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How is a CRC32 checksum calculated?

... 1100001010 = Quotient (nobody cares about the quotient) _______________ 10011 ) 11010110110000 = Augmented message (1101011011 + 0000) =Poly 10011,,.,,.... -----,,.,,.... 10011,.,,.... 10011,.,,.... -----,.,,.... 00001.,,.... ...
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Determine if variable is defined in Python [duplicate]

...() if you want to be pedantic, you can check the builtins too 'a' in vars(__builtins__) share | improve this answer | follow | ...
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What is an 'endpoint' in Flask?

...c view is defined like this: @app.route('/greeting/<name>') def give_greeting(name): return 'Hello, {0}!'.format(name) Note that the function you referred to (add_url_rule) achieves the same goal, just without using the decorator notation. Therefore, the following is the same: # No "ro...
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Git Symlinks in Windows

... on Windows git config --global alias.add-symlink '!'"$(cat <<'ETX' __git_add_symlink() { if [ $# -ne 2 ] || [ "$1" = "-h" ]; then printf '%b\n' \ 'usage: git add-symlink <source_file_or_dir> <target_symlink>\n' \ 'Create a symlink in a git repository on a Wi...
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Test if a variable is a list or tuple

... How about: hasattr(a, "__iter__") ? It tells if the object returned can be iterated over as a generator. By default, tuples and lists can, but not the string types. share...
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while (1) vs. while(True) — Why is there a difference (in python 2 bytecode)?

...oes. Here's 2.7: >>> dis.dis('True == 1') 1 0 LOAD_GLOBAL 0 (True) 3 LOAD_CONST 1 (1) 6 COMPARE_OP 2 (==) 9 RETURN_VALUE >>> dis.dis('True == 1') 1 0 LOAD_GLOBAL ...
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VS2005中SetUnhandledExceptionFilter函数应用 - C/C++ - 清泛网 - 专注C/C++及内核技术

...在以下三种情况出现。 (1)调用abort函数,并且设置了_CALL_REPORTFAULT选项(这个选项在Release版本是默认设置的)。 (2)启用了运行时安全检查选项,并且在软件运行时检查出安全性错误,例如出现缓存溢出。(安全检查选项 ...
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std::find,std::find_if使用小结 - C/C++ - 清泛网 - 专注C/C++及内核技术

std::find,std::find_if使用小结STL的find,find_if函数提供了一种对数组、STL容器进行查找的方法。使用该函数,需 #include <algorithm>我们查找一个list中的数据,通常...STL的find,find_if函数提供了一种对数组、STL容器进行查找的方法。使...
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领域驱动设计系列(三):事件驱动上 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...ce emailService, IEquipmentRepository equipmentRepository) { _emailService = emailService; _equipmentRepository = equipmentRepository; } 为何用事件? SRP (单一职责) 比如我们一个会议室预定系统,我们的一个设备坏了。我们需要通知...
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【phpcms v9】html静态化设置及URL规则优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...成: {$categorydir}{$catdir}/index.html|{$categorydir}{$catdir}/index_{$page}.html 按照栏目index页面生成,栏目列表变成:index.html、index_2.html、index_3.html……这样比较明朗。 如果要自定义生成到某一个固定的目录,可以在前面添加一个特...