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Getting exact error type in from DbValidationException
... situation where I'm initializing my model in DatabaseInitializer() for EF 4.1 and get this annoying error "Validation failed for one or more entities. See 'EntityValidationErrors' property for more details." So, I go to this EntityValidationErrors and there is a field {System.Data.Entity.Validat...
How do I create an immutable Class?
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answered Dec 9 '08 at 11:47
Blair ConradBlair Conrad
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How can I do division with variables in a Linux shell?
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edited Aug 7 '13 at 3:04
answered Aug 7 '13 at 2:59
padd...
Why does Assert.AreEqual(T obj1, Tobj2) fail with identical byte arrays
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edited Apr 28 '14 at 13:02
answered Sep 3 '09 at 18:36
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How to switch back to 'master' with git?
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249
You need to checkout the branch:
git checkout master
See the Git cheat sheets for more infor...
How to make the 'cut' command treat same sequental delimiters as one?
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Try:
tr -s ' ' <text.txt | cut -d ' ' -f4
From the tr man page:
-s, --squeeze-repeats replace each input sequence of a repeated character
that is listed in SET1 with a single occurrence
of that character
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Turn a simple socket into an SSL socket
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4 Answers
4
Active
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Rails where condition using NOT NIL
...h Rails 3:
Foo.includes(:bar).where("bars.id IS NOT NULL")
ActiveRecord 4.0 and above adds where.not so you can do this:
Foo.includes(:bar).where.not('bars.id' => nil)
Foo.includes(:bar).where.not(bars: { id: nil })
When working with scopes between tables, I prefer to leverage merge so that...
Telling gcc directly to link a library statically
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194
It is possible of course, use -l: instead of -l. For example -l:libXYZ.a to link with libXYZ.a. ...