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Input placeholders for Internet Explorer

HTML5 introduced the placeholder attribute on input elements, which allows to display a greyed-out default text. 17 Ans...
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How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?

I'm using a transaction model to keep track all the events going through the system 2 Answers ...
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The cast to value type 'Int32' failed because the materialized value is null

I have the following code. I'm getting error: 8 Answers 8 ...
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Add margin between a RadioButton and its label in Android?

...dd a little bit of space between a RadioButton and the label while still using Android's built-in components? By default the text looks a little scrunched. ...
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Difference between SelectedItem, SelectedValue and SelectedValuePath

What is the difference betweeen the following: 5 Answers 5 ...
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How does JPA orphanRemoval=true differ from the ON DELETE CASCADE DML clause

... orphanRemoval has nothing to do with ON DELETE CASCADE. orphanRemoval is an entirely ORM-specific thing. It marks "child" entity to be removed when it's no longer referenced from the "parent" entity, e.g. when you remove the child entity from the...
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How to manually set an authenticated user in Spring Security / SpringMVC

... a new user submits a 'New account' form, I want to manually log that user in so they don't have to login on the subsequent page. ...
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ORA-00054: resource busy and acquire with NOWAIT specified or timeout expired

Why am I getting this database error when I update a table? 14 Answers 14 ...
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animating addClass/removeClass with jQuery

I am using jQuery and jQuery-ui and want to animate various attributes on various objects. 6 Answers ...
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Reference: mod_rewrite, URL rewriting and “pretty links” explained

"Pretty links" is an often requested topic, but it is rarely fully explained. mod_rewrite is one way to make "pretty links", but it's complex and its syntax is very terse, hard to grok, and the documentation assumes a certain level of proficiency in HTTP. Can someone explain in simple terms how "p...