Programmer Think

There are so many card pullers playing. I have come to write a card puller simulator. There are six card classes: s s s, ss, s, a, b, c. the probability of sss is 0.01%, ss probability is 0.1%, s probability is 1%, a probability is 15%, b probability is 30%, and the rest is c. in order to avoid staying in Africa for a long time ...

The principle will not be introduced. You can see another one of mine Deeply understand the operation principle of blockchain through an App Demo demonstration The code is only the simplest. It simply implements the definition of a block and the connection between blocks. There is no p2p, incentive or consensus. Important da ...

1. Make your own tomato clock On a PC I've been using "Little Tomato" as my tomato clock software, and I turn it on and maximize it on my secondary monitor so that not only does it do its part, but I can also tell my colleague that I'm working hard.But I always wanted to write a tomato clock software by myself. It was so itchy that I ...

How to use Assert (or other Test classes?) To verify that an exception was thrown? #1st floor Well, I can almost sum up what everyone else said before... Anyway, here is the code I built based on the good answer:) the rest is to copy and use /// <summary> /// Checks to make sure that the input delegate throws a exception of type T ...

drf serialization component Basic use urls.py from django.urls import re_path urlpatterns = [ re_path(r'books/$', views.BookView.as_view()), re_path(r'books/(?P<pk>\d+)/$', views.BookFilterView.as_view()), ] serialization class from rest_framework import serializers class BookSerializer(serializers.Serializer): title = seri ...

This article will lead to several questions, and through examples to analyze the delegation and usage in C#as a starting point For delegation I find that most people have the following questions, or may have encountered such questions in an interview: Is a delegate equivalent to a C/C++ function pointer? What exactly is a delegation? What exac ...

data structure1. Save data 2. Process dataArray + operationCensored deletion Stack and queueIt is a linear table with limited operation Stack is the operation of inserting and deleting at one end -- > the other end of the stack is called the stack bottom (stack and stack area are two concepts) (it is a data structure)The queue is first in, ...

[TOC] 1.1 what is Eureka When developing large-scale projects, service providers and service callers will be very large, and the cost of managing services will increase exponentially. Eureka will be responsible for service registration, discovery and status monitoring. 1. Registration: Eureka is responsible for managing and recording the inform ...

The effect is as follows: The original picture starts to change after the mouse enters                                                                                Implementation requirements: Page loading starts, and the effect is as shown in the original figure. After the mouse enters the box, the picture will be highlighted at the current ...

1 why to apply thread pool    first of all, we know that thread is a precious resource for the operating system. For example, if we create it manually every time we use it, the thread will shut down automatically after executing the run() method, and we have to create it manually the next time we use it. This is a waste of time and re ...