/* current_exception */ exception_ptr current_exception() noexcept; 返回指向当前异常(或其副本)的智能指针[具体返回对象本身还是副本,是由具体实现库决定的],如果当前没有异常发生,那么返回一个null-pointer.exception_ptr是一种shared smart pointer类型:只要仍然有一个exception_ptr指向它,那么被指向的exception对象必须保持有效状态,因此,可以利用exception_p…

(*********************************************************************************) (* *) (* Below is the list of support classes that can be used from within the Pascal *) (* script. There are also three support objects available: MainForm of type *…

Python programs are executed by an interpreter. When you use Python interactively, the special variable _ holds the result of the last operation. Python is a dynamically typed language where variable names are bound to different values, possibly of v…

2. Built-in Functions https://docs.python.org/3.4/library/functions.html?highlight=file The Python interpreter has a number of functions and types built into it that are always available. They are listed here in alphabetical order.     Built-in Funct…

转自:https://gcc.gnu.org/onlinedocs/gcc-4.0.0/gcc/Function-Attributes.html 5.24 Declaring Attributes of Functions In GNU C, you declare certain things about functions called in your program which help the compiler optimize function calls and check your…

Small The first rule of functions is that they should be small.The second rule of functions is that they should be smaller than that.Functions should hardly ever be 20 lines long. Blocks and indenting This implies that the blocks within if statements…

The default error handling in PHP is very simple.An error message with filename, line number and a message describing the error is sent to the browser. PHP has different error handling methods: Simple "die()" statements Custom errors and error t…

16.1 TimeAs another example of a user-defined type, we’ll define a class called Time that records the time of day. The class definition looks like this: class Time(object): """Represents the time of day. attributes: hour, minute, second &qu…

3.1 Function callsIn the context of programming, a function is a named sequence of statements that performs a computation. When you define a function, you specify the name and the sequence of statements. Later, you can “call” the function by name. We…

#include <exception> Typedefs exception_ptr 一种类型,描述了一个指向异常的指针 terminate_handler 一种类型,描述了一个适合作为terminate_handler的函数的指针 unexperted_handler 一种类型,描述了一个适合作为unexpected_handler的函数的指针 Functions current_exception 获得当前异常的指针 get_terminate 获得当前terminate_handler…