大约有 18,400 项符合查询结果(耗时:0.0355秒) [XML]

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How to draw rounded rectangle in Android UI?

I need to draw a rounded rectangle in the Android UI. Having the same rounded rectangle for TextView and EditText would also be helpful. ...
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MySQL order by before group by

...desc If you have the following sample data: CREATE TABLE wp_posts (`id` int, `title` varchar(6), `post_date` datetime, `post_author` varchar(3)) ; INSERT INTO wp_posts (`id`, `title`, `post_date`, `post_author`) VALUES (1, 'Title1', '2013-01-01 00:00:00', 'Jim'), (2, 'Title2', '2...
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“Single-page” JS websites and SEO

... While #2 might be "easier" for you as a developer, it only provides search engine crawling. And yes, if Google finds out your serving different content, you might be penalized (I'm not an expert on that, but I have heard of it happening). Both SEO and accessibility (not just for disable...
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Email validation using jQuery

I'm new to jQuery and was wondering how to use it to validate email addresses. 35 Answers ...
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Canvas width and height in HTML5

Is it possible to fix the width and height of an HTML5 canvas element? 4 Answers 4 ...
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Check if element exists in jQuery [duplicate]

...an element exists if the element is created by .append() method? $('elemId').length doesn't work for me. 8 Answers ...
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How to drop a table if it exists?

...le does not exist). Instead, for a permanent table you can use IF OBJECT_ID('dbo.Scores', 'U') IS NOT NULL DROP TABLE dbo.Scores; Or, for a temporary table you can use IF OBJECT_ID('tempdb.dbo.#T', 'U') IS NOT NULL DROP TABLE #T; SQL Server 2016+ has a better way, using DROP TABLE IF E...
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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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How do I use the conditional operator (? :) in Ruby?

...some extra junk after it), but they are not required in the last case as said issue does not arise. You can use the "long-if" form for readability on multiple lines: question = if question.size > 20 then question.slice(0, 20) + "..." else question end ...
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Is it possible to use argsort in descending order?

Consider the following code: 9 Answers 9 ...