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What does rake db:test:prepare actually do?

I am following the rails tutorial videos and I can't figure out what the db:test:prepare command actually does. Can someone provide an explanation? ...
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Appending to an empty DataFrame in Pandas?

Is it possible to append to an empty data frame that doesn't contain any indices or columns? 3 Answers ...
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Where in an Eclipse workspace is the list of projects stored?

I use Eclipse with "external" projects - i.e. projects created from existing source. 6 Answers ...
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Gson custom seralizer for one variable (of many) in an object using TypeAdapter

I've seen plenty of simple examples of using a custom TypeAdapter. The most helpful has been Class TypeAdapter<T> . But that hasn't answered my question yet. ...
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Is it safe to delete an object property while iterating over them?

When iterating over an object's properties, is it safe to delete them while in a for-in loop? 2 Answers ...
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Can git operate in “silent mode”?

Is it possible to execute any git command in "silent" mode? For instance, can i say " git push origin " and see nothing displayed on the screen? ...
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SQL Server Management Studio SSMS tries to “save to file” instead of execute on F5

This happens intermittently and seems to be related to accidentally hitting a key. 2 Answers ...
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@Column(s) not allowed on a @ManyToOne property

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$apply vs $digest in directive testing

If I have a directive that responds to the status of a particular attribute on the scope, and I want to change that attribute in my test and verify that it responds correctly, which is the best way of doing that change? ...
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Is #pragma once part of the C++11 standard?

Traditionally, the standard and portable way to avoid multiple header inclusions in C++ was/is to use the #ifndef - #define - #endif pre-compiler directives scheme also called macro-guard scheme (see code snippet below). ...