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Please explain about insertable=false and updatable=false in reference to the JPA @Column annotation
If a field is annotated insertable=false, updatable=false , doesn't it mean that you cannot insert value nor change the existing value? Why would you want to do that?
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How to rotate the background image in the container?
I want to rotate the image which is placed in the button of scrollbar in Chrome. Now I have a CSS with this content:
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Android - custom UI with custom attributes
I know it is possible to create custom UI element (by way of View or specific UI element extension). But is it possible to define new properties or attributes to newly created UI elements (I mean not inherited, but brand new to define some specific behavior I am not able to handle with default prope...
remove all variables except functions
I have loaded in a R console different type of objects.
I can remove them all using
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How to use ArgumentCaptor for stubbing?
In Mockito documentation and javadocs it says
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Most efficient way to concatenate strings in JavaScript?
In JavaScript, I have a loop that has many iterations, and in each iteration, I am creating a huge string with many += operators. Is there a more efficient way to create a string? I was thinking about creating a dynamic array where I keep adding strings to it and then do a join. Can anyone explain...
How to find a table having a specific column in postgresql
I'm using PostgreSQL 9.1. I have the column name of a table. Is it possible to find the table(s) that has/have this column? If so, how?
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Why do I get a warning every time I use malloc?
If I use malloc in my code:
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Temporarily switch working copy to a specific Git commit
How to switch to specific Git commit without losing all the commits made after it ?
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Example for sync.WaitGroup correct?
Is this example usage of sync.WaitGroup correct? It gives the expected result, but I am unsure about the wg.Add(4) and the position of wg.Done() . Does it make sense to add the four goroutines at once with wg.Add() ?
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