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This is a good answer for checking return values, but I don't think this answers what the OP was asking. I think the OP wants to know if there is a way to determine if a function writes to the output stream.

Chris Thompson
– Chris Thompson

2010-04-14 16:54:44 +00:00
Commented Apr 14, 2010 at 16:54

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Correct minor typos or mistakes
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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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