MaplePrimes - comments on Post, Parser Differences

MaplePrimes - comments on Post, Parser Differences http://www.mapleprimes.com/posts/35973-Parser-Differences en-us 2026 Maplesoft, A Division of Waterloo Maple Inc. Maplesoft Document System Tue, 09 Jun 2026 20:59:31 GMT Tue, 09 Jun 2026 20:59:31 GMT The latest comments added to the Post, Parser Differences http://www.mapleprimes.com/images/mapleprimeswhite.jpg MaplePrimes - comments on Post, Parser Differences http://www.mapleprimes.com/posts/35973-Parser-Differences 1D vs Command Line http://www.mapleprimes.com/posts/35973-Parser-Differences?ref=Feed:MaplePrimes:Parser Differences:Comments#comment60144 Your penultimate example is surprising; it indicates that the Standard 1D parser differs from the command-line parser.  That is <pre> (**) proc(x); local a; end proc; </pre> is syntactically acceptable in command-line Maple. The latest comments added to the Post, Parser Differences 60144 Wed, 13 Jan 2010 11:07:05 Z Joe Riel Joe Riel syntactically acceptable? http://www.mapleprimes.com/posts/35973-Parser-Differences?ref=Feed:MaplePrimes:Parser Differences:Comments#comment60145 I get an error here: <pre> |\^/| Maple 13 (IBM INTEL NT) ._|\| |/|_. Copyright (c) Maplesoft, a division of Waterloo Maple Inc. 2009 \ MAPLE / All rights reserved. Maple is a trademark of <____ ____> Waterloo Maple Inc. | Type ? for help. > proc(x); local a; end proc; Error, unexpected local declaration in procedure body > quit memory used=0.9MB, alloc=1.1MB, time=0.06 </pre> <pre> </pre> The latest comments added to the Post, Parser Differences 60145 Wed, 13 Jan 2010 11:49:43 Z jakubi jakubi clarification http://www.mapleprimes.com/posts/35973-Parser-Differences?ref=Feed:MaplePrimes:Parser Differences:Comments#comment60146 I can explain a little more what I mean when I state that the following is a bug. <pre> # valid in 2D but not in 1D 2.sin(x); </pre> In 1D Maple notation, the decimal point has a greater precedence in parsing than does the infix `.` multiplication operator. So the above example is actually implicit multiplication by 2. the floating-point value. So, really, this is just another implicit multiplication example. The system has anomalies. Precedence is not merely an operator issue (see ?operators,precedence ), but is also a parsing issue. Where can one see it documented that the decimal point has a "greater parsing precedence" than does infix `.`, but less than infix `..`? <pre> # In either entry mode, this gives a range 2..sin(x); </pre> At the very least, this is a missing documentation bug (much like <a href="http://www.mapleprimes.com/blog/patrickt/todayilearnedaboutsoftwarefloatingpointnumbers#comment-30909">this</a> ). Why doesn't ?syntax mention 2D Math's implicit multiplication, or link to a 2D Math syntax page? While I'm at it, the ?syntax help-page describes the ambiguity of a^b^c and the need for brackets, in 1D Maple notation where it makes sense. But the ?operators,precedence help-page has the same explanation in 2D Math notation, where it doesn't make any sense. acer The latest comments added to the Post, Parser Differences 60146 Wed, 13 Jan 2010 21:12:49 Z acer acer linux 64 http://www.mapleprimes.com/posts/35973-Parser-Differences?ref=Feed:MaplePrimes:Parser Differences:Comments#comment60147 Interesting: <pre>     |\^/|     Maple 13 (X86 64 LINUX) ._|\|   |/|_. Copyright (c) Maplesoft, a division of Waterloo Maple Inc. 2009  \  MAPLE  /  All rights reserved. Maple is a trademark of  <____ ____>  Waterloo Maple Inc.       |       Type ? for help. > proc(x); local a; end proc;                                                  proc(x) local a;  end proc </pre> The latest comments added to the Post, Parser Differences 60147 Wed, 13 Jan 2010 22:15:07 Z Joe Riel Joe Riel or worrying... http://www.mapleprimes.com/posts/35973-Parser-Differences?ref=Feed:MaplePrimes:Parser Differences:Comments#comment60148 Do you think that this is a 64 bit issue? (later I will boot into Linux 32 and check). The latest comments added to the Post, Parser Differences 60148 Wed, 13 Jan 2010 22:22:49 Z jakubi jakubi In Linux 32 http://www.mapleprimes.com/posts/35973-Parser-Differences?ref=Feed:MaplePrimes:Parser Differences:Comments#comment60149 I get also an error message: <pre> |\^/| Maple 13 (IBM INTEL LINUX) ._|\| |/|_. Copyright (c) Maplesoft, a division of Waterloo Maple Inc. 2009 \ MAPLE / All rights reserved. Maple is a trademark of <____ ____> Waterloo Maple Inc. | Type ? for help. > proc(x); local a; end proc; Error, unexpected local declaration in procedure body </pre> The latest comments added to the Post, Parser Differences 60149 Thu, 14 Jan 2010 10:18:14 Z jakubi jakubi