digitalmars.D.bugs - [Issue 7133] New: [tdpl] There should be no empty statement
- d-bugmail puremagic.com (21/21) Dec 18 2011 http://d.puremagic.com/issues/show_bug.cgi?id=7133
- d-bugmail puremagic.com (15/15) Dec 18 2011 http://d.puremagic.com/issues/show_bug.cgi?id=7133
- d-bugmail puremagic.com (7/7) Dec 18 2011 http://d.puremagic.com/issues/show_bug.cgi?id=7133
- d-bugmail puremagic.com (6/6) Dec 18 2011 http://d.puremagic.com/issues/show_bug.cgi?id=7133
- d-bugmail puremagic.com (7/7) Dec 18 2011 http://d.puremagic.com/issues/show_bug.cgi?id=7133
- d-bugmail puremagic.com (15/17) Dec 19 2011 http://d.puremagic.com/issues/show_bug.cgi?id=7133
- d-bugmail puremagic.com (12/14) Dec 19 2011 http://d.puremagic.com/issues/show_bug.cgi?id=7133
- d-bugmail puremagic.com (13/19) Dec 19 2011 http://d.puremagic.com/issues/show_bug.cgi?id=7133
- d-bugmail puremagic.com (13/17) Dec 19 2011 http://d.puremagic.com/issues/show_bug.cgi?id=7133
- d-bugmail puremagic.com (23/26) Dec 24 2011 http://d.puremagic.com/issues/show_bug.cgi?id=7133
- d-bugmail puremagic.com (12/14) Dec 25 2011 http://d.puremagic.com/issues/show_bug.cgi?id=7133
- d-bugmail puremagic.com (14/14) Dec 29 2011 http://d.puremagic.com/issues/show_bug.cgi?id=7133
http://d.puremagic.com/issues/show_bug.cgi?id=7133 Summary: [tdpl] There should be no empty statement Product: D Version: D2 Platform: Other OS/Version: Mac OS X Status: NEW Severity: normal Priority: P2 Component: DMD AssignedTo: nobody puremagic.com ReportedBy: andrei metalanguage.com 18:17:17 PST --- The statement ";" should not exist. It is never needed, never useful, and in most cases the compiler requires it to be replaced with '{}'. Walter and I agreed on all of the above so ";" is not present in TDPL. It should be slowly deprecated and ultimately removed from D. It is just junk in the trunk. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Dec 18 2011
http://d.puremagic.com/issues/show_bug.cgi?id=7133 Jonathan M Davis <jmdavisProg gmx.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jmdavisProg gmx.com PST --- The one case that I'm aware of where some have argued for its value is labels. e.g. LABEL:; Since labels require a statement, ; makes it so that you can you can use a label without really having a statement. I'm not sure that that merits keeping it however, since in every other use case that I can think of, it has no value. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Dec 18 2011
http://d.puremagic.com/issues/show_bug.cgi?id=7133 PST --- I didn't think that that worked, since {} isn't a statement (at least, as far as I know, it isn't), but if it works, it's certainly better. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Dec 18 2011
http://d.puremagic.com/issues/show_bug.cgi?id=7133 20:06:48 PST --- {} is the empty statement in D. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Dec 18 2011
http://d.puremagic.com/issues/show_bug.cgi?id=7133 PST --- Is that different from C++? I thought that {} was just an empty scope without any statements in it at all in both C/C++ and D. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Dec 18 2011
http://d.puremagic.com/issues/show_bug.cgi?id=7133 Stewart Gordon <smjg iname.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |smjg iname.com Platform|Other |All OS/Version|Mac OS X |All Severity|normal |enhancementIs that different from C++? I thought that {} was just an empty scope without any statements in it at all in both C/C++ and D.It is, but in 100% of cases the compiler can optimise away that empty scope and so it's equivalent to an empty statement. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Dec 19 2011
http://d.puremagic.com/issues/show_bug.cgi?id=7133 jakobovrum gmail.com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakobovrum gmail.comI didn't think that that worked, since {} isn't a statement (at least, as far as I know, it isn't), but if it works, it's certainly better.It is indeed a statement, it's called a block statement, also in D: http://dlang.org/statement.html#BlockStatement -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Dec 19 2011
http://d.puremagic.com/issues/show_bug.cgi?id=7133 timon.gehr gmx.ch changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |timon.gehr gmx.chThe statement ";" should not exist. It is never needed, never useful, and in most cases the compiler requires it to be replaced with '{}'. Walter and I agreed on all of the above so ";" is not present in TDPL. It should be slowly deprecated and ultimately removed from D. It is just junk in the trunk.I think it is useful. This looks odd: int i = 2; for({} i<2; i++){} -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Dec 19 2011
http://d.puremagic.com/issues/show_bug.cgi?id=7133I think it is useful. This looks odd: int i = 2; for({} i<2; i++){}The ; you're replacing there isn't a statement - it's something explicitly allowed by the ForStatement syntax. ForStatement: for (Initialize Testopt ; Incrementopt) ScopeStatement Initialize: ; NoScopeNonEmptyStatement -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Dec 19 2011
http://d.puremagic.com/issues/show_bug.cgi?id=7133 Don <clugdbug yahoo.com.au> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |clugdbug yahoo.com.auLABEL: {} is as good and marginally nicer.Bear in mind that it only ever happens at the end of a block, so the next character is always a }. The existing label syntax needs to be retained for asm statements, though, since they don't have {}. asm { jmp done; done: ; } which is already ugly, and will look really silly when nude ; statements are gone. I wish we could get rid of that silly semicolon. In fact the oddity is that labels are considered to be statements, yet they don't end with a semicolon. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Dec 24 2011
http://d.puremagic.com/issues/show_bug.cgi?id=7133 ---In fact the oddity is that labels are considered to be statements, yet they don't end with a semicolon.Block, if, while, do, for, foreach, switch, with, etc. Most types of statements don't end with a semicolon. Remember that the label statement is: Identifier : NoScopeStatement The following statement is a sub-statement of the label statement. It's not any more inconsistent than other statements with sub-statements. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Dec 25 2011
http://d.puremagic.com/issues/show_bug.cgi?id=7133 Walter Bright <bugzilla digitalmars.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED CC| |bugzilla digitalmars.com Resolution| |FIXED 02:23:17 PST --- I've added a warning for empty statements, but left the ; after the label as allowed. https://github.com/D-Programming-Language/dmd/commit/39d850a65ea5766a7cbd7bbe2fc8ed8e784fcdee -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Dec 29 2011