diff --git a/js/js.libraries/src/core/json.kt b/js/js.libraries/src/core/json.kt
index f61f1904724..fa3a36ec20a 100644
--- a/js/js.libraries/src/core/json.kt
+++ b/js/js.libraries/src/core/json.kt
@@ -15,10 +15,10 @@ library("jsonGet")
 public fun Json.get(paramName : String) : Any? = js.noImpl
 
 library("jsonFromTuples")
-public fun json(vararg pairs : Tuple2<String, Any?>) : Json = js.noImpl
+public fun json(vararg pairs : Pair<String, Any?>) : Json = js.noImpl
 
 library("jsonFromTuples")
-public fun json2(pairs : Array<Tuple2<String, Any?>>) : Json = js.noImpl
+public fun json2(pairs : Array<Pair<String, Any?>>) : Json = js.noImpl
 
 library("jsonAddProperties")
 public fun Json.add(other : Json) : Json = js.noImpl
diff --git a/js/js.libraries/src/stdlib/JUMapsCode.kt b/js/js.libraries/src/stdlib/JUMapsCode.kt
index e7dc84675fe..8903838a6cf 100644
--- a/js/js.libraries/src/stdlib/JUMapsCode.kt
+++ b/js/js.libraries/src/stdlib/JUMapsCode.kt
@@ -13,14 +13,14 @@ public fun <K, V> MutableMap<K, V>.set(key : K, value : V): Unit {
  *
  * @includeFunctionBody ../../test/MapTest.kt createUsingTuples
  */
-public inline fun <K,V> hashMap(vararg values: #(K,V)): HashMap<K,V> {
+public inline fun <K,V> hashMap(vararg values: Pair<K,V>): HashMap<K,V> {
     val answer = HashMap<K,V>()
     /**
         TODO replace by this simpler call when we can pass vararg values into other methods
         answer.putAll(values)
     */
     for (v in values) {
-        answer.put(v._1, v._2)
+        answer.put(v.first, v.second)
     }
     return answer
 }
\ No newline at end of file
diff --git a/libraries/kotlin-swing/src/main/kotlin/kotlin/swing/Frames.kt b/libraries/kotlin-swing/src/main/kotlin/kotlin/swing/Frames.kt
index 3738bf673cc..783239d7cfa 100644
--- a/libraries/kotlin-swing/src/main/kotlin/kotlin/swing/Frames.kt
+++ b/libraries/kotlin-swing/src/main/kotlin/kotlin/swing/Frames.kt
@@ -30,8 +30,8 @@ var JFrame.title: String
         setTitle(t)
     }
 
-var JFrame.size: #(Int, Int)
-    get() = #(getSize().sure().getWidth().toInt(), getSize().sure().getHeight().toInt())
+var JFrame.size: Pair<Int, Int>
+    get() = Pair(getSize().sure().getWidth().toInt(), getSize().sure().getHeight().toInt())
     set(dim) {
         setSize(Dimension(dim._1, dim._2))
     }
diff --git a/libraries/kotlin-swing/src/test/kotlin/test/kotlin/swing/SwingSample.kt b/libraries/kotlin-swing/src/test/kotlin/test/kotlin/swing/SwingSample.kt
index c0b8880a8b2..7b5b1c40651 100644
--- a/libraries/kotlin-swing/src/test/kotlin/test/kotlin/swing/SwingSample.kt
+++ b/libraries/kotlin-swing/src/test/kotlin/test/kotlin/swing/SwingSample.kt
@@ -14,7 +14,7 @@ Enter some text here!
     val f = frame("Kool Kotlin Swing Demo") {
         exitOnClose()
         val test = 12
-        size = #(500, 300)
+        size = Pair(500, 300)
 
         val textArea = JTextArea(greeting)
 
