| # CHANGELOG |
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| <!-- Find: ([^\`/\[])(KT-\d+) --> |
| <!-- Replace: $1[`$2`](https://youtrack.jetbrains.com/issue/$2) --> |
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| ## 1.1-M02 (EAP-2) |
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| ### Language features |
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| + **Destructuring for lambdas** ([proposal](https://github.com/Kotlin/KEEP/issues/32)) |
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| Current limitations: |
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| - Nested destructuring is not supported |
| - Destructuring in named functions/constructors is not supported |
| - Is not supported for JS target |
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| ### Compiler |
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| #### Smart cast enhancements |
| - [`KT-2127`](https://youtrack.jetbrains.com/issue/KT-2127) Smart cast receiver to not null after a not null safe call |
| - [`KT-6840`](https://youtrack.jetbrains.com/issue/KT-6840) Make data flow information the same for assigned and assignee |
| - [`KT-13426`](https://youtrack.jetbrains.com/issue/KT-13426) Fix exception when smartcast on both dispatch & extension receiver |
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| #### Bound references related issues |
| - [`KT-12995`](https://youtrack.jetbrains.com/issue/KT-12995) Do not skip generation of the left-hand side for intrinsic bound references and class literals |
| - [`KT-13075`](https://youtrack.jetbrains.com/issue/KT-13075) Fix codegen for bound class reference |
| - [`KT-13110`](https://youtrack.jetbrains.com/issue/KT-13110) Fix type mismatch error on class literal with integer receiver expression |
| - [`KT-13172`](https://youtrack.jetbrains.com/issue/KT-13172) Report error on "this::class" in super constructor call |
| - [`KT-13271`](https://youtrack.jetbrains.com/issue/KT-13271) Fix incorrect unsupported error on synthetic extension call on LHS of :: |
| - [`KT-13367`](https://youtrack.jetbrains.com/issue/KT-13367) Inline bound callable reference if it's used only as a lambda |
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| #### Coroutines related issues |
| - [`KT-13156`](https://youtrack.jetbrains.com/issue/KT-13156) Do not execute last Unit-typed coroutine statement twice |
| - [`KT-13246`](https://youtrack.jetbrains.com/issue/KT-13246) Fix VerifyError with coroutines on Dalvik |
| - [`KT-13289`](https://youtrack.jetbrains.com/issue/KT-13289) Fix VerifyError with coroutines: Bad type on operand stack |
| - [`KT-13409`](https://youtrack.jetbrains.com/issue/KT-13409) Fix generic variable spilling with coroutines |
| - [`KT-13531`](https://youtrack.jetbrains.com/issue/KT-13531) Fix ClassCastException when coercion to Unit interacts with generic await() and coroutines |
| - Prohibit `Continuation<*>` as a last parameter of suspend functions |
| - [`KT-13560`](https://youtrack.jetbrains.com/issue/KT-13560) Prohibit non-Unit suspend functions |
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| #### Typealises related issues |
| - [`KT-13200`](https://youtrack.jetbrains.com/issue/KT-13200) Fix incorrect number of required type arguments reported on typealias |
| - [`KT-13181`](https://youtrack.jetbrains.com/issue/KT-13181) Fix unresolved reference for a type alias from a different module |
| - [`KT-13161`](https://youtrack.jetbrains.com/issue/KT-13161) Support java static methods calls with typealiases |
| - [`KT-13835`](https://youtrack.jetbrains.com/issue/KT-13835) Do not lose nullability information while expanding type alias in projection position |
| - [`KT-13422`](https://youtrack.jetbrains.com/issue/KT-13422) Prohibit usage of type alias to exception class as an object in 'throw' expression |
| - [`KT-13735`](https://youtrack.jetbrains.com/issue/KT-13735) Fix NoSuchMethodError for generic typealias access |
| - [`KT-13513`](https://youtrack.jetbrains.com/issue/KT-13513) Support SAM constructors for aliased java functional types |
| - [`KT-13822`](https://youtrack.jetbrains.com/issue/KT-13822) Fix exception for start-projection of a type alias |
| - [`KT-14071`](https://youtrack.jetbrains.com/issue/KT-14071) Prohibit using type alias as a qualifier for super |
| - [`KT-14282`](https://youtrack.jetbrains.com/issue/KT-14282) Report error on unused type alias with -language-version 1.0 |
| - [`KT-14274`](https://youtrack.jetbrains.com/issue/KT-14274) Fix type alias resolution when it's used for supertype constructor call |
