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Reorder levels of a factor without changing order of values

... works on one dataset, not on another. On the other dataset, it throws an error "Error in tapply(X = X, INDEX = x, FUN = FUN, ...) : argument "X" is missing, with no default". Not sure what the solution to this problem is. I can't find any relevant difference between the datasets. ...
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MIN and MAX in C

...f the correct type. If the type is not supported, there will be a compiler error. If either x or y is not of the correct type, there will be a compiler error in the ENSURE_ macros. More such macros can be added if more types are supported. I've assumed that only arithmetic types (integers, floats, ...
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How to escape indicator characters (i.e. : or - ) in YAML

... Well, it would be much cooler to have an error-proof document, just like markdown, so the non-tech guys of the team can edit it (Eg. locale files in Rails) without any risk of breaking it! – Augustin Riedinger Jan 28 '15 at 11:...
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MySQL: Enable LOAD DATA LOCAL INFILE

...he SET GLOBAL local_infile = true; command but I am still getting the same error ERROR 1148 (42000): The used command is not allowed with this MySQL version but connection to mysql with --load-infile=1 worked mysql --local-infile=1 -u root -p – Junior May 4 '19...
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Simple C example of doing an HTTP POST and consuming the response

...nder of the message. What I did not do in this sample is any sort of real error checking - when something fails I just exit the program. Let me know if it works for you: #include <stdio.h> /* printf, sprintf */ #include <stdlib.h> /* exit */ #include <unistd.h> /* read, write, c...
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How can I update npm on Windows?

...he instruction, but when running "npm-windows-upgrade" I get the following error: npm-windows-upgrade : The term 'npm-windows-upgrade' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the pat...
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How to discard local commits in Git?

...h -D master was not necessary though, since as pointed out it generates an error. – Alexis Wilke Jun 3 '14 at 21:18 add a comment  |  ...
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How to see query history in SQL Server Management Studio

Is the query history stored in some log files? If yes, can you tell me how to find their location? If not, can you give me any advice on how to see it? ...
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What is the difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout?

...eeds SqlCommand.CommandTimeout, then it stops execution. A command timeout error will occur. SqlConnection.ConnectionTimeout = timeout limit for your connection. Means, how much time your connection object can try to connect. If it exceeds the specified time, it stops connecting. A connection timeo...
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Please enter a commit message to explain why this merge is necessary, especially if it merges an upd

I am using Git. I did a pull from a remote repo and got an error message: 8 Answers 8 ...