diff --git a/libraries/stdlib/src/kotlin/JLangIterablesSpecial.kt b/libraries/stdlib/src/kotlin/JLangIterablesSpecial.kt
index e28533e76f9..5b36aa4143c 100644
--- a/libraries/stdlib/src/kotlin/JLangIterablesSpecial.kt
+++ b/libraries/stdlib/src/kotlin/JLangIterablesSpecial.kt
@@ -96,11 +96,11 @@ public fun <T> Iterable<T>.contains(item : T) : Boolean {
  *
  * @includeFunctionBody ../../test/ListTest.kt withIndices
  */
-public fun <T> Iterable<T>.withIndices(): List<#(Int, T)> {
-    val answer = ArrayList<#(Int, T)>()
+public fun <T> Iterable<T>.withIndices(): List<Pair<Int, T>> {
+    val answer = ArrayList<Pair<Int, T>>()
     var nextIndex = 0
     for (e in this) {
-        answer.add(#(nextIndex, e))
+        answer.add(Pair(nextIndex, e))
         nextIndex++
     }
     return answer
diff --git a/libraries/stdlib/src/kotlin/JUtilJVM.kt b/libraries/stdlib/src/kotlin/JUtilJVM.kt
index be1565bca42..af6296cd6b5 100644
--- a/libraries/stdlib/src/kotlin/JUtilJVM.kt
+++ b/libraries/stdlib/src/kotlin/JUtilJVM.kt
@@ -24,14 +24,14 @@ public inline fun sortedSet<T>(comparator: Comparator<T>, vararg values: T) : Tr
  *
  * @includeFunctionBody ../../test/MapTest.kt createUsingTuples
  */
-public inline fun <K,V> hashMap(vararg values: #(K,V)): HashMap<K,V> {
+public inline fun <K,V> hashMap(vararg values: Pair<K,V>): HashMap<K,V> {
     val answer = HashMap<K,V>(values.size)
     /**
         TODO replace by this simpler call when we can pass vararg values into other methods
         answer.putAll(values)
     */
     for (v in values) {
-        answer.put(v._1, v._2)
+        answer.put(v.first, v.second)
     }
     return answer
 }
@@ -42,14 +42,14 @@ public inline fun <K,V> hashMap(vararg values: #(K,V)): HashMap<K,V> {
  *
  * @includeFunctionBody ../../test/MapTest.kt createSortedMap
  */
-public inline fun <K,V> sortedMap(vararg values: #(K,V)): SortedMap<K,V> {
+public inline fun <K,V> sortedMap(vararg values: Pair<K, V>): SortedMap<K,V> {
     val answer = TreeMap<K,V>()
     /**
         TODO replace by this simpler call when we can pass vararg values into other methods
         answer.putAll(values)
     */
     for (v in values) {
-        answer.put(v._1, v._2)
+        answer.put(v.first, v.second)
     }
     return answer
 }
@@ -61,14 +61,14 @@ public inline fun <K,V> sortedMap(vararg values: #(K,V)): SortedMap<K,V> {
  *
  * @includeFunctionBody ../../test/MapTest.kt createLinkedMap
  */
-public inline fun <K,V> linkedMap(vararg values: #(K,V)): LinkedHashMap<K,V> {
+public inline fun <K,V> linkedMap(vararg values: Pair<K, V>): LinkedHashMap<K,V> {
     val answer = LinkedHashMap<K,V>(values.size)
     /**
         TODO replace by this simpler call when we can pass vararg values into other methods
         answer.putAll(values)
     */
     for (v in values) {
-        answer.put(v._1, v._2)
+        answer.put(v.first, v.second)
     }
     return answer
 }
diff --git a/libraries/stdlib/src/kotlin/JUtilMaps.kt b/libraries/stdlib/src/kotlin/JUtilMaps.kt
index 0621c1b6da3..3e610d84e78 100644
--- a/libraries/stdlib/src/kotlin/JUtilMaps.kt
+++ b/libraries/stdlib/src/kotlin/JUtilMaps.kt
@@ -94,9 +94,9 @@ public inline fun <K,V,R,C: MutableMap<K,R>> MutableMap<K,V>.mapValuesTo(result:
 /**
  * Puts all the entries into the map with the first value in the tuple being the key and the second the value
  */
-public inline fun <K,V> MutableMap<K,V>.putAll(vararg values: #(K,V)): Unit {
+public inline fun <K,V> MutableMap<K,V>.putAll(vararg values: Pair<K, V>): Unit {
     for (v in values) {
-        put(v._1, v._2)
+        put(v.first, v.second)
     }
 }
 
