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How to create empty data frame with column names specified in R? [duplicate]
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why does z convert to Factor?
– pssguy
Jul 21 '13 at 19:29
6
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When restoring a backup, how do I disconnect all active connections?
... multiuser
mode. If error occurs please execute following command it will convert
database in multi user.*/
ALTER DATABASE YourDB SET MULTI_USER
GO
Reference : Pinal Dave (http://blog.SQLAuthority.com)
Official reference: https://msdn.microsoft.com/en-us/library/ms345598.aspx
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Is Fortran easier to optimize than C for heavy calculations?
...t heavily use c++ for their high performance modeling. Additionally Sandia converted one of their modeling software (LAMMPS) over from fortran to c++ adding in a number of awesome enhancements.
– Zachary Kraus
Sep 9 '15 at 3:46
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What's invokedynamic and how do I use it?
...ions on the types of values supplied to its operations (e.g. Java)
Weak - converts (casts) arguments of an operation if those arguments have incompatible types (e.g. Visual Basic)
Knowing that Java is a Statically and Weakly typed, how do you implement Dynamically and Strongly typed languages on t...
Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
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slot.get will then throw an error at runtime as it was unsuccessful in converting an Animal to Dog (duh!).
In general mutability doesn't go well with co-variance and contra-variance. That is the reason why all Java collections are invariant.
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What techniques can be used to speed up C++ compilation times?
...older. To visualize these traces, you can use the Templight Tools that can convert these to other formats. Follow these instructions to install templight-convert. We usually use the callgrind output. You can also use the GraphViz output if your project is small:
$ templight-convert --format callgrin...
This Handler class should be static or leaks might occur: IncomingHandler
...the whole point. Unless he has some ultra cool compiler that automatically converts inner classes to static classes when they don't use class variables.
– Sogger
Jan 7 '15 at 18:22
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how to File.listFiles in alphabetical order?
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-1 I really don't understand the advantage of converting the file array to a string array and then sorting rather than just sorting the file array as the accepted answer does.
– zelanix
Feb 17 '14 at 21:49
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insert multiple rows via a php array into mysql
...duct of a 1400 by 1400 set of int values many of which are zero. I need to convert that to a many to many relationship using an intermediary table to save space hence the need for inserts as opposed to a bulk insert
– toofarsideways
Apr 23 '09 at 2:26
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Can a C++ enum class have methods?
...an have methods (see here for the restrictions!).
I have a sample, how to convert bit mask values (as shown above) to their corresponding bit indices, that can be used along a std::bitset here: BitIndexConverter.hpp
I've found this pretty useful for enhancing readability of some 'flag' decison base...