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Please explain about insertable=false and updatable=false in reference to the JPA @Column annotation
...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?
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FYI, containers rotate about their center point, in case you're having trouble getting exactly the transformation you want.
– Nick Larsen
Jul 21 '14 at 14:06
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Android - custom UI with custom attributes
...t="dimension"/>
</declare-styleable>
</resources>
Basically you have to set up one <declare-styleable /> for your view that contains all your custom attributes (here just one). I never found a full list of possible types, so you need to look at the source for one I guess. ...
remove all variables except functions
I have loaded in a R console different type of objects.
I can remove them all using
5 Answers
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e.printStackTrace equivalent in python
....print_exc()
When doing this inside an except ...: block it will automatically use the current exception. See http://docs.python.org/library/traceback.html for more information.
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How to use ArgumentCaptor for stubbing?
...thing(SomeClass arg);
Mockito documentation says that you should not use captor in this way:
when(someObject.doSomething(argumentCaptor.capture())).thenReturn(true);
assertThat(argumentCaptor.getValue(), equalTo(expected));
Because you can just use matcher during stubbing:
when(someObject.doS...
Most efficient way to concatenate strings in JavaScript?
...ting a dynamic array where I keep adding strings to it and then do a join. Can anyone explain and give an example of the fastest way to do this?
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How to find a table having a specific column in postgresql
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you can query system catalogs:
select c.relname
from pg_class as c
inner join pg_attribute as a on a.attrelid = c.oid
where a.attname = <column name> and c.relkind = 'r'
sql fiddle demo
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Proper use of errors
...encing" in JS?). That leaves Range and Type, but there are limitless other categories of errors that could occur in your code. Range answers the OP's specific question but it's the exception (sorry), not the rule.
– Coderer
Sep 14 at 12:09
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Why do I get a warning every time I use malloc?
...hinks you want to define your own function named malloc and it warns you because:
You don't explicitly declare it and
There already is a built-in function by that name which has a different signature than the one that was implicitly declared (when a function is declared implicitly, its return and ...