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public friend swap member function
...call:
using std::swap; // allow use of std::swap...
swap(x, y); // ...but select overloads, first
// that is, if swap(x, y) finds a better match, via ADL, it
// will use that instead; otherwise it falls back to std::swap
What is a friend function? There is confusion around this area.
Before C++...
Filter rows which contain a certain string
... @MySchizoBuddy: If the column name contains white space, you can select the variable using backticks. Modifying the example above: mtcars$`my type` <- rownames(mtcars) and then mtcars %>% filter(grepl('Toyota|Mazda', `my type`))
– alex23lemm
Ju...
What is the dependency inversion principle and why is it important?
...l never be able to deploy his application without the logging library John selected. If John follows the DIP, however, Sam is free to provide an adapter and use whatever logging library he chooses. The DIP isn't about convenience, but coupling.
– Derek Greer
...
Break a previous commit into multiple commits
...g git reset HEAD~, go through the patches individually using git add -p to select the ones you want in each commit
Edit the working copy to remove the changes you do not want; commit that interim state; and then pull back the full commit for the next round.
Option 2 is useful if you're splitting a...
What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and be
...s criteria, but if maturity were the only metric, I imagine you would have selected a BLAS or LAPACK based option.
– Catskul
Sep 9 '09 at 17:54
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How do I determine the size of an object in Python?
... and module Class Tracker provides off-line analysis of the lifetime of
selected Python objects.
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Is cout synchronized/thread-safe?
...cent version of MSVC (currently for VS 2010/MSVC 10/cl.exe 16.x). You can select the information for older versions of MSVC using a dropdown control on the page (and the information is different for older versions).
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Learning assembly [closed]
...y contents (in assembly language, hexadecimal or ASCII), make changes, and selectively execute COM, EXE and other file types.
It also has several subcommands which are used to access specific disk
sectors, I/O ports and memory addresses. MS-DOS Debug runs at a
16-bit process level and therefor...
How do I tell Maven to use the latest version of a dependency?
...n (will always resolve to 1.0.1 unless a collision occurs, when Maven will select a matching version):
<version>1.0.1</version>
Declare a version range for all 1.x (will currently resolve to 1.1.1):
<version>[1.0.0,2.0.0)</version>
Declare an open-ended version range (w...
Perl build, unit testing, code coverage: A complete working example
...ESS_PERL_SWITCHES}. For example: -MDevel::Cover=+ignore,.t$,+inc,/app/lib,-select,MyModule.pm where /app/lib is the application-private library and MyModule.pm is the module under test.
– Michael Carman
Apr 27 '10 at 16:33
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