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How does a “stack overflow” occur and how do you prevent it?
...is when you've used up more memory for the stack than your program was supposed to use. In embedded systems you might only have 256 bytes for the stack, and if each function takes up 32 bytes then you can only have function calls 8 deep - function 1 calls function 2 who calls function 3 who calls f...
How to fix Error: listen EADDRINUSE while using nodejs?
... @Nobita Does this work in Windows? Now I realize it might be a MAC OS command. Anyway, I restarted my PC and didn't get this error anymore. I think some other application was using the same port node was trying to use.
– Ulysses Alves
Jan 5 '16 at 13:49...
git-diff to ignore ^M
...s contains ^M as newline separators. Diffing these files are apparently impossible, since git-diff sees it as the entire file is just a single line.
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Which, if any, C++ compilers do tail-recursion optimization?
..., 4.7 and 4.8 targeting various platforms) is enabled at levels -O2, -O3, -Os.
– FooF
Jan 10 '14 at 6:53
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Is it possible to have nested templates in Go using the standard library?
... in blocks of the base templates, like Jinja/django-templates does. Is it possible using just html/template in the standard library.
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How do I disable the security certificate check in Python requests
...):
# Verification happens only once per connection so we need to close
# all the opened adapters once we're done. Otherwise, the effects of
# verify=False persist beyond the end of this context manager.
opened_adapters.add(self.get_adapter(url))
settings = ol...
Configuring diff tool with .gitconfig
...r list I had to do the very same setting which you have mentioned in your post and everything started to work without any additional configuration. So does that mean that git supports "winMerge" as well out of the box because as much as I can understand from your post that it requires some extra wor...
Display open transactions in MySQL
...ml
4.5.1.6.3. Disabling mysql Auto-Reconnect
If the mysql client loses its connection to the server while sending a statement, it immediately and automatically tries to reconnect once to the server and send the statement again. However, even if mysql succeeds in reconnecting, your first con...
Synchronise ScrollView scroll positions - android
...ve 2 ScrollViews in my android layout. How can I synchronise their scroll positions?
4 Answers
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Delete empty lines using sed
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You may have spaces or tabs in your "empty" line. Use POSIX classes with sed to remove all lines containing only whitespace:
sed '/^[[:space:]]*$/d'
A shorter version that uses ERE, for example with gnu sed:
sed -r '/^\s*$/d'
(Note that sed does NOT support PCRE.)
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