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How did this person code “Hello World” with Microsoft Paint?
...are used to represent colors (i.e. none of them are "mandated" by the file format2, they all come from the color of each pixel), and there's a perfect 1:1 correspondence between pixel colors and bytes written in the file; thus, using perfectly chosen colors you can actually write anything you want i...
How do I combine two data frames?
...with big data and need to concatenate multiple datasets. concat can get performance-intensive, so if you don't want to create a new df each time, you can instead use a list comprehension:
frames = [ process_file(f) for f in dataset_files ]
result = pd.append(frames)
(as pointed out here in the do...
Why is Cache-Control attribute sent in request header (client to server)?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
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How do I use the includes method in lodash to check if an object is in the collection?
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The includes (formerly called contains and include) method compares objects by reference (or more precisely, with ===). Because the two object literals of {"b": 2} in your example represent different instances, they are not equal. Notice:
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jQuery selector for inputs with square brackets in the name attribute
...a matter of using regular expressions. This is very useful when submitting form data directly to an array or list within your favorite view framework. That also helped me answering the question about deleting objects with multiple primary key elements. ;)
– Luiz Feijão Verone...
How to convert java.sql.timestamp to LocalDate (java8) java.time?
...number of upvotes for it. See my answer for details stackoverflow.com/a/57101544/2032701
– Ruslan
Jul 18 '19 at 19:40
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Sorting Python list based on the length of the string
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The same as in Eli's answer - just using a shorter form, because you can skip a lambda part here.
Creating new list:
>>> xs = ['dddd','a','bb','ccc']
>>> sorted(xs, key=len)
['a', 'bb', 'ccc', 'dddd']
In-place sorting:
>>> xs.sort(key=len)
>...
How to check if a user likes my Facebook Page or URL using Facebook's API
...tent. For example - this is ALLOWED: "Like Us to see the competition entry form". And this is NOT ALLOWED: "Like Us and you will be automatically entered into our competition".
– Chris Jacob
Mar 13 '12 at 1:29
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Should I impose a maximum length on passwords?
... a custom client might send a 1-GB string in the "thisisthehashedpassword" form field)
– Piskvor left the building
Aug 11 '11 at 9:56
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How do you select a particular option in a SELECT element in jQuery?
... correct. "selected" is an attribute of the <option> w3.org/TR/html5/forms.html#attr-option-selected
– Carlos Llongo
Jul 25 '17 at 8:45
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