example usage

The HTML specification is maintained by the W3C.

Optional<String> message = Optional.ofNullable(record.value()); // (1)
if (message.isPresent()) {
    System.out.println(message.get());
}

1. optional判空处理.

def bubble_sort(items):
    for i in range(len(items)):
        for j in range(len(items) - 1 - i):
            if items[j] > items[j + 1]:
                items[j], items[j + 1] = items[j + 1], items[j]

CC++

#include <stdio.h>

int main(void) {
printf("Hello world!\n");
return 0;
}

#include <iostream>

int main(void) {
std::cout << "Hello world!" << std::endl;
return 0;
}

m	a
a	bdjfnb;srodnbodsrnbo;drbndrndnbjno
c	d

删除线deleted 下划线added 高亮highlighting tianone a single

Image 说明

• name
• age
• tel

We can use Material Icons .

We can also use Fontawesome Icons :fontawesome-solid-ambulance:.

That's not all, we can also use Octicons :octicons-octoface:.