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How do I get the find command to print out the file size with the file name?
...ust the h extra from jer.drab.org's reply. saves time converting to MB mentally ;)
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How do you send a HEAD HTTP request in Python 2?
What I'm trying to do here is get the headers of a given URL so I can determine the MIME type. I want to be able to see if http://somedomain/foo/ will return an HTML document or a JPEG image for example. Thus, I need to figure out how to send a HEAD request so that I can read the MIME type without...
vagrant up failed, /dev/vboxnetctl: no such file or directory
...e:
Grant permission to VirtualBox under System Preferences > Security & Privacy > General (this request is new to macOS High Sierra)
Open Terminal and run: sudo "/Library/Application Support/VirtualBox/LaunchDaemons/VirtualBoxStartup.sh" restart
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Display a float with two decimal places in Python
I have a function taking float arguments (generally integers or decimals with one significant digit), and I need to output the values in a string with two decimal places (5 -> 5.00, 5.5 -> 5.50, etc). How can I do this in Python?
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Is it better to use std::memcpy() or std::copy() in terms to performance?
...ffer indicated by destination. std::copy doesn't require shenanigans like &*container.begin() or &container.back() + 1.
– David Stone
Apr 26 '12 at 17:13
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Is it possible to figure out the parameter type and return type of a lambda?
...ame T>
struct function_traits
: public function_traits<decltype(&T::operator())>
{};
// For generic types, directly use the result of the signature of its 'operator()'
template <typename ClassType, typename ReturnType, typename... Args>
struct function_traits<ReturnType(Cl...
List all sequences in a Postgres db 8.1 with SQL
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Useful explanation of dependencies between tables & sequences. But your query found not all sequences for me. It seems that some sequences are exists without any dependencies.
– Evgeny Nozdrev
Jul 18 '18 at 9:53
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JavaScript: filter() for Objects
...e extending all object types, including object literals.
Here's a quick example you can try:
// Extend Object.prototype
Object.prototype.extended = "I'm everywhere!";
// See the result
alert( {}.extended ); // "I'm everywhere!"
alert( [].extended ); // "I'm everywhere!"
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Validating email addresses using jQuery and regex
...nction isValidEmailAddress(emailAddress) {
var pattern = /^([a-z\d!#$%&'*+\-\/=?^_`{|}~\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+(\.[a-z\d!#$%&'*+\-\/=?^_`{|}~\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+)*|"((([ \t]*\r\n)?[ \t]+)?([\x01-\x08\x0b\x0c\x0e-\x1f\x7f\x21\x23-\x5b\x5d-\x7e\u00A0-\...
Is there a Mutex in Java?
...ause a Semaphore object initialized with 1 permit does not help me.
Think of this case:
8 Answers
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