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| #### JDK dependent built-in classes related issues |
| - [`KT-13209`](https://youtrack.jetbrains.com/issue/KT-13209) Change first parameter's type of Map.getOrDefault to K instead of Any |
| - [`KT-13069`](https://youtrack.jetbrains.com/issue/KT-13069) Do not emit invalid DefaultImpls delegation when interface extends MutableMap with JDK8 |
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| #### `data` classes and inheritance |
| - [`KT-11306`](https://youtrack.jetbrains.com/issue/KT-11306) Allow data classes to implement equals/hashCode/toString from base classes |
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| #### Various JVM code generation issues |
| - [`KT-13182`](https://youtrack.jetbrains.com/issue/KT-13182) Fix compiler internal error at inline |
| - [`KT-13757`](https://youtrack.jetbrains.com/issue/KT-13757) Prohibit referencing nested classes by name with $ |
| - [`KT-12985`](https://youtrack.jetbrains.com/issue/KT-12985) Do not create range instances for 'for' loop in CharSequence.indices |
| - [`KT-13931`](https://youtrack.jetbrains.com/issue/KT-13931) Optimize generated code for IntRange#contains |
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| #### Various analysis & diagnostic issues |
| - [`KT-435`](https://youtrack.jetbrains.com/issue/KT-435) Use parameter names in error messages when calling a function-valued expression |
| - [`KT-10001`](https://youtrack.jetbrains.com/issue/KT-10001) Fix false unnecessary non-null assertion on a pair element |
| - [`KT-12811`](https://youtrack.jetbrains.com/issue/KT-12811) Treat function declaration as final if it is a member of a final class |
| - [`KT-13961`](https://youtrack.jetbrains.com/issue/KT-13961) Report REDECLARATION on private-in-file 'foo' vs public 'foo' in different file |
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| ### JS |
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| #### Feature support |
| - [`KT-13544`](https://youtrack.jetbrains.com/issue/KT-13544) Support type aliases in JS |
| - [`KT-13345`](https://youtrack.jetbrains.com/issue/KT-13345) Support class literals in JS |
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| #### Library updates |
| - [`KT-18`](https://youtrack.jetbrains.com/issue/KT-18) Move exceptions from `java.lang` to `kotlin` package |
| - [`KT-12386`](https://youtrack.jetbrains.com/issue/KT-12386) Rewrite JS collections in Kotlin, move them to `kotlin.collections` package |
| - [`KT-7809`](https://youtrack.jetbrains.com/issue/KT-7809) Make Collection implementations conform to their declared interfaces |
| - [`KT-7473`](https://youtrack.jetbrains.com/issue/KT-7473) Make AbstractCollection.equals check object type |
| - [`KT-13429`](https://youtrack.jetbrains.com/issue/KT-13429) Make 'remove' on fresh iterator throw exception instead of removing last element |
| - [`KT-13459`](https://youtrack.jetbrains.com/issue/KT-13459) Make JS implementation of ArrayList::add(index, element) check the index is in valid range |
| - [`KT-8724`](https://youtrack.jetbrains.com/issue/KT-8724) Fix MutableIterator.remove() for HashMap |
| - [`KT-10786`](https://youtrack.jetbrains.com/issue/KT-10786) Make Map.keys return view of map keys instead of snapshot |
| - [`KT-14194`](https://youtrack.jetbrains.com/issue/KT-14194) Make HashMap.putAll implementation not to call getKey/getValue |
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| ### Standard Library |
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| #### Backward compatibility |
| - [`KT-14297`](https://youtrack.jetbrains.com/issue/KT-14297) Add @SinceKotlin annotation to support compatibility with compilation against older standard library |
| - [`KT-14213`](https://youtrack.jetbrains.com/issue/KT-14213) Ensure printStackTrace can be called with -language-version 1.0 |
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| #### Enhancements |
| - [`KEEP-53`](https://github.com/Kotlin/KEEP/blob/master/proposals/stdlib/abstract-collections.md) Provide two distinct hierarchies of abstract collections: one for implementing read-only/immutable collections, and other for implementing mutable collections |
| - [`KEEP-13`](https://github.com/Kotlin/KEEP/blob/master/proposals/stdlib/map-copying.md) Provide extension functions to copy maps |
| - [`KT-18`](https://youtrack.jetbrains.com/issue/KT-18) Introduce type aliases for common exceptions from `java.lang` in `kotlin` package |
| - [`KT-12762`](https://youtrack.jetbrains.com/issue/KT-12762) Make `kotlin.ranges.until` return an empty range for "illegal" 'to' parameter |
