[R] where does the null come from?

Wacek Kusnierczyk Waclaw.Marcin.Kusnierczyk at idi.ntnu.no
Wed May 13 11:23:58 CEST 2009


    m = matrix(1:4, 2)

    apply(m, 1, cat, '\n')
    # 1 2
    # 3 4
    # NULL

why the null?

vQ




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