009. Fortran array sections contain both endpoints

topic: Arrays

Fortran array sections contain both endpoints like Julia, Matlab and R, unlike Python.

array-sections.f90 | | |

integer, parameter :: v(3) = [10, 20, 30]

print *, v(1:2)  ! output: 10 20
print *, v(:2)   ! 10 20
print *, v(2:3)  ! 20 30
print *, v(2:)   ! 20 30
print *, v(::2)  ! 10 30 -- stride of 2

end

Output1

          10          20
          10          20
          20          30
          20          30
          10          30

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Fortran array sections contain both endpoints like Julia, Matlab and R, unlike Python.

integer, parameter :: v(3) = [10,20,30]
print*,v(1:2) ! output 10 20
print*,v(:2) ! 10 20
print*,v(2:3) ! 20 30
print*,v(2:) ! 20 30
print*,v(::2) ! 10 30 -- stride of 2

— FortranTip (@fortrantip) December 18, 2021

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Compiled using GNU Fortran (Ubuntu 11.3.0-1ubuntu1~22.04) 11.3.0 with no flags