LoopReverse

Metafunction

LoopReverse

Metafunction returning a function that iterates over a static integer range in reverse order.

LoopReverse<Worker, I>::run(Arg & arg)

Include Headers

seqan/basic.h

Parameters

Worker	A worker struct. It has to implement the static (and preferably finline/inline) function body that accepts two parameters. The first one will be a reference to arg, as given to run(). The second will be the current value of the iterating variable.
I	The upper limit for the iteration.
arg	The argument to be passed into the workers' body() function.

Remarks

The loop will go from I down to and including 1.

Examples

Print the values I, I - 1, ..., 2, 1.

struct PrintWorker
{
    static inline body(Nothing & arg, int I)
    {
        (void)arg;  // ignored
        printf("%d\n", I);
    }
};

Loop<PrintWorker, 10>::run(Nothing());
// This will print the numbers 1, 2, ..., 9, 10.