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ASP.NET MVC Conditional validation

...lidation is business logic and this interface is in the System.Web DLL. In order to use this, you have to give your business layer a dependency on a presentation technology. – NightOwl888 Jul 28 '13 at 15:45 ...
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How to represent multiple conditions in a shell if statement?

... else statement and have the code between then and fi put in a function in order to avoid repeating it. In very simple cases you could use a case statement with ;& fallthrough (in Bash 4). – Paused until further notice. Dec 11 '15 at 22:15 ...
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Create an empty data.frame

... Nice solution, however I found that I get a data frame with 0 rows. In order to keep the size of the data frame the same, I suggest new_df = df[NA,]. This also allows to store any previous column into the new data frame. For example to obtain the "Date" column from original df (while keeping res...
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ImportError: no module named win32api

...n installation for win32api and you should find win32api.pyd under ${PYTHON_HOME}\Lib\site-packages\win32. share | improve this answer | follow | ...
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How to use multiple AWS Accounts from the command line?

...y allowed to do one mention per comment so I had to add another comment in order to mention both. You are correct that your answer is a different approach but it is very helpful to know where the information is stored, in particular if you intend to copy settings between profiles. ...
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Long list of if statements in Java

... NullCommand, but you need a CommandMap that handles these corner cases in order to minimize client's checks. share | improve this answer | follow | ...
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Can I use assert on Android devices?

...rt x == 0 : "x = " + x; An alternative to the above statement is: Utils._assert(x == 0, "x = " + x); Where the method is defined as: public static void _assert(boolean condition, String message) { if (!condition) { throw new AssertionError(message); } } The Oracle java docs r...
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Which is the preferred way to concatenate a string in Python?

... If you have multiple strings (n > 10) "".join(list_of_strings) is still faster – Mikko Ohtamaa Aug 29 '12 at 5:34 11 ...
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release Selenium chromedriver.exe from memory

...nning, there are still many "chromedriver.exe" processes left running. In order to overcome that, I wrote a simple cleanup code (C#): Process[] chromeDriverProcesses = Process.GetProcessesByName("chromedriver"); foreach(var chromeDriverProcess in chromeDriverProcesses) { chromeDriverProcess...
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Should arrays be used in C++?

... often preferable to using a vector (and std::string), since it avoids all order of initialization issues; the data is pre-loaded, before any actual code can be executed. Finally, related to the above, the compiler can calculate the actual size of the array from the initializers. You don't have to ...