Several common loop traversals in javascript

In project development, no matter which framework is built, data processing is necessary, and data processing can not be separated from various traversal cycles. There are many ways of loop traversal in javascript. Record several common js loop traversals. I. for cycle for loops should be the most common, the most used method of loop traversa ...

Posted on Mon, 05 Aug 2019 03:51:29 -0700 by kester

First Understanding RabbitMQ Arrangement

Introduction to RabbitMQ RabbitMQ is a message queue that acts as a proxy, allowing software and applications to connect and expand. These applications can be linked together to form a larger application, or connect user equipment and data. Message system achieves asynchronization and decoupling of applications by separating the sending and re ...

Posted on Mon, 05 Aug 2019 03:42:42 -0700 by ctsttom

Netty Source Analysis--FastThreadLocal Analysis

The source code for ThreadLocal was discussed in the previous section, so let's look at FastThreadLocal in this section.I think it's simpler than ThreadLocal because it's more efficient due to the lack of cleanup and cleanup of Entry. Like ThreadLocal, we'll start with a structure diagram:        See how this diagram differs from ThreadLocal by ...

Posted on Sun, 04 Aug 2019 10:48:05 -0700 by tllewellyn

python-object-oriented-double bottom method

_ str_ and repr__ class Course(object): def __init__(self, name, price): self.name = name self.price = price def __str__(self): return "func is __str__ ,curriculum:{},Price:{}".format(self.name, self.price) # python = Course("python", 25000) print(python) # Func is__str_, course: python, price: 25 000 print(" ...

Posted on Sun, 04 Aug 2019 07:49:17 -0700 by kingconnections

python-object-oriented-reflection

isinstance and issubclass isinstance(obj,cls) checks whether obj is an object of class CLS class Test: def __init__(self, var): self.var = var def show(self): print("Ha-ha!") t = Test('test') a = 'test' print(isinstance(t, Test)) # True print(isinstance(a, Test)) # False The difference between isinstance and type ...

Posted on Sun, 04 Aug 2019 07:42:17 -0700 by dfarrell

Virtual Functions in Inheritance such as C++ Learning (Notes)

1. Polymorphic Behavior Polymorphism is a feature of object-oriented languages, which enables us to deal with different types of objects in a similar way. In C++ we can realize subtype polymorphism by inheriting hierarchical structure. We can learn more about polymorphism through the following code:   #include<iostream> using name ...

Posted on Sun, 04 Aug 2019 03:05:21 -0700 by IceRegent

OpenGL Introduction 8: Camera

This is a personal learning record, learning suggestions to see the tutorial https://learnopengl-cn.github.io/ Thank you very much to the original author Joey DeVries and many excellent tutorials for Chinese translators. Recent developments Preface We already know what observation matrices are and how to use them to move scenarios (we moved a l ...

Posted on Sat, 03 Aug 2019 08:48:52 -0700 by vickyjackson

dashboard authentication, resource requirements, resource constraints and HeapSter for k8s

1. Deployment of dashboard The kubernetes-dashboard runtime requires sa account privileges Dashboard official address: https://github.com/kubernetes/dashboard # Download mirrors on node1 docker pull googlecontainer/kubernetes-dashboard-amd64:v1.10.1 docker tag googlecontainer/kubernetes-dashboard-amd64:v1.10.1 k8s.gcr.io/kubernetes-dashb ...

Posted on Sat, 03 Aug 2019 05:41:27 -0700 by Griven

Source code analysis of leveldb Arena

Preface Memory usage is very important for a high performance server program. C++ provides new/delete to manage memory application and release, but for small objects, the direct use of new/delete costs a lot, requires extra space and time, and the cost-effective ratio is not high. In addition, memory fragmentation caused by multiple applicatio ...

Posted on Sat, 03 Aug 2019 02:42:11 -0700 by arnihr

LeetCode 2 - Addition of Two Numbers (JAVA)

Two non-empty linked lists are given to represent two non-negative integers. Among them, their respective digits are stored in reverse order, and each of their nodes can only store one digit. If we add the two numbers together, we return a new list to represent their sum. You can assume that neither of these numbers will begin with zero excep ...

Posted on Sat, 03 Aug 2019 01:19:38 -0700 by ephmynus