Programmer Think

1, Title 1.1 Title picture 1.2 Title Document #include <iostream> #include <ctime> using namespace std; //Define a type def that will be very useful when we implement our functions. typedef char* charPointer; //This type def will make cstring parameter passing by reference easy to debug //Example void foo(charPointer& x) ...

1. Array (1) When storing multiple data of the same type, you can use array, which is a reference type. Two ways to create arrays //The first creation method Use the new keyword var nameList = new Array(); //The second creation method uses [] literal. var nameList = []; (2) Data is stored by index (sequence number) in the number, and t ...

Lecture 21 functional programming imperative programming Procedural and object-oriented programming belong to the imperative programming paradigm "How to do" needs to be described in detail, including operation steps and state changes. They are consistent with von Neumann architecture. They are widely used programming paradigms a ...

When writing automation use-case code, I always write a lot of functions and have a confusing understanding of their parameters. Here's a simple summary and summary of how functions are used Function Definition def Function name(Formal parameter 1,Formal parameter 2,...): Code #If it is necessary to return a result to the caller, it ...

Title 38 For a given tuple (1, 2, 3, 4, 5, 6, 7, 8, 9, 10), write a program to print the first half value in one line and the last half value in one line. code implementation Method 1: use the loop to output the tuple data tpl = (1,2,3,4,5,6,7,8,9,10) for i in range(0,5): print(tpl[i],end= ' ') print() for i in range(5,10): print(t ...

Task 1 Can the following pattern successfully match L of type int list? If the match is not successful, indicate the type of the pattern? (assuming x is of type int) x::L successful _::_ success x::(y::L) successful (x::y)::L failed, cannot int::int [x, y] successful x::L means to append x to the list L_ Wildcards can represent any t ...

What is a function Function refers to "taking" a name for a piece of code that implements a specific function, and then executing (calling) the function through the name A function can accept zero or more arguments, or return zero or more values Functions need to be clarified 1. The function needs several key data that need to ...

Functions and modules in Python Functions are packages of code that are relatively independent and reusable. 1. Modules and functions in the standard library functionexplainabsReturns the absolute value of a number. For example, abs(-1.3) will return 1.3.binConvert an integer to a binary string starting with '0b'. For example, bin(123) will ...

In the previous study, if we need to calculate the factorial of three numbers, we need to write repeated code three times to calculate, which is very troublesome. World class programming master Mr. Martin Fowler once said:“ Code has many bad smells, and repetition is the worst! ". To write high-quality code, the first thing to so ...

preface In 2020, the sales of double 11 reached a new high, of which tmall's sales exceeded 490 billion yuan and JD's sales exceeded 270 billion yuan. At the same time, the rapid development of live e-commerce contributed a lot to the rapid growth of e-commerce sales during the double 11. In recent years, the double 11 e-commerce shoppi ...