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Web Service vs WCF Service

...With it, you can communicate using Peer to Peer, Named Pipes, Web Services and so on. You can’t compare them because WCF is a framework for building interoperable applications. If you like, you can think of it as a SOA enabler. What does this mean? Well, WCF conforms to something known as ABC, w...
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How to choose the right bean scope?

... represents the scope (the lifetime) of the bean. This is easier to understand if you are familiar with "under the covers" working of a basic servlet web application: How do servlets work? Instantiation, sessions, shared variables and multithreading. @Request/View/Flow/Session/ApplicationScoped A @...
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What is the right way to check for a null string in Objective-C?

...wing warning: comparison of distinct Objective-C types 'struct NSNull *' and 'struct NSString *' lacks a cast Is there any way of removing this (I dunno if things have changed since this question was asked)? – thebossman Dec 2 '10 at 1:40 ...
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List all tables in postgresql information_schema

...asterisk).(asterisk) thing, sorry. I just ran the select query in postgres and it listed information about all the tables in it. Try running the select statement (on your blank db) and see what it returns. – RodeoClown Feb 16 '10 at 22:15 ...
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Argparse optional positional arguments?

...arguments: dir optional arguments: -h, --help show this help message and exit -v share | improve this answer | follow | ...
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How do I run all Python unit tests in a directory?

... that will, you guessed it, run all files in the aforementioned test form and return the result. I have tried two methods so far; both have failed. I will show the two methods, and I hope someone out there knows how to actually do this correctly. ...
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Change the selected value of a drop-down list with jQuery

...s: [jQuery.val] checks, or selects, all the radio buttons, checkboxes, and select options that match the set of values. This behavior is in jQuery versions 1.2 and above. You most likely want this: $("._statusDDL").val('2'); ...
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What's the difference setting Embed Interop Types true and false in Visual Studio?

...ou actually use in code. Read more in Scott Hanselman's blog post about it and other VS improvements here. As for whether it is advised or not, I'm not sure as I don't need to use this feature. A quick web search yields a few leads: Check your Embed Interop Types flag when doing Visual Studio exten...
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How to define object in array in Mongoose schema correctly with 2d geo index

...ay , "default" : [] } In the second case during insertion make the object and push it into the array like db.update({'Searching criteria goes here'}, { $push : { trk : { "lat": 50.3293714, "lng": 6.9389939 } //inserted data is the object to be inserted ...
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ModelState.IsValid == false, why?

... About "can it be that 0 errors and IsValid == false": here's MVC source code from https://github.com/Microsoft/referencesource/blob/master/System.Web/ModelBinding/ModelStateDictionary.cs#L37-L41 public bool IsValid { get { return Values.All(mo...