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How to count items in JSON object using command line?
...-line JSON processor:
jq length /tmp/test.json
Prints the length of the array of objects.
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Is there a reason that we cannot iterate on “reverse Range” in ruby?
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It builds temporary array, at least in 2.4.1 ruby-doc.org/core-2.4.1/Enumerable.html#method-i-reverse_each
– kolen
Aug 24 '17 at 20:16
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How do I access this object property with an illegal name?
...t = 'todo-list';
echo $x->$todolist;
If you wanted to convert it to an array, which can be a little more easily (ie the obvious $ret['todo-list'] accessing), this code is taken almost verbatim from Zend_Config and will convert for you.
public function toArray()
{
$array = array();
forea...
How can I sharpen an image in OpenCV?
...ry a simple kernel and the filter2D function, e.g. in Python:
kernel = np.array([[-1,-1,-1], [-1,9,-1], [-1,-1,-1]])
im = cv2.filter2D(im, -1, kernel)
Wikipedia has a good overview of kernels with some more examples here - https://en.wikipedia.org/wiki/Kernel_(image_processing)
In image proce...
Can a C# class inherit attributes from its interface?
...tCustomAttributes( type, typeof( T ), false ).Select( arg => (T)arg ).ToArray();
}
/// <summary>Searches and returns attributes.</summary>
/// <typeparam name="T">The type of attribute to search for.</typeparam>
/// <param name="type">The type which is searched for ...
list.clear() vs list = new ArrayList(); [duplicate]
Which one of the 2 options is better and faster to clear an ArrayList, and why?
8 Answers
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Regular Expression to get a string between parentheses in Javascript
... like below: "I expect (five) hundred dollars ($500)" let's say I want an array of those special strings.
– Mohamad Al Asmar
Jan 4 '18 at 15:11
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Using Sinatra for larger projects via multiple files
...mon in Ruby. You don't "define" a class, you "reopen it". For example, the Array class is defined by the core library, but you can later "monkeypatch" by using class Array; def some_awesome_method; end and a) all previous Array functionality is preserved, and b) all Array instances will get your new...
A proper wrapper for console.log with correct line number?
...ces).
/// </summary>
/// <param name="args" type="Array">list of details to log, as provided by `arguments`</param>
/// <remarks>Includes line numbers by calling Error object -- see
/// * http://paulirish.com/2009/log-a-lightweight-wrapper-for-...
How to display length of filtered ng-repeat data
I have a data array which contains many objects (JSON format). The following can be assumed as the contents of this array:
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