大约有 44,000 项符合查询结果（耗时：0.0495秒） [XML]
Cleanest way to build an SQL string in Java
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This one is outdated now, as per wikipedia.
– Zeus
Oct 5 '15 at 17:07
1
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Designing function f(f(n)) == -n
...n and odd numbers, I should've thought of that.
– Unknown
Apr 8 '09 at 22:25
38
I think the most ...
Override browser form-filling and input highlighting with HTML/CSS
I have 2 basic forms -- sign in and sign up, both on the same page. Now, I have no problem with the sign in form auto-filling, but the sign up form auto fills as well, and I don't like it.
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Generating PDF files with JavaScript
...uestion before I started writing it and thought I'd come back and let you know :)
Generate PDFs in Javascript
Example create a "Hello World" PDF file.
// Default export is a4 paper, portrait, using milimeters for units
var doc = new jsPDF()
doc.text('Hello world!', 10, 10)
doc.save('a4.p...
How to get a Fragment to remove itself, i.e. its equivalent of finish()?
I'm converting an app to use fragments using the compatibility library.
Now currently I have a number of activities (A B C D) which chain onto one another, D has a button 'OK' which when pressed calls finish which then bubbles up through onActivityResult() to additionally destroy C and B.
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How to randomly select rows in SQL?
...problem where you are working with a large result set (not the question I know).
Selecting Rows Randomly from a Large Table
http://msdn.microsoft.com/en-us/library/cc441928.aspx
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How to sort by two fields in Java?
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return x1.compareTo(x2);
}});
}
List<Persons> is now sorted by name, then by age.
String.compareTo "Compares two strings lexicographically" - from the docs.
Collections.sort is a static method in the native Collections library. It does the actual sorting, you just need to...
Reading specific lines only
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linecache now appears to only work for python source files
– Paul H
Oct 11 '17 at 17:32
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PDO closing connection
... objects during runtime. PHP is a request based language (as you probably know) so killing a potentially persistent connection to the dB will likely result in unexpected errors/issues for users. The use case you link to is likely the result in the driver keeping the persistent connection open to be ...
How to add default value for html ? [closed]
...swer, your answer will be legit. You are right that this is about lack of knowledge, but people looking for this answer do lack this knowledge.
– Qwerty
Jan 24 '17 at 10:23
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