| - [`KT-12894`](https://youtrack.jetbrains.com/issue/KT-12894) Allow nullable receiver for `use` extension |
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| ### Reflection |
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| #### New features |
| - [`KT-8998`](https://youtrack.jetbrains.com/issue/KT-8998) Introduce comprehensive API to work with KType instances |
| - [`KT-10447`](https://youtrack.jetbrains.com/issue/KT-10447) Provide a way to check if a KClass is a data class |
| - [`KT-11284`](https://youtrack.jetbrains.com/issue/KT-11284) Add KClass<T>.cast extension |
| - [`KT-13106`](https://youtrack.jetbrains.com/issue/KT-13106) Support annotation constructors in reflection |
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| #### Optimizations |
| - [`KT-10651`](https://youtrack.jetbrains.com/issue/KT-10651) Optimize KClass.simpleName |
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| ### IDE |
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| ###### New features |
| - [`KT-12903`](https://youtrack.jetbrains.com/issue/KT-12903) Implement "Inline type alias" refactoring |
| - [`KT-12902`](https://youtrack.jetbrains.com/issue/KT-12902) Implement "Introduce type alias" refactoring |
| - [`KT-12904`](https://youtrack.jetbrains.com/issue/KT-12904) Implement "Create type alias from usage" quick fix |
| - [`KT-9016`](https://youtrack.jetbrains.com/issue/KT-9016) Make use of named higher order function parameters |
| - [`KT-12205`](https://youtrack.jetbrains.com/issue/KT-12205) Suggest import of Kotlin static members in editor with Java source |
| - [`KT-13941`](https://youtrack.jetbrains.com/issue/KT-13941) Implement intention for introducing destructured lambda parameters when it's possible |
| - [`KT-13943`](https://youtrack.jetbrains.com/issue/KT-13943) Implement inspection and quickfix for to detect a manual destructuring of for / lambda parameter |
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| ###### Issues fixed |
| - [`KT-13004`](https://youtrack.jetbrains.com/issue/KT-13004) Support bound method references in completion |
| - [`KT-13242`](https://youtrack.jetbrains.com/issue/KT-13242) Suggest 'typealias' keyword in completion |
| - [`KT-13244`](https://youtrack.jetbrains.com/issue/KT-13244) Override/Implement Members: Do not expand type aliases in the generated members |
| - [`KT-13611`](https://youtrack.jetbrains.com/issue/KT-13611) Go to Class: Fix presentation of type aliases |
| - [`KT-13759`](https://youtrack.jetbrains.com/issue/KT-13759) Rename: Process object-wrapping alias references |
| - [`KT-13955`](https://youtrack.jetbrains.com/issue/KT-13955) Find Usages: Add special type for usages inside of type aliases |
| - [`KT-13479`](https://youtrack.jetbrains.com/issue/KT-13479) Support navigation to type aliases from binaries |
| - [`KT-13766`](https://youtrack.jetbrains.com/issue/KT-13766) Fix optimize imports not to add wrong and unnecessary import because of type alias |
| - [`KT-12949`](https://youtrack.jetbrains.com/issue/KT-12949) Consider type aliases as candidates for import |
| - [`KT-13266`](https://youtrack.jetbrains.com/issue/KT-13266) Suggest non-imported type aliases in completion |
| - [`KT-13689`](https://youtrack.jetbrains.com/issue/KT-13689) Do not treat type alias constructor usage as original type usage for optimize imports |
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| ### Scripting |
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| - A new library `kotlin-script-util` containing utilities for implementing kotlin script support |
| - [`KT-7880`](https://youtrack.jetbrains.com/issue/KT-7880) Experimental support for JSR 223 Scripting API |
| - [`KT-13975`](https://youtrack.jetbrains.com/issue/KT-13975), [`KT-14264`](https://youtrack.jetbrains.com/issue/KT-14264) Convert error on retrieving gradle plugin settings to warning |
| - Implement support for custom template-based scripts in command-line compiler, maven and gradle plugins |
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| ### Previous releases |
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| This release also includes the following issues fixed in [`1.0.5`](https://github.com/JetBrains/kotlin/blob/c3fb2bb2aa346f295663a781b4497b942da27cd9/ChangeLog.md) |
| and [`1.1-M01`](https://github.com/JetBrains/kotlin/blob/54f891ab30eab3b3f2da05094f088259ded62b96/ChangeLog.md) |
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| Note that not all of the issues of the final 1.0.5 release will be included in M02, but only ones mentioned on the page from the hyperlink above. |
