posted by Eli Barzilay
Racket version 5.3.1 is now available from http://racket-lang.org/ Racket::
The case form dispatches on characters, fixnums, symbols, and keywords in logarithmic time. (Thanks to Jon Zeppieri.)
The new racket/format library provides new and improved string-formatting functions.
Logging tools include improved filtering support based on the name of a logger. A new define-logger form simplifies the use of named loggers. Forms such as log-debug now support string formatting.
The for forms now support #:break and #:final clauses.
The new PLTCOMPILEDROOTS environment variable configures the search path for compiled bytecode.
DrRacket::
Check Syntax now summarizes the documentation (i.e., the blue boxes) for the identifier at the insertion point in the top-right corner of the definitions window.
Check Syntax now runs continuously for programs that declare their language within the source. This mode has been available for several of the past releases, but now enabled by default.
DrRacket can spell-check string constants (enable this in the Edit menu).
Typed Racket::
Typed Racket interprets the Any type as a different contract. This may signal dynamic errors in some existing mixed typed/untyped programs. The normal fix is to replace a use of Any with a more specific types.
NaN is included in all of Typed Racket’s floating-point types, which makes precise floating-point types easier to use.
Typed Racket supports a cast operation with support for higher-order types.
Typed Racket provides the :query-type/args and :query-type/result utilities to explore types at the REPL.
Miscellaneous::
The compatibility collection provides features from Racket relatives, such as defmacro and mutable lists. These features are provided to ease porting code to Racket. Avoid them in modern Racket code.
Screenshots of the widgets provided by the Racket GUI library are included in the documentation. (Thanks to Diogo F. S. Ramos.)
FrTime was ported to racket #lang. (Thanks to Patrick Mahoney.)
Deprecation:: The following has been deprecated and will be removed in the January 2013 release:
planet command-line tool; use raco planet instead.The following has been deprecated and will be removed in the August 2013 release:
mzlib/class100 library; use racket/class instead.RetroSearch is an open source project built by @garambo | Open a GitHub Issue
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