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Remove duplicate rows in MySQL
... add a UNIQUE index on the 3 columns. When you write the ALTER statement, include the IGNORE keyword. Like so:
ALTER IGNORE TABLE jobs
ADD UNIQUE INDEX idx_name (site_id, title, company);
This will drop all the duplicate rows. As an added benefit, future INSERTs that are duplicates will error ...
Getting value of HTML Checkbox from onclick/onchange events
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float:left; vs display:inline; vs display:inline-block; vs display:table-cell;
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How to remove the arrow from a select element in Firefox
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Where can I learn how to write C code to speed up slow R functions? [closed]
...es.
So a .Call function gets declared like this in some header file:
#include <Rcpp.h>
RcppExport SEXP foo( SEXP x1, SEXP x2 ) ;
and implemented like this in a .cpp file :
SEXP foo( SEXP x1, SEXP x2 ){
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}
There is not much more to know about the R API to be using Rcpp.
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Reason to Pass a Pointer by Reference in C++?
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