diff --git a/libraries/stdlib/src/kotlin/Standard.kt b/libraries/stdlib/src/kotlin/Standard.kt
index fbbe3a706dc..be62277c299 100644
--- a/libraries/stdlib/src/kotlin/Standard.kt
+++ b/libraries/stdlib/src/kotlin/Standard.kt
@@ -40,12 +40,12 @@ public inline fun <T> Iterator<T>.toHashSet() : HashSet<T> = toCollection(HashSe
 
 
 /**
- * Creates a tuple of type [[#(A,B)]] from this and *that* which can be useful for creating [[Map]] literals
+ * Creates a tuple of type [[Pair<A,B>]] from this and *that* which can be useful for creating [[Map]] literals
  * with less noise, for example
 
  * @includeFunctionBody ../../test/MapTest.kt createUsingTo
  */
-public inline fun <A,B> A.to(that: B): #(A, B) = #(this, that)
+public inline fun <A,B> A.to(that: B): Pair<A, B> = Pair(this, that)
 
 /**
 Run function f
@@ -61,5 +61,4 @@ public inline fun runnable(action: ()-> Unit): Runnable {
             action()
         }
     }
-}
-
+}
\ No newline at end of file
diff --git a/libraries/stdlib/src/kotlin/concurrent/FunctionalQueue.kt b/libraries/stdlib/src/kotlin/concurrent/FunctionalQueue.kt
index 2f2fd63ff3d..2d90e901e4d 100644
--- a/libraries/stdlib/src/kotlin/concurrent/FunctionalQueue.kt
+++ b/libraries/stdlib/src/kotlin/concurrent/FunctionalQueue.kt
@@ -16,7 +16,7 @@ class FunctionalQueue<T> (
 
     public fun addFirst(element: T) : FunctionalQueue<T> = FunctionalQueue<T>(input, output add element)
 
-    public fun removeFirst() : #(T,FunctionalQueue<T>) =
+    public fun removeFirst() : Pair<T, FunctionalQueue<T>> =
         if(output.empty) {
             if(input.empty)
                 throw java.util.NoSuchElementException()
@@ -24,6 +24,6 @@ class FunctionalQueue<T> (
                 FunctionalQueue<T>(FunctionalList.emptyList<T>(), input.reversed()).removeFirst()
         }
         else {
-            #(output.head, FunctionalQueue<T>(input, output.tail))
+            Pair(output.head, FunctionalQueue<T>(input, output.tail))
         }
 }
diff --git a/libraries/stdlib/test/CollectionJVMTest.kt b/libraries/stdlib/test/CollectionJVMTest.kt
index a2844828ae4..b62b23fd264 100644
--- a/libraries/stdlib/test/CollectionJVMTest.kt
+++ b/libraries/stdlib/test/CollectionJVMTest.kt
@@ -93,13 +93,13 @@ class CollectionJVMTest {
 
     test fun sortBy() {
         expect(arrayList("two" to 2, "three" to 3)) {
-            arrayList("three" to 3, "two" to 2).sortBy { it._2 }
+            arrayList("three" to 3, "two" to 2).sortBy { it.second }
         }
         expect(arrayList("three" to 3, "two" to 2)) {
-            arrayList("three" to 3, "two" to 2).sortBy { it._1 }
+            arrayList("three" to 3, "two" to 2).sortBy { it.first }
         }
         expect(arrayList("two" to 2, "three" to 3)) {
-            arrayList("three" to 3, "two" to 2).sortBy { it._1.length }
+            arrayList("three" to 3, "two" to 2).sortBy { it.first.length }
         }
     }
 
