Betternet 歷史版本列表
更新時間：2019-06-11
更新細節：
What's new in this version:
Release summary:
- 2.13 improves Scala in the following areas:
- Collections: Standard library collections have been overhauled for simplicity, performance, and safety. This is the centerpiece of the release.
- Standard library: Future is faster and more robust. Elsewhere, useful classes and methods have been added.
- Language: Literal types, partial unification, by-name implicits, more.
- Compiler: 5-10% faster, deterministic output, improved optimizer.
Collections redesign:
- Standard library collections have been overhauled for for simplicity, performance, and safety.
- This is the centerpiece of the release.
- Most ordinary code that used the old collections will continue to work as-is, except as detailed below.
The most important collections changes are:
- Simpler method signatures
- No more CanBuildFrom. Transformation methods no longer take an implicit CanBuildFrom parameter.
- The resulting library is easier to understand (in code, Scaladoc, and IDE code completion).
- It also makes user code compile faster.
- A new BuildFrom implicit is used in a handful of places that need it.
- Simpler type hierarchy
- No more Traversable and TraversableOnce.
- They remain only as deprecated aliases for Iterable and IterableOnce.
- Parallel collections are now a separate module.
- As a result, GenSeq, GenTraversableOnce, et al are gone.
- Immutable scala.Seq
- Seq is now an alias for collection.immutable.Seq
- Before, it was an alias for the possibly-mutable collection.Seq.
- This also changes the type of varargs in methods and pattern matches.
- Arrays passed as varargs are defensively copied. (#6970)
- Simplified views that work
- collection.Views have been vastly simplified and should now work reliably.
- New, faster HashMap/Set implementations
- Both immutable (d5ae93e) and mutable (#7348) versions were completely replaced.
- They substantially outperform the old implementations in most scenarios.
- The mutable versions now perform on par with the Java standard library's implementations.
- New concrete collections
- immutable.LazyList replaces immutable.Stream. Stream had different laziness behavior and is now deprecated. (#7558, #7000)
- immutable.ArraySeq is an immutable wrapper for an array; there is also a mutable version
- mutable.CollisionProofHashMap guards against denial-of-service attacks (#7633)
- mutable.ArrayDeque is a double-ended queue that internally uses a resizable circular buffer (scala/collection-strawman#490)
- New abstract collection type SeqMap
- immutable.SeqMap provides immutable maps that maintain insertion order. (#7954)
- Implementations: VectorMap (#6854) and TreeSeqMap (#7146) (in addition to the already existing ListMap).
Additional collections changes:
- New to(Collection) method
- Replaces old to[Collection] method.
- The argument is the companion object of the desired collection type, for example .to(Vector).
- The API change enables support for all collection types (including Map, BitSet, et al).
- No more collection.breakOut
- It required CanBuildFrom, which no longer exists.
- To avoid constructing intermediate collections, use .view and .to(Collection) instead.
- List and Vector are safer
- They now offer safe publication under the Java Memory Model, using releaseFence (#6425)
- Java interop has moved
- Extension methods for Scala are now in scala.jdk
- Explicit converters for Java are in scala.jdk.javaapi
- The reorganization centralizes all to-and-from-Java converters, including both collection and non-collection types, in a single package.
- Collection serialization has changed
- Collections now use the the serialization proxy pattern uniformly whenever possible. (#6676, #7624, scala-dev#562, sbt/sbt#89)
- In some classloading environments, notably sbt's non-forked test execution, code changes may be needed.
- Added .unfold
- This allows constructing a collection or iterator from an initial element and a repeated Option-returning operation, terminating on None.
- This was added collection companion objects and to Iterator (#6851)
- Added .lengthIs/.sizeIs and .sizeCompare
- These allow fluent size comparisons without traversing the whole collection (#6950, #6758)
- Examples: xs.sizeIs < 10, xs.sizeIs == 2
- Improved support for extension methods on collections
- Offered via IsIterable et al (#6674)
- Error-prone Map methods deprecated
- Deprecated .filterKeys and .mapValues (#7014)
- Instead, use the new methods of the same names on MapView (e.g. .view.filterKeys)
- Added .lazyZip
- Together with .zip on views, this replaces .zipped (now deprecated). (scala/collection-strawman#223)
- Deprecated symbolic methods with multiple arguments
- This is because such methods may be disallowed entirely in a future Scala (#6719)
- Adding custom collections and operations works very differently
- See documentation links below.
