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Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?

... should remember that it is not C# source that executes but rather IL: IL_0001: ldnull IL_0002: stloc.0 // s IL_0003: ldloc.0 // s IL_0004: callvirt System.String.get_Length IL_0009: call System.Console.WriteLine It is the callvirt opcode that throws the NullReferenc...
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How can I tell Rails to use RSpec instead of test-unit when creating a new Rails app?

... I think some of those steps are out of order, no? This looks like this would work though if done in the right order. Please edit your answer and I will mark it as accepted. – aarona Jul 18 '11 at 5:13 ...
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Best practice for storing and protecting private API keys in applications [closed]

...blic and private, often also referred to as secret, key. Unfortunately, in order to connect to the services, this private key must be used to authenticate and hence, probably be part of the application. Needless to say, that this faces in immense security problem. Public and private API keys can be...
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What is the purpose of shuffling and sorting phase in the reducer in Map Reduce Programming?

...nding K1,V2 and K1,V4 to different reducers as they need to be together in order to be reduced. Tried explaining it as simply as possible share | improve this answer | follo...
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What exactly is metaprogramming?

... amusement. We were a tiny startup, programming as hard as we could in order to put technical barriers between us and our competitors. A suspicious person might begin to wonder if there was some correlation here. A big chunk of our code was doing things that are very hard to do in...
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How to get the first column of a pandas DataFrame as a Series?

... df.set_index('x').y – herrfz Jan 10 '14 at 23:44 ...
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How to Remove ReadOnly Attribute on File Using PowerShell?

... Thanks! This worked for me: dir . -r *.cs | % { $_.fullname } | % { attrib -r $_ } – Cameron Taggart Dec 7 '12 at 23:22 1 ...
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Android: failed to convert @drawable/picture into a drawable

...same thing. Also the name of the picture have been "jack", "abc", "question_mark" as you can see there are strictly in the rules of the what characters you can use, and still the error message keeps coming up. Any advice would be great on how to fix the problem, thanks. ...
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Vim - how to run a command immediately when starting vim?

...ent variables and files and sets values accordingly. Vim proceeds in this order: 1. Set the 'shell' and 'term' option *SHELL* *COMSPEC* *TERM* 2. Process the arguments 3. Execute Ex commands, from environment variables and/or files *vimrc* *exrc* 4. Load the plugin scripts. ...
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Encrypt and decrypt a string in C#?

...so too much work to alter this answer otherwise. private static byte[] _salt = __To_Do__("Add a app specific salt here"); /// <summary> /// Encrypt the given string using AES. The string can be decrypted using /// DecryptStringAES(). The sharedSecret parameters must match. ...