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Selecting element by data attribute
...e? For example, select all anchors that has data attribute named customerID which has value of 22 .
11 Answers
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onCreateOptionsMenu inside Fragments
I have placed setHasOptionsMenu(true) inside onCreateView , but I still can't call onCreateOptionsMenu inside fragments.
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Read Excel File in Python
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from xlrd import open_workbook
class Arm(object):
def __init__(self, id, dsp_name, dsp_code, hub_code, pin_code, pptl):
self.id = id
self.dsp_name = dsp_name
self.dsp_code = dsp_code
self.hub_code = hub_code
self.pin_code = pin_code
self.pptl = p...
NullPointerException accessing views in onCreate()
...tion is to move the code to the fragment onCreateView(), calling findViewById() on the inflated fragment layout rootView:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, cont...
SVG gradient using CSS
... shape-rendering: crispEdges;
fill: url(#MyGradient);
}
<svg width="100" height="50" version="1.1" xmlns="http://www.w3.org/2000/svg">
<style type="text/css">
rect{fill:url(#MyGradient)}
</style>
<defs>
<linearGradient id="M...
Insert, on duplicate update in PostgreSQL?
...ause. with the following syntax (similar to MySQL)
INSERT INTO the_table (id, column_1, column_2)
VALUES (1, 'A', 'X'), (2, 'B', 'Y'), (3, 'C', 'Z')
ON CONFLICT (id) DO UPDATE
SET column_1 = excluded.column_1,
column_2 = excluded.column_2;
Searching postgresql's email group archives ...
What is href=“#” and why is it used?
...location.
Hash:
A hash - # within a hyperlink specifies an html element id to which the window should be scrolled.
href="#some-id" would scroll to an element on the current page such as <div id="some-id">.
href="//site.com/#some-id" would go to site.com and scroll to the id on that page...
CORS - What is the motivation behind introducing preflight requests?
...rticular server at a particular time?
Opinions differ.
Well, at the very least browsers will cache the preflight for a single URL?
Yes. Though probably not for very long. In WebKit browsers the maximum preflight cache time is currently 10 minutes.
Sigh. Well, if I know that my servers are CORS-a...
Laravel Eloquent: How to get only certain columns from joined tables
... function user() {
return $this->belongs_to('User')->select(array('id', 'username'));
}
And don't forget to include the column you're joining on.
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How to scroll up or down the page to an anchor using jQuery?
I'm looking for a way to include a slide effect for when you click a link to a local anchor either up or down the page.
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