大约有 42,000 项符合查询结果（耗时：0.0411秒） [XML]
jQuery `.is(“:visible”)` not working in Chrome
...t definition of what is visible than many developers:
Elements are considered visible if they consume space in the document.
Visible elements have a width or height that is greater than zero.
In other words, an element must have a non-zero width and height to consume space and be visible.
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Calendar.getInstance(TimeZone.getTimeZone(“UTC”)) is not returning UTC time
... print the Date in the desired timezone.
EDIT: Courtesy of @Laurynas, consider this:
TimeZone timeZone = TimeZone.getTimeZone("UTC");
Calendar calendar = Calendar.getInstance(timeZone);
SimpleDateFormat simpleDateFormat =
new SimpleDateFormat("EE MMM dd HH:mm:ss zzz yyyy", Locale.US);
simp...
Picking a random element from a set
...le element and the data is stored in a HashSet.
– David Nehme
Sep 25 '08 at 2:00
8
@David Nehme: ...
Is it possible to update a localized storyboard's strings?
...e
Visit for more info: https://conyac.cc/business/columns/localization_guide_ios
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Splitting string into multiple rows in Oracle
...i can you please clarify me why the above query gives duplicate rows if i didn't use distinct keyword in query
– Jagadeesh G
Sep 12 '13 at 16:50
2
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Rails: where does the infamous “current_user” come from?
...
It is defined by several gems, e.g. Devise
You'll need to store the user_id somewhere, usually in the session after logging in. It also assumes your app has and needs users, authentication, etc.
Typically, it's something like:
class ApplicationController < ActionController::Base
def current...
WHERE vs HAVING
...level aliases in GROUP BY, ORDER BY and HAVING.
And are there any downsides instead of doing "WHERE 1" (writing the whole definition instead of a column name)
If your calculated expression does not contain any aggregates, putting it into the WHERE clause will most probably be more efficient.
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MySQL Error 1215: Cannot add foreign key constraint
... I've tried to search for the answer here, but everything I've found has said to either set the db engine to Innodb or to make sure the keys I'm trying to use as a foreign key are primary keys in their own tables. I have done both of these things, if I'm not mistaken. Any other help you guys could...
Uniq by object attribute in Ruby
...
Use Array#uniq with a block:
@photos = @photos.uniq { |p| p.album_id }
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CSS: How to have position:absolute div inside a position:relative div not be cropped by an overflow:
...ext/css">
/* Positioning */
#box1 { overflow: hidden }
#box2 { position: absolute }
#box3 { position: absolute; top: 10px }
/* Styling */
#box1 { background: #efe; padding: 5px; width: 125px }
#box2 { background...