diff --git a/libraries/stdlib/test/ListTest.kt b/libraries/stdlib/test/ListTest.kt
index 0b14f146020..778b2da744b 100644
--- a/libraries/stdlib/test/ListTest.kt
+++ b/libraries/stdlib/test/ListTest.kt
@@ -38,8 +38,8 @@ class ListTest {
         val wis = data.withIndices()
         var index = 0
         for (withIndex in wis) {
-            assertEquals(withIndex._1, index)
-            assertEquals(withIndex._2, data[index])
+            assertEquals(withIndex.first, index)
+            assertEquals(withIndex.second, data[index])
             index++
         }
         assertEquals(data.size(), index)
diff --git a/libraries/stdlib/test/MapTest.kt b/libraries/stdlib/test/MapTest.kt
index fabbc08d1b9..8c4228510bb 100644
--- a/libraries/stdlib/test/MapTest.kt
+++ b/libraries/stdlib/test/MapTest.kt
@@ -103,7 +103,7 @@ class MapTest {
     }
 
     test fun createUsingTuples() {
-        val map = hashMap(#("a", 1), #("b", 2))
+        val map = hashMap(Pair("a", 1), Pair("b", 2))
         assertEquals(2, map.size)
         assertEquals(1, map.get("a"))
         assertEquals(2, map.get("b"))
@@ -117,7 +117,7 @@ class MapTest {
     }
 
     test fun createLinkedMap() {
-        val map = linkedMap(#("c", 3), #("b", 2), #("a", 1))
+        val map = linkedMap(Pair("c", 3), Pair("b", 2), Pair("a", 1))
         assertEquals(1, map.get("a"))
         assertEquals(2, map.get("b"))
         assertEquals(3, map.get("c"))
@@ -125,7 +125,7 @@ class MapTest {
     }
 
     test fun createSortedMap() {
-        val map = sortedMap(#("c", 3), #("b", 2), #("a", 1))
+        val map = sortedMap(Pair("c", 3), Pair("b", 2), Pair("a", 1))
         assertEquals(1, map.get("a"))
         assertEquals(2, map.get("b"))
         assertEquals(3, map.get("c"))
@@ -133,7 +133,7 @@ class MapTest {
     }
 
     test fun toSortedMap() {
-        val map = hashMap<String,Int>(#("c", 3), #("b", 2), #("a", 1))
+        val map = hashMap<String,Int>(Pair("c", 3), Pair("b", 2), Pair("a", 1))
         val sorted = map.toSortedMap<String,Int>()
         assertEquals(1, sorted.get("a"))
         assertEquals(2, sorted.get("b"))
@@ -142,7 +142,7 @@ class MapTest {
     }
 
     test fun toSortedMapWithComparator() {
-        val map = hashMap(#("c", 3), #("bc", 2), #("bd", 4), #("abc", 1))
+        val map = hashMap(Pair("c", 3), Pair("bc", 2), Pair("bd", 4), Pair("abc", 1))
         val c = comparator<String>{ a, b ->
             val answer = a.length() - b.length()
             if (answer == 0) a.compareTo(b) else answer
diff --git a/libraries/stdlib/test/concurrent/SerialFunAndTupleTest.kt b/libraries/stdlib/test/concurrent/SerialFunAndTupleTest.kt
index 498aa1095e4..2daecf4c883 100644
--- a/libraries/stdlib/test/concurrent/SerialFunAndTupleTest.kt
+++ b/libraries/stdlib/test/concurrent/SerialFunAndTupleTest.kt
@@ -15,7 +15,7 @@ class Serial(val a : String) : java.lang.Object(), Serializable {
 
 class SerialTest() : TestCase() {
     fun testMe() {
-        val tuple = #("lala", "bbb", Serial("serial"))
+        val tuple = Triple("lala", "bbb", Serial("serial"))
         val op = { -> tuple.toString() }
 