To learn more about the new APIs and how to adapt your code, consult:
- Scala 2.13's Collections
- Intro for newcomers. Skip if the collections from Scala 2.12 and earlier are already familiar to you.
- The Architecture of Scala 2.13 Collections
- Implementing Custom Collections (Scala 2.13)
- Adding Custom Collection Operations (Scala 2.13)
- Migrating a Project to 2.13's Collections.
- This document describes the main changes for collection users that migrate to Scala 2.13 and shows how to cross-build on Scala 2.11/12/13.
- scala-collection-compat
- This new module provides shims for cross-building on Scala 2.11/12/13.
- It also provides two sets of Scalafix rewrites: one for cross-building, one for moving to 2.13 only.
- We welcome assistance in continuing to expand and improve these documents.
Concurrency:
Futures were internally redesigned, with these goals:
- provide expected behavior under a broader set of failure conditions
- provide a foundation for increased performance
- support more robust applications
Details:
- Updated and revised our Future and Promise implementation. (#6610, #7663)
- Among other changes, handling of InterruptedException and RejectedExecutionException is improved.
- Made the global ExecutionContext “batched”. (#7470)
- Added synchronous ("parasitic") ExecutionContext. (#7784)
- Standard library: additions:
- Integrated Java interop (#7987)
- The old scala-java8-compat module is now part of the standard library. (#7458)
- This provides converters for options, function types and Java streams.
- (As mentioned above, collection converters such as JavaConverters were moved to fit into the new scheme.)
- new: scala.util.Using
- This provides a simple form of automatic resource management. (#6907)
- new: .toIntOption, et al
- These new extension methods on String are provided by StringOps.
- They parse literals and efficiently reject invalid input without throwing exceptions. (#6538)
- Examples: "12".toIntOption => Some(12), "12.3".toIntOption => None, "12.3".toDoubleOption => Some(12.3)
- new: named Product elements
- Case classes and other Products now have productElementNames and productElementName methods. (#6972)
- new: .withRight, .withLeft
- These methods on Left and Right allow upcasting the other type parameter (#7011, #7080)
- Example: Left(3).withRight[String] has type Either[Int, String] without having to write Int
- new: Ordering.Double.TotalOrdering, Ordering.Float.TotalOrdering
- The old orderings remain available at: Ordering.Double.IeeeOrdering, Ordering.Float.IeeeOrdering
- Example: List(2.0, 1.0).sorted is now ambiguous without specifying an ordering
- new: pipe and tap
- These chaining operations are available via import scala.util.chaining._. (#7007)
- Example: 3.pipe(_ * 5) evaluates to 15
- Example: 9.tap(println) first prints 9, then returns it
Standard library: changes:
- Library fits in compact1 profile
- This reduces deployment footprint for Scala applications. (#6164, scala/bug#10559)
- Option extends IterableOnce
- This improves type inference when calling an overloaded flatMap. (#8038)
Standard library: deprecations and removals:
- String-building using + with a non-String type on the left (aka any2stringadd) is now deprecated (#6315, #6755)
- PartialFunction.fromFunction replaces PartialFunction.apply (#6703)
- Right projections on Either are now deprecated (#6682, #8012)
- The following modules are no longer included in the distribution: scala-xml, scala-parser-combinators, scala-swing.
- They remain available from Maven Central.
- Assorted deprecated methods and classes throughout the standard library have been removed entirely.
Language changes:
- 2.13 is primarily a library release, not a language/compiler release. Regardless, some language changes are included:
Features:
- Literal types
- Literals (for strings, integers, and so on) now have associated literal types. (#5310)
- See the original proposal, SIP-23, for motivation and details.
- The compiler will provide instances of a new typeclass scala.ValueOf[T] for all singleton types T.
