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Best way to check if object exists in Entity Framework?

What is the best way to check if an object exists in the database from a performance point of view? I'm using Entity Framework 1.0 (ASP.NET 3.5 SP1). ...
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RSpec vs Cucumber (RSpec stories) [closed]

... of course. But it still feels weird to use Cucumber. My current view on this, is that it's convenient to use Cucumber when you're implementing application for the client and do not understand how the whole system is supposed to work yet. ...
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Calculate number of hours between 2 dates in PHP

...ateTime, DateInterval, DateTimeZone and DatePeriod. The cool thing about this classes is, that it considers different timezones, leap years, leap seconds, summertime, etc. And on top of that it's very easy to use. Here's what you want with the help of this objects: // Create two new DateTime-object...
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Haskell: Lists, Arrays, Vectors, Sequences

...nd read a couple of articles regarding performance differences of Haskell lists and (insert your language)'s arrays. 1 Answ...
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Is SonarQube Replacement for Checkstyle, PMD, FindBugs?

...eb project from scratch and are looking at the following static code analysis tools. 8 Answers ...
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Multiple constructors in python? [duplicate]

Is it not possible to define multiple constructors in Python, with different signatures? If not, what's the general way of getting around it? ...
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How to find if directory exists in Python

In the os module in Python, is there a way to find if a directory exists, something like: 13 Answers ...
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Is there a string math evaluator in .NET?

... a reference to Microsoft Script Control Library (COM) and use code like this to evaluate an expression. (Also works for JScript.) Dim sc As New MSScriptControl.ScriptControl() sc.Language = "VBScript" Dim expression As String = "1 + 2 * 7" Dim result As Double = sc.Eval(expression) Edit - C# ve...
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remove_if equivalent for std::map

... it; you could potentially skip over elements that needed to be erased. This is a common algorithm I've seen used and documented in many places. [EDIT] You are correct that iterators are invalidated after an erase, but only iterators referencing the element that is erased, other iterators are stil...
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Open Source Alternatives to Reflector? [closed]

... Leppie, thanks. I'm accepting this as the answer, even though it was a tough choice between your answer and Jason Haley's. – MagicAndi Mar 13 '10 at 18:44 ...