MarkDown语法

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Heading
=======
Sub-heading

---

Another deeper heading

Paragraphs are separated
by a blank line.

Two spaces at the end of a line leave a
line break.

Text attributes italic, italic, bold, bold, monospace.

Horizontal rule:

---

Bullet list:

• apples
• oranges
• pears

Numbered list:

1. apples
2. oranges
3. pears

A link.

哈哈哈哈

哈哈哈

- (void)setEmptyView:(UIView *)emptyView
{
    [self willChangeValueForKey:@"HJEmptyView"];
    objc_setAssociatedObject(self, &UITableViewEmptyView,
                             emptyView,
                             OBJC_ASSOCIATION_ASSIGN);
    [self didChangeValueForKey:@"HJEmptyView"];
}