- The value of a singleton type can be accessed by calling method valueOf[T]. Example: val one: 1 = valueOf[1]
- Partial unification on by default
- Improves type constructor inference, fixes SI-2712.
- We recommend this [great explanation of this feature] (https://gist.github.com/djspiewak/7a81a395c461fd3a09a6941d4cd040f2).
- This feature is no longer considered experimental (#5102)
- The compiler no longer accepts -Ypartial-unification.
- By-name implicits with recursive dictionaries
- This extends by-name method arguments to support implicit (not just explicit) parameters.
- This enables implicit search to construct recursive values.
- The flagship use-case is typeclass derivation.
- Details: see the by-name implicits SIP, #6050, #7368
- Underscores in numeric literals
- Underscores can now be used as a spacer. (#6989)
- Example: 1_000_000
Experimental features:
- Macro annotations
- There is no more "macro paradise" compiler plugin for 2.13.
- Instead, macro annotations are handled directly by the compiler.
- Macro annotations are enabled with the -Ymacro-annotations flag. #6606
- Macro annotations remain experimental.
Deprecations:
- Procedure syntax deprecated
- Deprecated: def m() { ... }) #6325
- Use instead: def m(): Unit = { ... }
- View bounds deprecated
- Deprecated: A <% B (#6500)
- Use instead: (implicit ev: A => B)
Adjustments:
- Explicit imports now shadow locally defined identifiers. (#6589)
- This is a breaking change.
- Better typing for overloaded higher-order methods (#6871, #7631)
- This change was a key enabler for the new collections design.
- Rework unification of Object and Any in Java/Scala interop (#7966)
- Name-based pattern matching has changed to enable immutable Seq matches (#7068)
- Automatic eta-expansion of zero-argument methods is no longer deprecated (#7660)
- Improve binary stability of extension methods (#7896)
- Macros must now have explicit return types (#6942)
- Mixin fields with trait setters are no longer JVM final (#7028)
- In addition, object fields are now static (#7270)
- Support implicitNotFound on parameters (#6340)
- Disallow repeated parameters except in method signatures (#7399)
- x op () now parses as x.op(()) not x.op() (#7684)
Compiler:
- Deterministic, reproducible compilation
- The compiler generates identical output for identical input in more cases, for reproducible builds. (scala-dev#405)
- Optimizer improvements
- Operations on collections and arrays are now optimized more, including improved inlining. (#7133)
And:
- Scaladoc supports setting canonical URLs (#7834)
- This helps search engines identify the most relevant/recent version of a page when several versions are available.
- Compiler suggests possible corrections for unrecognized identifiers (#6711)
- Example: List(1).sizzle => value sizzle is not a member of List[Int], did you mean size?
- Added -Yimports for custom preamble imports. (#6764)
- Example: -Yimports:x,y,z means x, y, and z are root imports of the form: import x._ { import y._ { import z._ { ... } } }
- The scala-compiler JAR no longer depends on scala-xml (#6436)
Plus, changes to compiler options:
- Replaced -warn-option with -Woption (#7908)
- Promoted -deprecation to -Xlint:deprecation (#7714)
- Deprecated -Xfuture (#7328)
- Instead, use e.g. -Xsource:2.14
- Removed -Xmax-classfile-length
- It's hard-coded to 240 now (#7497)
Scripting and environment:
- The script runner (scala Script.scala) no longer uses the fsc compilation daemon by default. (#6747)
- The daemon was not reliable and will likely be removed entirely from a future release.
- JEP 293 style long command-line options are now supported (#6499)
- The REPL has undergone an internal refactoring to enable future improvements (#7384)
Compiler performance:
We invested heavily in compiler speedups during the 2.13 cycle, but most of that work actually already landed in the 2.12.x series, with more to - come in 2.12.9.
- In addition, the compiler performance in 2.13 is 5-10% better compared to 2.12, thanks mainly to the new collections. See performance graph.
- Also, certain kinds of code now compile much faster because the compiler aggressively prunes polymorphic implicits during search (#6580).
