = O(g(n)) means c · g(n) is an upper bound on f(n). Thus there existssome constant c such that f(n) is alw... 阅读全文

摘要：decoratorCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1>>>importtime2>>>deflog_calls(func):3defwrapper(*args,**kwargs):4now=time.... 阅读全文

摘要：Len　　The simplest example is the len() function. This function counts the number of items in some kind of container object such as a dictionary or list.　　Reversed　 The reversed() function takes any se... 阅读全文

摘要：codeCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1classSilly:23@property4defsilly(self):5"Thisisasillyproperty"6print("Youaregettingsilly")7returns... 阅读全文

摘要：codeCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1classBaseClass:2num_base_calls=034defcall_me(self):5print("CallingmethodonBaseClass")6self.num_ba... 阅读全文