diff --git a/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/LinearAlgebraBenchmark.kt b/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/LinearAlgebraBenchmark.kt
index b54cff926..2ebfee2e7 100644
--- a/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/LinearAlgebraBenchmark.kt
+++ b/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/LinearAlgebraBenchmark.kt
@@ -10,7 +10,6 @@ import kscience.kmath.linear.Matrix
 import kscience.kmath.linear.MatrixContext
 import kscience.kmath.linear.inverseWithLup
 import kscience.kmath.linear.real
-import kscience.kmath.operations.invoke
 import org.openjdk.jmh.annotations.Scope
 import org.openjdk.jmh.annotations.State
 import kotlin.random.Random
@@ -34,14 +33,14 @@ internal class LinearAlgebraBenchmark {
 
     @Benchmark
     fun cmLUPInversion() {
-        CMMatrixContext {
+        with(CMMatrixContext) {
             inverse(matrix)
         }
     }
 
     @Benchmark
     fun ejmlInverse() {
-        EjmlMatrixContext {
+        with(EjmlMatrixContext) {
             inverse(matrix)
         }
     }
diff --git a/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/NDFieldBenchmark.kt b/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/NDFieldBenchmark.kt
index 5f7559d02..caebf0497 100644
--- a/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/NDFieldBenchmark.kt
+++ b/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/NDFieldBenchmark.kt
@@ -2,7 +2,6 @@ package kscience.kmath.benchmarks
 
 import kscience.kmath.nd.*
 import kscience.kmath.operations.RealField
-import kscience.kmath.operations.invoke
 import kscience.kmath.structures.Buffer
 import org.openjdk.jmh.annotations.Benchmark
 import org.openjdk.jmh.annotations.Scope
@@ -12,7 +11,7 @@ import org.openjdk.jmh.annotations.State
 internal class NDFieldBenchmark {
     @Benchmark
     fun autoFieldAdd() {
-        autoField {
+        with(autoField) {
             var res: NDStructure<Double> = one
             repeat(n) { res += one }
         }
@@ -20,7 +19,7 @@ internal class NDFieldBenchmark {
 
     @Benchmark
     fun specializedFieldAdd() {
-        specializedField {
+        with(specializedField) {
             var res: NDStructure<Double> = one
             repeat(n) { res += 1.0 }
         }
@@ -29,7 +28,7 @@ internal class NDFieldBenchmark {
 
     @Benchmark
     fun boxingFieldAdd() {
-        genericField {
+        with(genericField) {
             var res: NDStructure<Double> = one
             repeat(n) { res += 1.0 }
         }
diff --git a/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/ViktorBenchmark.kt b/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/ViktorBenchmark.kt
index 5cf6c2ab8..3f08481b3 100644
--- a/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/ViktorBenchmark.kt
+++ b/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/ViktorBenchmark.kt
@@ -2,7 +2,6 @@ package kscience.kmath.benchmarks
 
 import kscience.kmath.nd.*
 import kscience.kmath.operations.RealField
-import kscience.kmath.operations.invoke
 import kscience.kmath.viktor.ViktorNDField
 import org.jetbrains.bio.viktor.F64Array
 import org.openjdk.jmh.annotations.Benchmark
@@ -21,7 +20,7 @@ internal class ViktorBenchmark {
 
     @Benchmark
     fun automaticFieldAddition() {
-        autoField {
+        with(autoField) {
             var res: NDStructure<Double> = one
             repeat(n) { res += 1.0 }
         }
@@ -29,7 +28,7 @@ internal class ViktorBenchmark {
 
     @Benchmark
     fun realFieldAddition() {
-        realField {
+        with(realField) {
             var res: NDStructure<Double> = one
             repeat(n) { res += 1.0 }
         }
@@ -37,7 +36,7 @@ internal class ViktorBenchmark {
 
     @Benchmark
     fun viktorFieldAddition() {
-        viktorField {
+        with(viktorField) {
             var res = one
             repeat(n) { res += 1.0 }
         }
diff --git a/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/ViktorLogBenchmark.kt b/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/ViktorLogBenchmark.kt
index 914584b8e..57f556e9e 100644
--- a/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/ViktorLogBenchmark.kt
+++ b/examples/src/benchmarks/kotlin/kscience/kmath/benchmarks/ViktorLogBenchmark.kt
@@ -2,7 +2,6 @@ package kscience.kmath.benchmarks
 
 import kscience.kmath.nd.*
 import kscience.kmath.operations.RealField
-import kscience.kmath.operations.invoke
 import kscience.kmath.viktor.ViktorNDField
 import org.jetbrains.bio.viktor.F64Array
 import org.openjdk.jmh.annotations.Benchmark
@@ -22,7 +21,7 @@ internal class ViktorLogBenchmark {
 
     @Benchmark
     fun realFieldLog() {
-        realField {
+        with(realField) {
             val fortyTwo = produce { 42.0 }
             var res = one
             repeat(n) { res = ln(fortyTwo) }
@@ -31,7 +30,7 @@ internal class ViktorLogBenchmark {
 
     @Benchmark
     fun viktorFieldLog() {
-        viktorField {
+        with(viktorField) {
             val fortyTwo = produce { 42.0 }
             var res = one
             repeat(n) { res = ln(fortyTwo) }