Compatibility:
- Like Scala 2.12, the 2.13 series targets Java 8, minimum. Both 2.12 and 2.13 also work on later JDKs such as JDK 11; see our JDK Compatibility - Guide.
Although Scala 2.11, 2.12, and 2.13 are mostly source compatible to facilitate cross-building, they are not binary compatible. This allows us to - keep improving the Scala compiler and standard library.
- All 2.13.x releases will be fully binary compatible with 2.13.0, in according with the policy we have followed since 2.10.
- The list of open-source libraries released for Scala 2.13 is growing quickly!
Projects built with sbt must use at least sbt 1.2.8 (or 0.13.18) to use Scala 2.13. To move to 2.13, bump the scalaVersion setting in your - existing project.
- Scala also works with Maven, Gradle, and other build tools.
更新時間：2019-06-02
更新細節：
What's new in this version:
Improvements:
- App Logging: Using dbviscmd shows any passwords set as arguments in the debug output
- Connection Setup: Allow configuration of the maximum SSH authentication retries
- Connection Setup: Introduce the "Fetch Size" connection property used to give a hint to the JDBC driver the number of result set rows to get in a single network call
- DB Support DB2 LUW: Update the DB2 JDBC driver to 4.25.1301
- DB Support Elasticsearch: Add Database Type and driver entry for Elasticsearch
- DB Support Exasol: Update Exasol JDBC driver to version 6.1.2
- DB Support Exasol: DDLs for Exasol Views are not generated correctly
- DB Support Exasol: Updates for Exasol
- DB Support H2: Table index node should include the column the index refers to
- DB Support InterSystems IRIS: Add database type and driver entry for InterSystems IRIS
- DB Support SQL Server: Include Creation and Modification Date in the listings for tables, views, procedures, etc.
- DB Support Sybase ASE Object View: For Sybase ASE add a new DBA->Blocked or Waiting Objects view
- Database Profile: Add right-click menu item "Open" in the connection Properties->Database Profile list. Will open the selected profile XML file in system editor
- Docs EULA: Request EULA consent when starting DbVisualizer rather than approving it during installation
- Export: Allow generating multi-row inserts with a single INSERT statement in the export features
- Installation/Update Installation Java 8: Now bundles the AdoptOpenJDK 8: on Windows 32/64 and AdoptOpenJDK 11 on macOS
- SQL Editor: Rearrange the SQL editor right-click menu by moving for example cut, copy, and paste to top level rather than the Edit sub menu
- Workspace: Loading a file that is already open in a floating window should move that window in front of all other DbVisualizer windows
Bugs Fixed:
- Command Line Support (dbviscmd): dbviscmd should fail with a user friendly message if no Java runtime can be found
- Command Line Support (dbviscmd): dbviscmd doesn't tell if there is no command specified in the -sql parameter or if the file identified by -sqlfile doesn't exist or is empty
- Compare DB Support DB2 LUW: Grid Compare doesn't honor the Grid->Show Column Alias as Grid Column Label tool property for drivers supporting aliases such as DB2
- DB Support Exasol: There are no columns listed for database Views
- DB Support MySQL, DDL Generator: The DDL for a GEOMETRY and its spatial key is incorrect
- DB Support Oracle: The "Change Password" capability for Oracle is invisible for a brand new Oracle connection. Only restart makes it visible
- DB Support PostgreSQL: View definition not visible for a user not owning the view
- DB Support PostgreSQL: Empty Arrays are displayed as NULL
- DB Support PostgreSQL, DB Support Redshift: When getting catalogs in Redshift there is suddenly the "oid" column in first index where catalog name is expected
- DB Support PostgreSQL, Data tab, Procedure Editor: Having "Preserve Object View tabs at Disconnect" disabled and object view tabs with edited content, when reconnect these tabs are closed without confirmation (for ex the Data tab and Procedure Editor)
- DDL Generator: The DDL for a view object with a comment is "COMMENT ON TABLE" rather than "COMMENT ON VIEW"
- Database Objects Tree: SQL Commander Dragging an object name from the Databases tab to the SQL Commander should insert the name at the caret position
- Scripts: Exception when moving directory to another directory in the scripts Tab
- Workspace: New tabs may occasionally end up in new tab groups
更新時間：2019-05-28
更新細節：
What's new in this version:
- BUG: Some PyPy versions lack PyStructSequence_InitType2.
