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Why is arr = [] faster than arr = new Array?
...Y_INIT from an object property accessor (e.g. obj[foo]) or brackets inside strings/regex literals (e.g. "foo[]bar" or /[]/)
This is miniscule, but we also have more tokens with new Array. Furthermore, it's not entirely clear yet that we simply want to create an array. We see the "new" token, but "...
Why is it a bad practice to return generated HTML instead of JSON? Or is it?
...there is still the solution/hack of sending all those parts inside one big string that groups several HTML portions, and extract the relevant parts in JS.
For instance, you could return some string that looks like this :
<!-- MARKER_BEGIN_PART1 -->
here goes the html
code for part 1
<!-- ...
How can I hide an HTML table row so that it takes up no space?
...w still contribute to the widths of the columns. I will sometimes make an extra row at the bottom of a table with just some spacers that make it so certain columns can't be less than a certain width, then hide the row using this method. (I know you're supposed to be able to do this with other css ...
In Markdown, what is the best way to link to a fragment of a page, i.e. #some_id?
...nt anchor. This will help to keep your HTML clean, as there's no need for extra markup.
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How can I compare two dates in PHP?
...abase the date looks like this 2011-10-2
Store it in YYYY-MM-DD and then string comparison will work because '1' > '0', etc.
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Currency formatting in Python
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Cool idea! With Python 3.6 and f-strings, it looks even more beautiful: print(f'Value is: ${value:,.2f}'.replace('$-', '-$'))
– Timo Saloranta
Apr 10 '19 at 15:30
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What is a monad?
... element types, for example transform an array of numbers into an array of strings or something else. As long as it still an Array.
This can be described a bit more formally using Typescript notation. An array have the type Array<T>, where T is the type of the elements in the array. The method...
How to check visibility of software keyboard in Android?
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Some keyboards, some of the time, have an extra row of custom keys on top (for instance, predicted words). These are apparently not part of the keyboard itself, since using the getLastKeyboardHeightInPx() does not include the height of that row. Do you know of a way ...
How to hide a in a menu with CSS?
...ption
jQuery(selector).toggleOption(false); // hide option
EDIT 3: Added extra check suggested by @user1521986
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Eager load polymorphic
...w you join a table named by the value stored in a column. By defining the extra relationship belongs_to :shop, you are giving ActiveRecord the information it needs to complete the join.
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