内置函数内置函数——eval、exec、compile 接下来,我们就一起来看看python里的内置函数。截止到python版本3.6.2,现在python一共为我们提供了68个内置函数。它们就是python提供给你直接可以拿来使用的所有函数。这些函数有些我们已经用过了,有些我们还没用到过,还有一些是被封印了,必须等我们学了新知识才能解开封印的。
compile time assert: #define UNIQUE(x) __unique_name##x #define STATIC_ASSERT(expr) typedef char UNIQUE(__LINE__)[(expr)?1:-1];
BOOST_STATIC_ASSERT 在boost/static_assert.hpp中定义了一个宏BOOST_STATIC_ASSERT,用于完成编译时静态检查。其实现方式了我们的第2种方式很类似,利用了模板的特化技术 #defineBOOST_STATIC_ASSERT( B ) \ typedef ::boost::static_assert_test<\ sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >)...
namespace static_assert { template <bool> struct STATIC_ASSERT_FAILURE; template <> struct STATIC_ASSERT_FAILURE<true> { enum { value = 1 }; }; } Here we defined the generic type STATIC_ASSERT_FAILURE. As you see the type is incomplete (no member definition). However we do provide ...
现实中的应用——BOOST_STATIC_ASSERT & boost::checked_delete BOOST_STATIC_ASSERT 在boost/static_assert.hpp中定义了一个宏BOOST_STATIC_ASSERT,用于完成编译时静态检查。其实现方式了我们的第2种方式很类似,利用了模板的特化技术 #defineBOOST_STATIC_ASSERT( B ) \ ...
可选参数optimize是用来指明编译器使用优化的等级;缺省值是-1,表示使用命令行参数-O中获取的优化等级为准;如果设置值为0(即是不用优化,__debug__是设置true),是没有优化;如果设置值为1,assert语句被删除,__debug__设置为false;如果设置值为2,除了设置值为1的功能之外,还会把代码里文档说明也删除掉,达到最佳...
In this article, I describe a static (that is, compile time) assert facility that supplements the classic assert and give examples on when and how to use it.Ralf HollyC - C++ Users JournalKevin S. Van Horn. Compile-time assertions in C++. C/C++ Users Journal, October 1997. URL http:...
本文主要对比手写自定义Attention操作,scaled_dot_product_attention中的SDPBackend.MATH,SDPBackend.FLASH_ATTENTION和SDPBackend.EFFICIENT_ATTENTION这四种Attention。四种Attention定义为: class CausalSelfAttention(nn.Module): def __init__(self, config): super().__init__() assert config.n_embd % config.n...
Only in this configuration, i want to compile the Uart modules to serve the XMC_ASSERT() to a uart output.To implement this solution, i add a new Build Variables "TEST_ACTIVE" Type:String Val:"0" to the TEST configuration.( -> Properties for My Project, -> C/C++ Build -> Build ...
[-Wunused-local-typedefs]sizeof_int64_is_not_sizeof_long_long);^./google/protobuf/stubs/common.h:382:11: note: in definition of macro'GOOGLE_COMPILE_ASSERT'msg[bool(expr) ? 1 : -1]^./google/protobuf/stubs/strutil.h: In function'google::protobuf::uint64 google::protobuf::strtou...