         val baos = ByteArrayOutputStream()
diff --git a/libraries/stdlib/test/js/MapJsTest.kt b/libraries/stdlib/test/js/MapJsTest.kt
index 82b75fa75ad..8bcc88a4acb 100644
--- a/libraries/stdlib/test/js/MapJsTest.kt
+++ b/libraries/stdlib/test/js/MapJsTest.kt
@@ -52,7 +52,7 @@ class MapJsTest {
     */
 
     test fun createUsingTuples() {
-        val map = hashMap(#("a", 1), #("b", 2))
+        val map = hashMap(Pair("a", 1), Pair("b", 2))
         assertEquals(2, map.size)
         assertEquals(1, map.get("a"))
         assertEquals(2, map.get("b"))
diff --git a/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/collections.kt b/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/collections.kt
index 0b8db7995f0..047419897b8 100644
--- a/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/collections.kt
+++ b/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/collections.kt
@@ -4,14 +4,14 @@ import java.util.HashMap
 import java.util.List
 import java.util.Map
 
-fun <A, K, V> List<A>.toHashMap(f: (A) -> #(K, V)): Map<K, V> {
+fun <A, K, V> List<A>.toHashMap(f: (A) -> Pair<K, V>): Map<K, V> {
     val r = HashMap<K, V>()
     for (item in this) {
         val entry = f(item)
-        r.put(entry._1, entry._2)
+        r.put(entry.first, entry.second)
     }
     return r
 }
 
 
-fun <K, V> List<V>.toHashMapMappingToKey(f: (V) -> K): Map<K, V> = toHashMap { v -> #(f(v), v) }
+fun <K, V> List<V>.toHashMapMappingToKey(f: (V) -> K): Map<K, V> = toHashMap { v -> Pair(f(v), v) }
diff --git a/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/highlighter2/psiUtils.kt b/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/highlighter2/psiUtils.kt
index 6540c8c98f4..4991919bdda 100644
--- a/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/highlighter2/psiUtils.kt
+++ b/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/highlighter2/psiUtils.kt
@@ -16,24 +16,24 @@ private fun PsiElement.getAllChildren(): List<PsiElement> {
     return r.build()
 }
 
-private fun splitPsiImpl(psi: PsiElement, listBuilder: ImmutableArrayListBuilder<#(String, PsiElement)>) {
+private fun splitPsiImpl(psi: PsiElement, listBuilder: ImmutableArrayListBuilder<Pair<String, PsiElement>>) {
     var lastPos = 0
     for (child in psi.getAllChildren()) {
         if (child.getTextChildRelativeOffset() > lastPos) {
             val text = psi.getText()!!.substring(lastPos, child.getTextChildRelativeOffset())
-            listBuilder.add(#(text, psi))
+            listBuilder.add(Pair(text, psi))
         }
         splitPsiImpl(child, listBuilder)
         lastPos = child.getTextChildRelativeOffset() + child.getTextRange()!!.getLength()
     }
     if (lastPos < psi.getTextRange()!!.getLength()) {
         val text = psi.getText()!!.substring(lastPos)
-        listBuilder.add(#(text, psi))
+        listBuilder.add(Pair(text, psi))
     }
 }
 
