linux-china

@startuml

class Building {
  - apartments
}
Building --* Apartment: contains >

class Car {
  - wheels
}

linux-china

https://gist.github.com/gravitylow/fb595186ce6068537a6e9da6d8b5b96d

linux-china

kotlinc -include-runtime hello.kt -d hello.jar
native-image  -jar hello.jar

linux-china

package org.mvnsearch.builder

class FoodOrder private constructor(builder: FoodOrder.Builder) {

    val bread: String?
    val meat: String?

    init {
        this.bread = builder.bread
        this.meat = builder.meat

linux-china

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Envoy Proxy config schema",
  "description": "JSON Schema for Envoy Proxy config",
  "type": "object",
  "properties": {
    "admin": {
      "type": "object",
      "description": "Configuration for the local administration HTTP server",
      "properties": {

linux-china

public final class FilenameComparator  implements Comparator<String> {

    private static final Pattern NUMBERS = 
        Pattern.compile("(?<=\\D)(?=\\d)|(?<=\\d)(?=\\D)");
    private static final Pattern FILE_ENDING =
        Pattern.compile("(?<=.*)(?=\\..*)");

    @Override
    public final int compare(String o1, String o2) {
        if (o1 == null || o2 == null)

linux-china

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.web.ServerProperties;
import org.springframework.context.annotation.Configuration;

import javax.annotation.PostConstruct;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Arrays;
import java.util.Collections;

linux-china

for file in ~/.bashrc.d/*.bashrc;
do
 source “$file”
done

linux-china

 @Test
    public void testBitGet() {
        //redisTemplate.opsForValue().setBit("user2.flags",0,true);
        BitSet value = redisTemplate.execute(new RedisCallback<BitSet>() {
            public BitSet doInRedis(RedisConnection redis) throws DataAccessException {
                return fromByteArrayReverse(redis.get("user.1.flags".getBytes()));
            }
        });
        System.out.println(value);
    }

linux-china

 <plugin>
                <artifactId>kotlin-maven-plugin</artifactId>
                <groupId>org.jetbrains.kotlin</groupId>
                <version>${kotlin.version}</version>
                <executions>
                    <execution>
                        <id>compile</id>
                        <goals>
                            <goal>compile</goal>
                        </goals>