- MAINT, DEP: Fix deprecated assertEquals()
- BUG: Fix structured_to_unstructured on single-field types (backport)
- BLD: Make CI pass again with pytest 4.5
- TST: Register markers in conftest.py.
- BUG: Removes ValueError for empty kwargs in arraymultiter_new
- BUG: Add TypeError to accepted exceptions in crackfortran.
- BUG: Handle subarrays in descr_to_dtype
- BUG: Protect generators from log(0.0)
- BUG: Always return views from structured_to_unstructured when...
- BUG: Catch stderr when checking compiler version
- BUG: longdouble(int) does not work
- BUG: distutils/system_info.py fix missing subprocess import (#13523)
- BUG,DEP: Fix writeable flag setting for arrays without base
- MAINT: Prepare for the 1.16.4 release.
- BUG: special case object arrays when printing rel-, abs-error
更新時間：2019-05-24
更新細節：
What's new in this version:
- Improved layout of some interface elements for hiDpi modes
- Fixed: Memory leak while tagging OGG files
- Fixed: Support for WMA files
- Updated OpenSSL libs
- Translation: German
更新時間：2019-05-21
更新細節：
更新時間：2019-05-19
更新細節：
更新時間：2019-05-14
更新細節：
What's new in this version:
New:
- Compatible unit added: DDJ-200 (plug-and-play support)
Improved:
- Pitch Bend sensitivity when the XDJ-RX2 is connected
Fixed:
- Letterboxed video was partly blacked out when zooming in using Touch FX
- Improved stability and fixes for other minor issues
更新時間：2019-05-14
更新細節：
What's new in this version:
New:
- Compatible unit added: DDJ-200 (plug-and-play support)
Improved:
- Pitch Bend sensitivity when the XDJ-RX2 is connected
Fixed:
- Letterboxed video was partly blacked out when zooming in using Touch FX
- Improved stability and fixes for other minor issues
更新時間：2019-04-24
更新細節：
What's new in this version:
- Certificate: fixed SAN being duplicated on status change (introduced in v6.44
- Conntrack: fixed "loose-tcp-tracking" parameter not taken in action (introduced in v6.44
- dhcpv4-server: fixed commenting option for alerts
- dhcpv6-server: fixed binding setting update from RADIUS
- ike1: improved stability for transport mode policies on initiator side
- ipsec: fixed freshly created identity not taken in action (introduced in v6.44
- ipsec: fixed possible configuration corruption after import (introduced in v6.44
- ipv6: adjusted IPv6 route cache max size
- ipv6: improved IPv6 neighbor table updating process
- lte: reset LTE modem only when SIM slot is changed on dual SIM slot devices
- rb2011: removed "sfp-led" from "System/LEDs" menu
- smb: fixed possible buffer overflow
- snmp: added "radio-name" (mtxrWlRtabRadioName OID support
- ssh: added "both", "local" and "remote" options for "forwarding-enabled" parameter
- ssh: do not generate host key on configuration export
- ssh: fixed multiline non-interactive command execution
- Switch: fixed possible crash when interface state changes and DHCP Snooping is enabled
- Userman: updated authorize.net gateway DNS name
- Wireless: added support for US FCC UNII-2 and Canada country profiles for LHG-5HPnD-US, RBLHG-5HPnD-XL-US and SXTsq5HPnD-US devices
- Wireless: improved wireless country settings for EU countries
更新時間：2019-04-22
更新細節：
What's new in this version:
Compatibility notes:
- Unpickling while loading requires explicit opt-in
- The functions np.load, and np.lib.format.read_array take an allow_pickle keyword which now defaults to False in response to CVE-2019-6446.
Improvements:
- Covariance in random.mvnormal cast to double
- This should make the tolerance used when checking the singular values of the covariance matrix more meaningful.
Changes:
- __array_interface__ offset now works as documented
- The interface may use an offset value that was previously mistakenly ignored.