Programmer Think

After genome assembly or transcriptome differential gene expression analysis, annotation of the results is an important step. How to annotate and how to obtain accurate annotation results? Nr database, fully known as non redundantprotein sequence database, refers to the protein database containing the sequences in GenPept, Swissprot, PIR, ...

As our main tool for operating K8S, kubectl has a wealth of functions, but it is still inconvenient to use if it is not polished. Today, let's see how to polish our kubectl to make it easier to use.1, Command auto completionkubectl provides many commands. If it is too tired to manually type one character at a time, how to configure automatic co ...

Inner class: put the definition of one class inside the definition of another class. Advantages: organize some logically related classes together (elegant and clear), and control the visibility of internal classes. 10.1 creating internal classes Put the definition of the class inside the peripheral class public class Parcel1 { class Des ...

Comparison between Comparable and Comparator in Java Introduction to Comparable Comparable is a sort interface. If a class implements the Comparable interface, it means that "this class supports sorting". That is, classes that implement the Comparable interface support sorting. Assuming that there is a "List (or array) o ...

Catalogue of series articles I Array type problem solving method 1: dichotomy II Array type problem solving method 2: Double finger needle method III Array type problem solving method 3: sliding window IV Array type problem solving method 4: simulation V The basic operation and classic topics of the linked list Vi Classic title of hash tab ...

1, String String: string constant. The length of the string is immutable. In Java, string is immutable The underlying code of String is a char array decorated with final. After defining a String variable, the content of the variable is immutable We can view the source code as follows: public final class String implements java.io.Seriali ...

1, Preliminary understanding of java thread 1. java create thread Several ways of creating threads in java Inherit Thread classImplement Runnable interfaceCreate a thread pool using ExecutorServiceImplement the Callable interface to create a thread with a return value Example: //Inherit Thread class public class MyThread extends Thread { ...

catalogue 1, First knowledge database 1.1 types of DBMS 1.2 common system structure of RDBMS 1.3 database installation 1.3.1 introduction to Alibaba cloud MySQL server 1.3.2 introduction to building local MySQL environment 2, First knowledge of SQL 2.1 concept introduction 2.2 basic writing rules of SQL 2.3 creation of database (CREATE DATABASE ...

1. It is forbidden to use global variables in the collaborative process to avoid data disorder; (non multi process collaboration scenario)Reason: the collaboration process shares process resources, that is, the global variables are shared. When used to process tasks, the global variables are easy to be tampered with by other collaboration proce ...

In daily development, there are many similar operations of reducing inventory, such as commodity inventory in e-commerce system, prize inventory in lottery system, etc. SolutionUsing mysql database, use a field to store inventory, and update this field every time you deduct inventory.The database is still used, but the inventory is layered and ...