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hello,
how do i handle strings, if i want to create the following:
#macro mymacro(this)
#if (this = "myvalue")
...
#end
#end
mymacro(myvalue)
any hints? thanks.
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marabou wrote:
>
> hello,
> how do i handle strings, if i want to create the following:
>
> #macro mymacro(this)
> #if (this = "myvalue")
> ...
> #end
> #end
>
> mymacro(myvalue)
>
or is there anything like strcmp(A,B) in v3.1?
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On Tue, 11 Dec 2001 20:20:05 +0100, marabou <not### [at] available yet> wrote:
> how do i handle strings, if i want to create the following:
> #macro mymacro(this) #if (this = "myvalue") ... #end #end
iirc it is well documented in 3.1
and it works the same in 3.5
check strcmp function
ABX
--
#declare _=function(a,b,x){((a^2)+(b^2))^.5-x}#default {pigment{color rgb 1}}
union{plane{y,-3}plane{-x,-3}finish{reflection 1 ambient 0}}isosurface{ //ABX
function{_(x-2,y,1)|_((x+y)*.7,z,.1)|_((x+y+2)*.7,z,.1)|_(x/2+y*.8+1.5,z,.1)}
contained_by{box{<0,-3,-.1>,<3,0,.1>}}translate z*15finish{ambient 1}}//POV35
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Włodzimierz ABX Skiba <abx### [at] babilonorg> wrote:
: check strcmp function
I agree that it would be really nice if (string1 = string2) would work.
I don't see why we should go the C-way in this thing. Better the C++-way.
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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Warp wrote:
> W³odzimierz ABX Skiba <abx### [at] babilonorg> wrote:
> : check strcmp function
>
> I agree that it would be really nice if (string1 = string2) would work.
> I don't see why we should go the C-way in this thing. Better the C++-way.
>
strcmp(a,b) is the C-way. (string1 == string2) give problems.
in the manual these functions relatively are hidden, that you have to
install your own search-engine about it.
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marabou <not### [at] availableyet> wrote:
: strcmp(a,b) is the C-way. (string1 == string2) give problems.
What problems? If I do it the C++-way, there are no problems:
string s1 = "abc";
string s2 = "def";
if(s1 == s2) { ... }
else { ... }
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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Warp wrote:
> marabou <not### [at] availableyet> wrote:
> : strcmp(a,b) is the C-way. (string1 == string2) give problems.
>
> What problems? If I do it the C++-way, there are no problems:
>
> string s1 = "abc";
> string s2 = "def";
>
> if(s1 == s2) { ... }
> else { ... }
>
sorry, i missunderstood your post. i thought you meant strcmp(a,b) is
c++-way.
in my opinion the c-way is better, because coders then have less problems
with type-casts.
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marabou <not### [at] availableyet> wrote:
: in my opinion the c-way is better, because coders then have less problems
: with type-casts.
The c-way is awful.
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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Warp wrote:
> The c-way is awful.
...but logical. (i think)
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marabou <not### [at] availableyet> wrote:
:> The c-way is awful.
: ...but logical. (i think)
So you would prefer it also this way:
int a=1, b=2;
if(intcmp(a, b) == 0) { ... }
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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It's a pain having to study C, when your teacher spends most time saying:
"next year, when you study C++, you will discover that this, this and this
has got a much more friendly syntax..."
--
Jonathan.
"Warp" <war### [at] tagpovrayorg> ha scritto nel messaggio
news:3c17c535@news.povray.org...
> marabou <not### [at] availableyet> wrote:
> :> The c-way is awful.
>
> : ...but logical. (i think)
>
> So you would prefer it also this way:
>
> int a=1, b=2;
>
> if(intcmp(a, b) == 0) { ... }
>
> --
> #macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
> rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
> ],13),8)-3,10>#end blob{N(array[6]{11117333955,
> 7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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"marabou" <not### [at] availableyet> wrote in message
news:3c17af7f@news.povray.org...
> Warp wrote:
>
> > marabou <not### [at] availableyet> wrote:
> > : strcmp(a,b) is the C-way. (string1 == string2) give problems.
> >
> > What problems? If I do it the C++-way, there are no problems:
> >
> > string s1 = "abc";
> > string s2 = "def";
> >
> > if(s1 == s2) { ... }
In this case, in C, you are comparing pointers.
whatever the content of S1 and S2 are, the result is false.
> > else { ... }
> >
> sorry, i missunderstood your post. i thought you meant strcmp(a,b) is
> c++-way.
> in my opinion the c-way is better, because coders then have less problems
> with type-casts.
>
Chaps.
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Chaps <cha### [at] yahoocom> wrote:
:> > string s1 = "abc";
:> > string s2 = "def";
:> >
:> > if(s1 == s2) { ... }
: In this case, in C, you are comparing pointers.
: whatever the content of S1 and S2 are, the result is false.
But C has no string class, so it can't be C. That's C++ code. And it works.
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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> But C has no string class, so it can't be C. That's C++ code. And it
works.
Dear Warp,
I know that.
I think that my english is too poor, so I misunderstand sometimes the
questions :o(, and I shorten always my answers :o).
Chaps
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