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Non-static method requires a target

...rties. If there are Foreign Key references (Navigation Properties) between tables and you use those references in your lambda (e.g. ProductDetail.Products.ID) then that "Products" context remains null if you manually created the Entity. ...
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Best way to create custom config options for my Rails app?

...ral application configuration that doesn't need to be stored in a database table, I like to create a config.yml file within the config directory. For your example, it might look like this: defaults: &defaults audiocast_uri_format: http://blablalba/blabbitybla/yadda development: <<: *...
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CKEditor automatically strips classes from div

...le'; To be a bit more complex: config.extraAllowedContent = 'span;ul;li;table;td;style;*[id];*(*);*{*}'; Hope it's a better solution... share | improve this answer | fol...
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How to get the client IP address in PHP [duplicate]

...se addresses are larger than the older IPv4 addresses. (Note that IPv6 usually uses 39 characters at most but there is also a special IPv6 notation for IPv4 addresses which in its full form can be up to 45 characters. So if you know what you are doing you can use 39 characters, but if you just want...
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How does deriving work in Haskell?

Algebraic Data Types (ADTs) in Haskell can automatically become instances of some typeclasse s (like Show , Eq ) by deriving from them. ...
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Resolve build errors due to circular dependency amongst classes

...ember that the .cc and not the .h is the unit of compilation), you need to allocate space for object A. So, well, how much space then? Enough to store B! What's the size of B then? Enough to store A! Oops. Clearly a circular reference that you must break. You can break it by allowing the compiler ...
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Replace None with NaN in pandas dataframe

I have table x : 5 Answers 5 ...
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Why doesn't Python have a sign function?

... it wasn't accepted, because they didn't agree on what it should return in all the edge cases (+/-0, +/-nan, etc) So they decided to implement only copysign, which (although more verbose) can be used to delegate to the end user the desired behavior for edge cases - which sometimes might require the...
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In what areas might the use of F# be more appropriate than C#? [closed]

... sweet spot for the language within enterprise software, namely algorithmically complex analysis of large data sets. My experience has been a very positive one. In particular: Units of measure The industry I work in is littered with units. The equations I implemented (often of a geometric nature) d...
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CSS: Set a background color which is 50% of the width of the window

... Thanks, it helped me to achieve this effect on a table: jsfiddle.net/c9kp2pde – user2015707 Apr 22 '15 at 15:54 12 ...