1 files changed, 48 insertions, 0 deletions
diff --git a/tests/matrix/tmatrix.nim b/tests/matrix/tmatrix.nim
new file mode 100644
index 000000000..90dfde959
--- /dev/null
+++ b/tests/matrix/tmatrix.nim
@@ -0,0 +1,48 @@
+discard """
+  file: "tmatrix.nim"
+  output: "111"
+"""
+# Test overloading of [] with multiple indices
+
+type
+  TMatrix* = object
+    data: seq[float]
+    fWidth, fHeight: int
+
+template `|`(x, y: int): expr = y * m.fWidth + x
+
+proc createMatrix*(width, height: int): TMatrix = 
+  result.fWidth = width
+  result.fHeight = height
+  newSeq(result.data, width*height)
+
+proc width*(m: TMatrix): int {.inline.} = return m.fWidth
+proc height*(m: TMatrix): int {.inline.} = return m.fHeight
+
+proc `[]`*(m: TMatrix, x, y: int): float {.inline.} =
+  result = m.data[x|y]
+
+proc `[]=`*(m: var TMatrix, x, y: int, val: float) {.inline.} =
+  m.data[x|y] = val
+  
+proc `-|`*(m: TMatrix): TMatrix =
+  ## transposes a matrix
+  result = createMatrix(m.height, m.width)
+  for x in 0..m.width-1:
+    for y in 0..m.height-1: result[y,x] = m[x,y]
+
+#m.row(0, 2) # select row
+#m.col(0, 89) # select column
+
+const
+  w = 3
+  h = 20
+
+var m = createMatrix(w, h)
+for i in 0..w-1:
+  m[i, i] = 1.0
+
+for i in 0..w-1:
+  stdout.write(m[i,i]) #OUT 111
+
+