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Get Substring - everything before certain char

... Some example strings are below. The length of the string before - varies and can be any length 8 Answers ...
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Hide/Show Column in an HTML Table

I have an HTML table with several columns and I need to implement a column chooser using jquery. When a user clicks on a checkbox I want to hide/show the corresponding column in the table. I would like to do this without attaching a class to every td in the table, is there a way to select an entir...
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JPA: How to have one-to-many relation of the same Entity type

... Yes, this is possible. This is a special case of the standard bidirectional @ManyToOne/@OneToMany relationship. It is special because the entity on each end of the relationship is the same. The general case is detailed in Section 2.10.2 of the JPA 2.0 spec. Here's a worked exa...
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JavaScript function order: why does it matter?

...further down the page than the call to it. However, my page is for a game, and no functions are called until the whole thing has downloaded. So why does the order functions appear in my code matter? ...
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In a git merge conflict, what are the BACKUP, BASE, LOCAL, and REMOTE files that are generated?

I assume the LOCAL and REMOTE files are just what their name suggests, but what are BASE and BACKUP for? 1 Answer ...
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Convert a PHP object to an associative array

... )), ) Typecasting this way will not do deep casting of the object graph and you need to apply the null bytes (as explained in the manual quote) to access any non-public attributes. So this works best when casting StdClass objects or objects with only public properties. For quick and dirty (what y...
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How can I select and upload multiple files with HTML and PHP, using HTTP POST?

...hat it looks like in Chrome after selecting 2 items in the file dialog: And here's what it looks like after clicking the "Upload" button. This is just a sketch of a fully working answer. See PHP Manual: Handling file uploads for more information on proper, secure handling of file uploads in PH...
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No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlClie

After downloading the EF6 by nuget and try to run my project, it returns the following error: 34 Answers ...
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Not equal != operator on NULL

... <> is Standard SQL-92; != is its equivalent. Both evaluate for values, which NULL is not -- NULL is a placeholder to say there is the absence of a value. Which is why you can only use IS NULL/IS NOT NULL as predicates for such situ...
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UINavigationBar custom back button without title

How can I customize the navigation back button in iOS 7 and above without title? (i.e. with the arrow only) 36 Answers ...