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134 lines
2.8 KiB
HTML
134 lines
2.8 KiB
HTML
27 years ago
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<html>
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<head>
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<title> DrScheme Release Notes </title>
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</head>
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<body>
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<h2><img align=center
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src="http://www.cs.rice.edu/CS/PLT/packages/drscheme/logo.gif"
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alt="[DrScheme logo]">
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DrScheme Release Notes</h2>
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<p>
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<b>Current Release</b>:<tt> </tt> 42. <br>
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<b>Release Date</b>:<tt> </tt> June 8, 1996.
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<p>
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The following is a summary of the changes in this release
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from the previous one.
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<p>
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A reminder that bug reports should be sent to:<tt>
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plt-bugs@cs.rice.edu</tt>.
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<h4> DrScheme </h4>
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<ul>
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<li>
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Added a facility for single-stepping through small programs.<tt> </tt>
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See the
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<a href="http://www.cs.rice.edu/CS/PLT/packages/doc/donkey/donkey.html">
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documentation for the stepper</a>.
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<li>
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Major restructuring in the online documentation for the builtin
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gui-making classes.<tt> </tt>
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See the
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<a href="http://www.cs.rice.edu/CS/PLT/packages/doc/toolbox">
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MrEd ToolBox</a>.
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<li>
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Added a copy ring similar to emacs's "kill ring".<tt> </tt>
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For example, you can copy, cut or kill selection A,
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then copy B, then paste B, and then use Meta-Y to replace
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the pasted B with A.
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<li>
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Disabled editing before the prompt in the console (lower) window.
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<li>
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MacOS memory use greatly improved.
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<li>
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DrScheme's support for the <tt>do</tt> form currently requires
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the <tt><step></tt> part.<tt> </tt>
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This will be fixed in future versions.
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<li>
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DrScheme's support for <tt>(import ...)</tt> requires that the
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<tt>module</tt> specification be an identifier bound to
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a module value.
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<li>
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Added support for 16-bit color in XFree86 (unix only).
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<li>
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Dropped the decimal point in the version number.
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</ul>
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<h4> Underlying MzScheme Language </h4>
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<ul>
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<li>
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<tt>null</tt> is bound to the empty list.
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<li>
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Falling through a <tt>cond</tt> expression without matching any case
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is now an error.
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<li>
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The primitives <tt>binary-and</tt>, etc., are renamed to <tt>bitwise-and</tt>,
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<tt>bitwise-ior</tt>, <tt>bitwise-xor</tt>, and <tt>bitwise-not</tt>.
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<li>
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<tt>string=?</tt>, <tt>char=?</tt>, etc., are now multi-arity
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like numerical <tt>=</tt>, etc.
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<li>
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The braces { and } are treated as a matching set of parentheses,
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along with ( ) and [ ].
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</ul>
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For a more complete description of the mzscheme changes, see the
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<a href="http://www.cs.rice.edu/CS/PLT/packages/mzscheme/HISTORY">
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MzScheme release notes</a>.
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<h4> Analysis </h4>
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<ul>
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<li>
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The analysis now understands the types of most mzlib primitives.
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<li>
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Added an option to view parameterized types for functions.
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<li>
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Minor changes in the layout of some options and menus,
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and some minor options deleted.
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</ul>
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<h4> Bug Fixes </h4>
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<ul>
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<li>
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Fixed bugs in <tt>module</tt>, <tt>import</tt> and <tt>do</tt>.
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<li>
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Fixed <tt>dynamic-wind</tt> and <tt>call/ec</tt> for values.
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<li>
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Fixed <tt>read</tt> for strings containing #\nul.
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<li>
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Fixed annoying non-standard Windows beep.
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</ul>
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</body>
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</html>
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