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August 29, 2005 std.boxer type query | ||||
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I'm having a mental block and for the life of me a cannot work out how to code a simple and efficient test for the data type of a Box.
I want to do this sort of thing ...
Box foo;
. . .
if (foo.type == dchar[])
{
. . .
}
Help!
--
Derek Parnell
Melbourne, Australia
30/08/2005 2:22:53 AM
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August 29, 2005 Re: std.boxer type query | ||||
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Posted in reply to Derek Parnell | In article <1fv0hytva73p0.13560ith3id22.dlg@40tude.net>, Derek Parnell says... > >I'm having a mental block and for the life of me a cannot work out how to code a simple and efficient test for the data type of a Box. > >I want to do this sort of thing ... > > Box foo; > . . . > if (foo.type == dchar[]) > { > . . . > } > >Help! > >-- >Derek Parnell >Melbourne, Australia >30/08/2005 2:22:53 AM Derek, I hope you find this example code useful: # // boxtype.d # private import std.stdio; # private import std.boxer; # # int main() # { # Box foo = box("This is a test!"d); # # // ... # if (foo.type() == typeid(dchar[])) # writefln("dchar[] value=%s", unbox!(dchar[])(foo)); # else # writefln(" not a dchar[] value"); # # return 0; # } Output: ------- C:\dmd>dmd boxtype.d -release C:\dmd\bin\..\..\dm\bin\link.exe boxtype,,,user32+kernel32/noi; C:\dmd>boxtype dchar[] value=This is a test! C:\dmd> David L. ------------------------------------------------------------------- "Dare to reach for the Stars...Dare to Dream, Build, and Achieve!" ------------------------------------------------------------------- MKoD: http://spottedtiger.tripod.com/D_Language/D_Main_XP.html |
August 29, 2005 Re: std.boxer type query | ||||
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Posted in reply to Derek Parnell | In article <1fv0hytva73p0.13560ith3id22.dlg@40tude.net>, Derek Parnell says... > >I'm having a mental block and for the life of me a cannot work out how to code a simple and efficient test for the data type of a Box. > >I want to do this sort of thing ... > > Box foo; > . . . > if (foo.type == dchar[]) > { > . . . > } > >Help! > >-- >Derek Parnell >Melbourne, Australia >30/08/2005 2:22:53 AM Opps! Line: if (foo.type() == typeid(dchar[])) should be: if (foo.type() is typeid(dchar[])) You may find some other useful code from my Box-Xtras section of my site: http://spottedtiger.tripod.com/D_Language/D_BoxXtras_Support_Projects_XP.html David L. ------------------------------------------------------------------- "Dare to reach for the Stars...Dare to Dream, Build, and Achieve!" ------------------------------------------------------------------- MKoD: http://spottedtiger.tripod.com/D_Language/D_Main_XP.html |
August 30, 2005 Re: std.boxer type query | ||||
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Posted in reply to David L. Davis | On Mon, 29 Aug 2005 17:25:47 +0000 (UTC), David L. Davis wrote: > In article <1fv0hytva73p0.13560ith3id22.dlg@40tude.net>, Derek Parnell says... >> >>I'm having a mental block and for the life of me a cannot work out how to code a simple and efficient test for the data type of a Box. >> >>I want to do this sort of thing ... >> >> Box foo; >> . . . >> if (foo.type == dchar[]) >> { >> . . . >> } >> >>Help! >> >>-- >>Derek Parnell >>Melbourne, Australia >>30/08/2005 2:22:53 AM > > Opps! > > Line: if (foo.type() == typeid(dchar[])) > should be: if (foo.type() is typeid(dchar[])) Thanks. I forgot about 'typeid()'. This is my first play with boxes. A pity about the -release restriction. I also found out that you must not have -unittest either. > You may find some other useful code from my Box-Xtras section of my site: http://spottedtiger.tripod.com/D_Language/D_BoxXtras_Support_Projects_XP.html Thanks. I'll have a peek or two. -- Derek Parnell Melbourne, Australia 30/08/2005 10:14:47 PM |
September 02, 2005 Re: std.boxer type query | ||||
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Posted in reply to Derek Parnell | Derek Parnell wrote:
> On Mon, 29 Aug 2005 17:25:47 +0000 (UTC), David L. Davis wrote:
>
>
>>In article <1fv0hytva73p0.13560ith3id22.dlg@40tude.net>, Derek Parnell says...
>>
>>>I'm having a mental block and for the life of me a cannot work out how to
>>>code a simple and efficient test for the data type of a Box.
>>>
>>>I want to do this sort of thing ...
>>>
>>> Box foo;
>>> . . .
>>> if (foo.type == dchar[])
>>> {
>>> . . . }
>>>
>>>Help!
>>>
>>>--
>>>Derek Parnell
>>>Melbourne, Australia
>>>30/08/2005 2:22:53 AM
>>
>>Opps!
>>
>>Line: if (foo.type() == typeid(dchar[]))
>>should be: if (foo.type() is typeid(dchar[]))
>
>
> Thanks. I forgot about 'typeid()'. This is my first play with boxes. A pity
> about the -release restriction. I also found out that you must not have
> -unittest either.
You can get around this restriction without recompiling Phobos by putting "extern (C) void assert_3std5boxer () { }" in your code. Hopefully this will be one of the fixes in 0.130.
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September 03, 2005 Re: std.boxer type query | ||||
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Posted in reply to Burton Radons | In article <df90su$30te$1@digitaldaemon.com>, Burton Radons says... > >Derek Parnell wrote: >> On Mon, 29 Aug 2005 17:25:47 +0000 (UTC), David L. Davis wrote: >> >> >>>In article <1fv0hytva73p0.13560ith3id22.dlg@40tude.net>, Derek Parnell says... >>> >>>>I'm having a mental block and for the life of me a cannot work out how to code a simple and efficient test for the data type of a Box. >>>> >>>>I want to do this sort of thing ... >>>> >>>> Box foo; >>>> . . . >>>> if (foo.type == dchar[]) >>>> { >>>> . . . >>>> } >>>> >>>>Help! >>>> >>>>-- >>>>Derek Parnell >>>>Melbourne, Australia >>>>30/08/2005 2:22:53 AM >>> >>>Opps! >>> >>>Line: if (foo.type() == typeid(dchar[])) >>>should be: if (foo.type() is typeid(dchar[])) >> >> >> Thanks. I forgot about 'typeid()'. This is my first play with boxes. A pity about the -release restriction. I also found out that you must not have -unittest either. > >You can get around this restriction without recompiling Phobos by putting "extern (C) void assert_3std5boxer () { }" in your code. Hopefully this will be one of the fixes in 0.130. Thanks Burton!! :) It's very helpful. David L. ------------------------------------------------------------------- "Dare to reach for the Stars...Dare to Dream, Build, and Achieve!" ------------------------------------------------------------------- MKoD: http://spottedtiger.tripod.com/D_Language/D_Main_XP.html |
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