-fun splitPsi(psi: PsiElement): List<#(String, PsiElement)> {
-    val listBuilder = listBuilder<#(String, PsiElement)>()
+fun splitPsi(psi: PsiElement): List<Pair(String, PsiElement)> {
+    val listBuilder = listBuilder<Pair(String, PsiElement)>()
     splitPsiImpl(psi, listBuilder)
     return listBuilder.build()
 }
diff --git a/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/model/KotlinModel.kt b/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/model/KotlinModel.kt
index cac060f006a..e8fe23211b1 100644
--- a/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/model/KotlinModel.kt
+++ b/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/model/KotlinModel.kt
@@ -734,13 +734,13 @@ class TemplateLinkRenderer(val annotated: KAnnotated, val template: KDocTemplate
     // TODO dirty hack - remove when this issue is fixed
     // http://youtrack.jetbrains.com/issue/KT-1524
     val hackedLinks = hashMap(
-            #("IllegalArgumentException", #("java.lang", "java/lang/IllegalArgumentException.html")),
-            #("IllegalStateException", #("java.lang", "java/lang/IllegalStateException.html")),
-            #("Map.Entry", #("java.util", "java/util/Map.Entry.html")),
-            #("System.in", #("java.lang", "java/lang/System.html#in")),
-            #("System.out", #("java.lang", "java/lang/System.html#in")),
-            #("#equals()", #("java.lang", "java/lang/Object.html#equals(java.lang.Object)")),
-            #("#hashCode()", #("java.lang", "java/lang/Object.html#hashCode()"))
+            Pair("IllegalArgumentException", Pair("java.lang", "java/lang/IllegalArgumentException.html")),
+            Pair("IllegalStateException", Pair("java.lang", "java/lang/IllegalStateException.html")),
+            Pair("Map.Entry", Pair("java.util", "java/util/Map.Entry.html")),
+            Pair("System.in", Pair("java.lang", "java/lang/System.html#in")),
+            Pair("System.out", Pair("java.lang", "java/lang/System.html#in")),
+            Pair("#equals()", Pair("java.lang", "java/lang/Object.html#equals(java.lang.Object)")),
+            Pair("#hashCode()", Pair("java.lang", "java/lang/Object.html#hashCode()"))
     )
 
 
diff --git a/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/template/HtmlTemplate.kt b/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/template/HtmlTemplate.kt
index 4ec4b8c694c..7d11d480f99 100644
--- a/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/template/HtmlTemplate.kt
+++ b/libraries/tools/kdoc/src/main/kotlin/org/jetbrains/kotlin/template/HtmlTemplate.kt
@@ -8,13 +8,13 @@ abstract class HtmlTemplate() : TextTemplate() {
             tagName: String,
             style: String? = null,
             className: String? = null,
-            attributes: List<#(String, String)> = arrayList(),
+            attributes: List<Pair<String, String>> = arrayList(),
             content: () -> Unit) {
-        val allAttributesBuilder = listBuilder<#(String, String)>()
+        val allAttributesBuilder = listBuilder<Pair<String, String>>()
         if (style != null)
-            allAttributesBuilder.add(#("style", style))
+            allAttributesBuilder.add(Pair("style", style))
         if (className != null)
-            allAttributesBuilder.add(#("class", className))
+            allAttributesBuilder.add(Pair("class", className))
 
         // TODO: add addAll to ListBuilder
         for (attribute in attributes)
@@ -55,7 +55,7 @@ abstract class HtmlTemplate() : TextTemplate() {
     fun linkCssStylesheet(href: String) =
         tag(
             tagName = "link",
-            attributes = arrayList(#("rel", "stylesheet"), #("type", "text/css"), #("href", href))) {}
+            attributes = arrayList(Pair("rel", "stylesheet"), Pair("type", "text/css"), Pair("href", href))) {}
 
     fun body(style: String? = null, className: String? = null, content: () -> Unit) =
         tag(tagName = "body", style = style, className = className, content = content)
@@ -79,11 +79,11 @@ abstract class HtmlTemplate() : TextTemplate() {
         tag(tagName = "span", style = style, className = className, content = content)
 
     fun a(href: String? = null, name: String? = null, content: () -> Unit) {
-        val attributes = listBuilder<#(String, String)>()
+        val attributes = listBuilder<Pair<String, String>>()
         if (href != null)
-            attributes.add(#("href", href))
+            attributes.add(Pair("href", href))
         if (name != null)
-            attributes.add(#("name", name))
+            attributes.add(Pair("name", name))
         tag(tagName = "a", attributes = attributes.build(), content = content)
     }
 }