Programmer Group

Preface When using the thread pool, I was always confused about the handling of exceptions. Sometimes, there is an exception output, sometimes not. I made a summary today. practice ExecutorService exec1 = Executors.newFixedThreadPool(1); exec1.submit(()->{ Object obj = null; System.out.println(obj.toStr ...

We all know that switch is used to go through process branches, and in most cases to match a single value, as shown in the following example: /** * @from WeChat public address: Java technology stack * @author Stack length */ private static void test(int value) { switch (value) { case 1: System.out.println("1"); ...

Convert two numbers to binary arrays Also convert the result to a binary array Two input and one output subtracters simulated by rnn Where i is the binary array of two numbers, j is the array after subtraction, and k is the simulation result i: [[0. 0. 1. 0. 0. 1. 0. 1.] [0. 0. 1. 0. 0. 0. 0. 0.]] j [0. 0. 0. 0. 0. 1. 0. 1.] k [0. 0. 0. ...

Microsoft should implement some simple functions for INotifyPropertyChanged. For example, in automatic properties, you only need to specify {get; set; notify;} {get; set; notify;} {get; set; notify;}. I think it makes sense to do so. Or do you have any complications? Can we implement "notification" and other functions in propertie ...

Get ready Install: pip install flaskFlask Quick start: http://docs.jinkan.org/docs/flash/quickstart.html "QuickStart" Rapid construction Build in the project root directory: webapp package directory, where the flash code is stored. There is a "init. Py" file in the package templates directory to store template files Stati ...

  Catalog Python Basics install install Basic use print function Basic mathematical operation variable while and for loops while cycle for cycle if judgement if judgement if else judgment if elif else judgment Defining function def function Function parameter Function default parameters Variable form ...

Using rnn to fit delay and inversion sequences In fact, the rnn of this layer is not as good as full connection. When the sequence length is too long, the number of last full connection nodes needs to be increased. However, if the sequence is relatively short, there are too many parameters and the result is very accurate.... Scroll the sequen ...

Date and time LocalDate Create a LocalDate object and read its value // According to the date of establishment LocalDate date1 = LocalDate.of(2014, 3, 18); // read System.out.println(date1.getYear()); // 2014 System.out.println(date1.getMonth()); // MARCH System.out.println(date1.getMonth().getValue()); // 3 System.out.println(date1.getDayOfM ...

Java8 - using Comparator.comparing for comparison sorting Sorting with external Comparator comparator When we need to sort the elements of the collection, we can use java.util.Comparator to create a comparator for sorting. The comparator interface is also a functional interface. We can use lambda expressions. Here is an example, package com ...

Preface Stream is a new feature added in Java 1.8, which greatly simplifies the processing of collection objects and so on. As the name implies, Stream is a Stream. It regards the input set elements as a Stream. Like pipeline processing, it can filter, sort, aggregate and other operations on set elements. Stream detailed e ...