add generic extract methods

Author: abhinavmehndiratta

src/Operations/Extract.jl

@@ -1,3 +1,22 @@
+"""
+    GrB_extract(arg1, Mask, accum, arg4, ...)
+
+Generic matrix/vector extraction.
+"""
+function GrB_extract(arg1, Mask, accum, arg4, args...)
+    T = typeof(arg1)
+    U = typeof(arg4)
+    if T <: GrB_Vector
+        if U <: GrB_Vector
+            return GrB_Vector_extract(arg1, Mask, accum, arg4, args...)
+        elseif U <: GrB_Matrix
+            return GrB_Col_extract(arg1, Mask, accum, arg4, args...)
+        end
+    elseif T <: GrB_Matrix
+        return GrB_Matrix_extract(arg1, Mask, accum, arg4, args...)
+    end
+end
+
 """
     GrB_Vector_extract(w, mask, accum, u, I, ni, desc)
 

src/SuiteSparseGraphBLAS.jl

@@ -189,7 +189,7 @@ GrB_eWiseAdd_Matrix_Semiring, GrB_eWiseAdd_Matrix_Monoid, GrB_eWiseAdd_Matrix_Bi
 GrB_eWiseAdd,
 
 # Extract
-GrB_Vector_extract, GrB_Matrix_extract, GrB_Col_extract,
+GrB_extract, GrB_Vector_extract, GrB_Matrix_extract, GrB_Col_extract,
 
 # Apply
 GrB_apply, GrB_Vector_apply, GrB_Matrix_apply,