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Efficient way to rotate a list in python
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If you just want to iterate over these sets of elements rather than construct a separate data structure, consider using iterators to construct a generator expression:
def shift(l,n):
return itertools.islice(itertools.cycle(l),n,n+len(l))
>>> list(sh...
Remote debugging a Java application
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The following works with Eclipse's default settings: -agentlib:jdwp=transport=dt_socket,server=y,address=8000
– Sundae
Sep 4 '14 at 9:30
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How to create a trie in Python
..... for letter in word:
... current_dict = current_dict.setdefault(letter, {})
... current_dict[_end] = _end
... return root
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>>> make_trie('foo', 'bar', 'baz', 'barz')
{'b': {'a': {'r': {'_end_': '_end_', 'z': {'_end_': '_end_'}},
'z': {'_en...
How can I troubleshoot my Perl CGI script?
...f Unix, changing the mode to 755 is recommended:
chmod 755 filename. Never set a mode to 777!
Are you using use strict?
Remember that Perl automatically creates variables when
you first use them. This is a feature, but sometimes can
cause bugs if you mistype a variable name. The pragma
use stric...
file_put_contents - failed to open stream: Permission denied
...uld make file_put_contents work now. But for more security you better also set the permissions like below
find /var/www -type d -print0 | xargs -0 chmod 0755 # folder
find /var/www -type f -print0 | xargs -0 chmod 0644 # files
change /var/www to the root folder of your php files
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How to push different local Git branches to Heroku/master
Heroku has a policy of ignoring all branches but 'master'.
11 Answers
11
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How do API Keys and Secret Keys work? Would it be secure if I have to pass my API and secret keys to
...e doesn't need the private key link is broken now.
– setzamora
Mar 10 '16 at 6:14
@Joset updated the link pointing to...
F12 Jump to method -> go back to previous method after making the jump?
I can jump to code if I click in a method name and hit F12. But, is there a keyboard short cut to jump back to the previous code editor location?
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How do I change the UUID of a virtual disk?
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The correct command is the following one.
VBoxManage internalcommands sethduuid "/home/user/VirtualBox VMs/drupal/drupal.vhd"
The path for the virtual disk contains a space, so it must be enclosed in double quotes to avoid it is parsed as two parameters.
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Best practices for circular shift (rotate) operations in C++
... Warning: This code is broken if INT is a signed integer and the sign is set! Test for example rol<std::int32_t>(1 << 31) which should flip over to 1 but actually becomes -1 (because the sign is retained).
– Nobody
Jun 2 '14 at 20:49
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