1 files changed, 74 insertions, 0 deletions
diff --git a/io/matrix.io b/io/matrix.io
new file mode 100644
index 0000000..3352c67
--- /dev/null
+++ b/io/matrix.io
@@ -0,0 +1,74 @@
+Matrix := List clone
+Matrix dim := method(x, y,
+	m := Matrix clone
+	x repeat (
+		l := List clone
+		l setSize(y)
+		m append(l)
+	)
+	return m
+)
+
+Matrix set := method(x, y, e,
+	self at(x) atPut(y, e)
+)
+
+Matrix get := method(x, y,
+	self at(x) at(y)
+)
+
+Matrix xysize := method(
+	result := List clone
+	result append(self size)
+	result append(self at(0) size)
+	return result
+)
+
+Matrix transpose := method(
+	dims := self xysize
+	m := Matrix dim(dims at(1), dims at(0))
+
+	for (x, 0, dims at(0) -1,
+		for (y, 0, dims at(1) -1,
+			m set(y, x, self get (x, y))
+		)
+	)
+
+	return m
+)
+
+Matrix toFile := method(fname,
+	f := File with(fname)
+	f remove
+	f openForUpdating
+	f write(self serialized)
+	f close
+	return self
+)
+
+Matrix fromFile := method(fname,
+	m := doFile(fname)
+	return m
+)
+
+
+
+m1 := Matrix dim(2,3)
+
+m1 set(0,0,0)
+m1 set(0,1,1)
+m1 set(0,2,2)
+m1 set(1,0,3)
+m1 set(1,1,4)
+m1 set(1,2,5)
+
+writeln("m1: ", m1)
+
+m2 := m1 transpose
+writeln("m2: ", m2)
+
+if (m1 == m2 transpose, "Equals!", "Not equals!") println
+
+m1 toFile("m1.txt")
+m3 := Matrix fromFile("m1.txt")
+writeln("m3 (serialized from m1): ", m3)