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Standard library map set delete Delete operation The map is as follows: map<int, size_t> cnt{{2,22}, {3,33}, {1,11}, {4,44}; Delete method: Delete operation type Function description cnt.erase(3); Delete the element with key 3 and return the number of deleted elements cnt.erase(p); P is the iterator, delete the element pointed by P ...

Catalog I. Introduction 2, Log specific package 3, Turn off debugging 4, Source address 5, Content recommendation I. Introduction Why encapsulate logs? First, compare the effect: Print results: Before encapsulation: enter Log.e(TAG, "onCreate:",); you need to enter TAG and msg. And we can view the log i ...

Introduction: there are wall problems in google's products in China. As a cloud native machine learning suite, kubeflow helps the team greatly. For the team without turning over the wall, building kubeflow based on the domestic image can help you solve many problems. Here, we provide you a set of kubeflow 0.6 installation scheme based on the d ...

At present, there are several commonly used Golang Kafka clients, each of which has its own advantages and disadvantages Client name Advantages and disadvantages sarama The number of users is relatively large, but it is relatively difficult to use, with better performance confluent-kafka-go The encapsulation of Kafka in C language has st ...

Packaging and deployment of spring boot First, packing There are many ways to package spring boot. Some of them are war, jar, or directly submitted to github for packaging and deployment through jekins. This is mainly about how to make jar for deployment. War is not recommended, because springboot is suitable for front-end and back-end separati ...

Copyright notice: This is the original article of blogger. Please indicate the author and link for reprint. More on KunMinXhttps://blog.csdn.net/IamTheReal/article/details/82837568 0. Add the following dependencies to build.gradle of the module implementation "com.kunminx.viabus:viabus-android:0.3.3" 1. Define an interface f ...

1. Manually throw an exception 1. Custom invalid name exception: (1) Compile-time exceptions, inheriting Exception directly (2) Runtime exceptions, inheriting RuntimeException directly Example: Note: throws throws an exception up, if it runs to the top, that is, to the main main method, don't throw it anymore, use try...catch.... To print it ou ...

In the actual development process of my system, I meet a requirement that I need to make the application return to the original location of each page when it jumps between each page for the convenience of users. When I look up the data on the Internet, I see a lot of schemes, and there are different opinions, but there are only a f ...

Author: Wang Jishun Baozun e-commerce DBA is mainly responsible for the design and development of database monitoring alarm and automation platform, and is good at database performance optimization and fault diagnosis. background As the number of servers in each environment of the company increases, there are multiple Prometheus clusters dep ...

Service registration and discovery, service discovery is mainly used to achieve automatic registration and discovery of individual micro-service instances. It is the core of micro-service governance. To learn Spring Cloud Alibaba, first of all, you need to understand the service registration and discovery component in the framework, Nacos. 1. S ...