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Fragment is not being replaced but put on top of the previous one

... You are doing two things wrong here: You cannot replace a fragment that is statically placed in an xml layout file. You should create a container (e.g. a FrameLayout) in the layout and then add the fragment programatically using Fra...
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MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update

as the title says, I want to perform a find (one) for a document, by _id, and if doesn't exist, have it created, then whether it was found or was created, have it returned in the callback. ...
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AJAX Mailchimp signup form integration

Is there any way to integrate mailchimp simple (one email input) with AJAX, so there is no page refresh and no redirection to default mailchimp page. ...
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How to link to a named anchor in Multimarkdown?

I have come across a number of mentions of MultiMarkdown's support for internal links / named anchors but I am unable to find a single example of how to actually do it. ...
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Javascript Equivalent to C# LINQ Select

Following this question here : 12 Answers 12 ...
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How do you determine what SQL Tables have an identity column programmatically

I want to create a list of columns in SQL Server 2005 that have identity columns and their corresponding table in T-SQL. 13...
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mysql update column with value from another table

I have two tables, both looking like 8 Answers 8 ...
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Reorder / reset auto increment primary key

I have a MySQL table with an auto increment primary key. I deleted some rows in the middle of the table. Now I have, for example, something like this in the ID column: 12, 13, 14, 19, 20. I deleted the 15, 16, 17 and 18 rows. ...
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Redis strings vs Redis hashes to represent JSON: efficiency?

I want to store a JSON payload into redis. There's really 2 ways I can do this: 3 Answers ...
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How to add a button dynamically in Android?

How to add a button dynamically in Android? 17 Answers 17 ...