arg function

Reprint: Http://www.cppblog.com/guijie/archive/2010/12/13/136273.aspx Argument of the Maximum/minimum arg max F (x): When f (x) takes the maximum value, the value of X Arg min f (x): When f (x) takes the minimum value, the value of X Represents

This particular definition of *arg and *kwargs in a function is used to pass an indefinite number of arguments to a function. *arg (Only one *) is used to pass the list array, while **kwargs (two *) is used to pass the Dict dictionary def

a simple function First we can set a simple function that only considers the Required_arg ( positional parameter ) within the function. def exmaple (required_arg): print Required_arg exmaple ("Hello, world!") >> Hello, world! So what happens

Solve the "QString: arg: Argument missing: Unable to parse the symbol in SSLv2_client_method" error reported by the Qt program in Linux, sslprotocolsslv2 In Linux, the Qt Program Reports "QString: arg: Argument missing: Unable to parse the symbol in

In Python, these two are mutable parameters in Python, *arg represents any number of nameless arguments, and the type Tuple;**kwargs represents the keyword argument, which is dict.#* allows you to pass in 0 or any of these parameters, which are

Function Today we used a function, looked up the manual, and gave the following instructions: Output: Word=this Word=is Word=an Word=example Word=string This function also has the function of automatic storage location, can obtain the

The main function of macros is to simplify code writing and to simplify some areas where repeated code is needed to get code that looks more elegant. However, it is not easy to use macros well. Poor macros can easily cause disastrous consequences.

http://misakamm.com/blog/209 The main function of a macro is to simplify code writing and to simplify some of the code that needs to be duplicated for more elegant looks. But it's not easy to use a macro, and it's easy to have disastrous

Obtain the total value of a field through the query. If this value is null, a default value is provided.Select nvl (sum (T. dwxhl), 1) from tb_jhde t where zydm =-1Nvl (ARG, value) indicates that if the previous Arg value is null, the returned value

Chr (), UNICHR () and Ord ()The CHR () function returns a corresponding character by using an integer (that is, 0~255) within range (256) as a parameter.UNICHR () is just like it, except that the Unicode character is returned, and the parameter