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I've been watching how to use Lambda and Python for the past two days, but I'm usually more used to using PowerShell to manage various systems. Try using PowerShell in Lambda. First, you need to install the following three modules on the local computer. Install PowerShell Corehttps://github.com/powershell/powershell Install the. Net core softw ...

Article directory brief introduction Example Prepare an entity class first Grouping filter Summation Maximum value List to Map sort Duplicate removal Get a list object, a field, and assemble a new list Batch setting list list list list field to the same value brief introduction New features of ...

This section looks at how to manage EC2 snapshots through boto3. In the actual production environment, beans use the solution EBS Snapshot Scheduler provided by AWS, import the stack of Cloudformation directly, automatically configure Lambda function and DynamoDB database, and then we can set it up by label. From a learning point of view, let' ...

Author: Tang Tong brief introduction Creating threads is the most basic operation in multithreaded programming. Tong Ge summed up that there are about eight ways to create threads, you know? 1. Inherit the Thread class and override the run() method public class CreatingThread01 extends Thread {  @Override  public void run() {  System.out.pr ...

lambda is a new feature of JDK 1.8. Functional programming can not be ignored. See: lambda underlying implementation principle 1. The compiler generates a method for each lambda expression The method name is lambda lambda $0,1,2,3,,1,2,3, but the expression referenced by the method does not genera ...

title: stream and functional interface date: 2019-07-24 14:03:02 categories: java Foundation tags: 1. Mind Mapping 2. Stream and Functional Interface 2.1. Acquisition stream 2.2. Flow method 2.2.1. forEach 2.2.2. filter 2.2.3. map 2.2.4. count 2.2.5. limit 2.2.6. skip 2.2.7. concat 2.3. Use ...

Under the project folder, create a new setup.py file, as follows: import os import re from distutils.core import Extension, setup from Cython.Build import cythonize from Cython.Compiler import Options exclude_so = ['__init__.py', "setup.py"] sources = ['./'] extensions = [] for source in sour ...

lambda expressions Optimization of lambda The following abbreviations can be used in JDK8 new Thread(() -> System.out.println("Multithread task execution!")).start(); // Startup thread Arrays.sort(array,(a,b)->a.getAge()-b.getAge()) //sort Format of Lambda Standard format: (parameter type parameter name) - > {code statement} Ellips ...

This demo is based on poi encapsulated object annotation import and export, the project framework is spring boot project! Simply explain the knowledge points involved in this demo, hoping to bring convenience to beginners! poi-excel basic operations (tools) Use of custom annotations Definition of global exception capture New features of J ...

ThreadLocal: Each thread stores its own local and local areas, similar to containers, in which each thread has a certain storage space.Common methods get/set/initialValueThe official recommendation is private staticEach thread stores its own data, and changes do not affect other threadsThe ThreadLocal subclass InheritableThreadLocal:Data inher ...