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author | Eugene Burmako <xeno.by@gmail.com> | 2012-04-22 18:49:09 +0200 |
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committer | Eugene Burmako <xeno.by@gmail.com> | 2012-04-23 17:55:26 +0200 |
commit | f54e5c8bbdd719b5c9375c64c2f66b841984456e (patch) | |
tree | 975475778e6102c8f2dbbff0f25a2f114204cbbb /test/files/run/t0421-old.scala | |
parent | 0f0144c74088e396fc1440166bed5a7c6d5f44f4 (diff) | |
download | scala-f54e5c8bbdd719b5c9375c64c2f66b841984456e.tar.gz scala-f54e5c8bbdd719b5c9375c64c2f66b841984456e.tar.bz2 scala-f54e5c8bbdd719b5c9375c64c2f66b841984456e.zip |
resurrects manifests in their pre-2.10 glory
Diffstat (limited to 'test/files/run/t0421-old.scala')
-rw-r--r-- | test/files/run/t0421-old.scala | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/test/files/run/t0421-old.scala b/test/files/run/t0421-old.scala new file mode 100644 index 0000000000..8d51013924 --- /dev/null +++ b/test/files/run/t0421-old.scala @@ -0,0 +1,30 @@ +// ticket #421 +object Test extends App { + + def transpose[A: ClassManifest](xss: Array[Array[A]]) = { + for (i <- Array.range(0, xss(0).length)) yield + for (xs <- xss) yield xs(i) + } + + def scalprod(xs: Array[Double], ys: Array[Double]) = { + var acc = 0.0 + for ((x, y) <- xs zip ys) acc = acc + x * y + acc + } + + def matmul(xss: Array[Array[Double]], yss: Array[Array[Double]]) = { + val ysst = transpose(yss) + val ysst1: Array[Array[Double]] = yss.transpose + assert(ysst.deep == ysst1.deep) + for (xs <- xss) yield + for (yst <- ysst) yield + scalprod(xs, yst) + } + + val a1 = Array(Array(0, 2, 4), Array(1, 3, 5)) + println(transpose(a1).deep.mkString("[", ",", "]")) + + println(matmul(Array(Array(2, 3)), Array(Array(5), Array(7))).deep.mkString("[", ",", "]")) + + println(matmul(Array(Array(4)), Array(Array(6, 8))).deep.mkString("[", ",", "]")) +} |