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How do you delete an ActiveRecord object?
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It's destroy and destroy_all methods, like
user.destroy
User.find(15).destroy
User.destroy(15)
User.where(age: 20).destroy_all
User.destroy_all(age: 20)
Alternatively you can use delete and delete_all which won't enforce :...
How to make an HTTP POST web request
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Available in: .NET Framework 4.5+, .NET Standard 1.1+, .NET Core 1.0+ .
It is currently the preferred approach, and is asynchronous and high performance. Use the built-in version in most cases, but for very old platforms there is a NuGet package.
using System.Net.Http;
Setup
It is recommended...
Best way to assert for numpy.array equality?
I want to make some unit-tests for my app, and I need to compare two arrays. Since array.__eq__ returns a new array (so TestCase.assertEqual fails), what is the best way to assert for equality?
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How to extract the n-th elements from a list of tuples?
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edited Mar 6 '19 at 20:33
cs95
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Swift - Split string over multiple lines
How could I split a string over multiple lines such as below?
15 Answers
15
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What is a regular expression for a MAC Address?
...8 addresses in
human-friendly form is six groups of
two hexadecimal digits, separated by
hyphens - or colons :.
So:
^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$
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Openssl is not recognized as an internal or external command
...nerate an application signature for my app which will later be integrated with Facebook. In one of Facebook's tutorials, I found this command:
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WARN Could not determine content-length of response body. Set content-length of the response or set
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edited Aug 10 '13 at 17:03
Jay Sullivan
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iPhone Data Usage Tracking/Monitoring
...e searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows.
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Is it possible to clone html element objects in JavaScript / JQuery?
...in JavaScript using the cloneNode() method:
// Create a clone of element with id ddl_1:
let clone = document.querySelector('#ddl_1').cloneNode( true );
// Change the id attribute of the newly created element:
clone.setAttribute( 'id', newId );
// Append the newly created element on element p
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