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Best way to test if a row exists in a MySQL table
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You could also try EXISTS:
SELECT EXISTS(SELECT * FROM table1 WHERE ...)
and per the documentation, you can SELECT anything.
Traditionally, an EXISTS subquery starts with SELECT *, but it could
begin with SELECT 5 or SELECT column1 or anything ...
select2 - hiding the search box
For my more significant selects, the search box in Select2 is wonderful. However, in one instance, I have a simple selection of 4 hard-coded choices. In this case, the search box is superfluous and looks a little silly being present. Is it possible to hide it somehow? I took a look through the docum...
How can I verify if one list is a subset of another?
...lications. Basically the fact that one is a dict means you may not need to convert the static part to a set (you could check all(itertools.imap(dict.has_key, mylist)) with O(n) performance).
– Yann Vernier
May 18 '13 at 14:28
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How to select a drop-down menu value with Selenium using Python?
I need to select an element from a drop-down menu.
13 Answers
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How to style the option of an html “select” element?
...ed via CSS.
There are replacement plug-ins/libraries that look like a <select> but are actually composed of regular HTML elements that CAN be styled.
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jQuery get selected option value (not the text, but the attribute 'value')
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04/2020: Corrected old answer
Use :selected psuedo selector on the selected options and then use the .val function to get the value of the option.
$('select[name=selector] option').filter(':selected').val()
Side note: Using filter is better then using :sele...
How to create REST URLs without verbs?
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Sometimes I find it useful to convert the words into a "processing resource" like "activator" or "validator". As per RFC 2616 POST can be used to "Provide a block of data...to a data-handling process"
– Darrel Miller
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What is [Serializable] and when should I use it?
...have to think about how the object is represented because you will need to convert to a different format. This conversion is called SERIALIZATION.
Uses for Serialization
Serialization allows the developer to save the state of an object and recreate it as needed, providing storage of objects as well ...
Check if option is selected with jQuery, if not select a default
Using jQuery, how do you check if there is an option selected in a select menu, and if not, assign one of the options as selected.
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What do numbers using 0x notation mean?
...omplement- a clever way that does not require '-' sign. So, it's basically converting from binary to hex, negative or positive.
– Shuvo Sarker
Mar 6 at 21:05
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