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How to specify the types of x and y if x and y is type Tree? Tree a = Node a | Empty

oiyio
– oiyio

2013-04-26 17:05:45 +00:00
Commented Apr 26, 2013 at 17:05
@user1308990: I'm not quite sure what you mean, but you can just do the same as you would for any function. Operators only have slightly different syntax.

hammar
– hammar

2013-04-26 17:12:33 +00:00
Commented Apr 26, 2013 at 17:12
OK.I got it . i do it to understand how overloading works. Now it is clear. However , i have one question too and i commented the question below the @amindfv 's answer . Could you clear it? Thanks

oiyio
– oiyio

2013-04-26 17:38:42 +00:00
Commented Apr 26, 2013 at 17:38
@user1308990: No, you don't need to list == in the exports. Instances are exported automatically.

hammar
– hammar

2013-04-26 17:42:36 +00:00
Commented Apr 26, 2013 at 17:42

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create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)

<https://example.com>

[example](https://example.com)

<a href="https://example.com">example</a>

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