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What are the implications of using “!important” in CSS? [duplicate]
...ikely it would cause undesired effects further down the line. That doesn't mean it's never okay to use though.
What's wrong with !important:
Specificity is one of the main forces at work when the browser decides how CSS affects the page. The more specific a selector is, the more importance is added ...
Two single-column indexes vs one two-column index in MySQL?
...ke:
ALTER TABLE your_table ADD INDEX (giver_id, recipient_id);
...would mean that the index could be used if a query referred to giver_id, or a combination of giver_id and recipient_id. Mind that index criteria is leftmost based - a query referring to only recipient_id would not be able to use t...
How to parse an RSS feed using JavaScript?
...e.log("description: " + e.description);
});
}
}
});
But that means you're relient on them being online and reachable.
Building Content
Once you've successfully extracted the information you need from the feed, you could create DocumentFragments (with document.createDocumentFragment...
Why is 'false' used after this simple addEventListener function?
...en bubbles up . This behavior is standartized in W3C specification.
which means no matter what you set the useCapture to, these two event phases always exist.
This picture shows how it works.
According to this model, the event:
Captures down - through 1 -> 2 -> 3.
Bubbles up - through 3 -&g...
1052: Column 'id' in field list is ambiguous
...SQL generates one that is the same as the table name. To better see what I mean, change your FROM clause ...FROM tbl_names tbl_names, tbl_section tbl_section WHERE... - that is what the parser is doing to generate a range variable.
– onedaywhen
Jul 2 '18 at 12:...
The term “Context” in programming? [closed]
...e more question was brought to mind, when talking about context-menus, the meaning of context as I learned from this answer does not make sense in my head. As I understand now context is (short) for carry state about something. So, what does it mean when using the word "context" in this way?
...
What is an xs:NCName type and when should it be used?
...L Schema regular expression [\i-[:]][\c-[:]]*
...and what does that regex mean?
\i and \c are multi-character escapes defined in XML Schema definition.
http://www.w3.org/TR/xmlschema-2/#dt-ccesN
\i is the escape for the set of initial XML name characters and \c is the set of XML name characters. ...
Hidden Features of MySQL
...ion" values, among read_buffer_size, read_rnd_buffer_size and some others, meaning that this value might be needed for each connection. So, consider your load and available resource when setting these parameters. For example sort_buffer_size is allocated only if MySQL needs to do a sort. Note: be ca...
What is the difference between OpenID and SAML?
...nd this information can be trusted, just because of the trust relation. It means that you tend to believe that the Id Provider somehow validated all the information and you can trust it at the application level. If users come with SAML tokens issued by an unknown provider, your application just refu...
How to launch Safari and open URL from iOS app
... answered Mar 8 '15 at 17:37
meaning-mattersmeaning-matters
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