digitalmars.D.learn - Parameterized enum does not work

Andre (21/21) Jan 08 2015 Hi,

Daniel Kozak (2/23) Jan 08 2015 What are you trying to do?

Daniel Kozak (14/43) Jan 08 2015 OK I probably see it now :):

Daniel Kozak (15/59) Jan 08 2015 However this is only for compile time, if you want runtime

Andre (4/68) Jan 09 2015 Thanks a lot.

"Andre" <andre s-e-a-p.de> writes:

Hi,

Should following coding work?

string lpad(ubyte length, long n)
{
	import std.string: rightJustify;
	import std.conv: to;
	return rightJustify(to!string(n), length, '0');
}
	
enum lpad14(long n) = lpad(14, n);

void main()
{
	lpad14(123);
}

There is following error from dmd:

source\app.d(12): Error: template app.lpad14 cannot deduce 
function from argumen
t types !()(int), candidates are:
source\app.d(8):        app.lpad14(long n)

Kind regards
André

Jan 08 2015

"Daniel Kozak" <kozzi11 gmail.com> writes:

On Friday, 9 January 2015 at 06:17:53 UTC, Andre wrote:
 Hi,

 Should following coding work?

 string lpad(ubyte length, long n)
 {
 	import std.string: rightJustify;
 	import std.conv: to;
 	return rightJustify(to!string(n), length, '0');
 }
 	
 enum lpad14(long n) = lpad(14, n);

 void main()
 {
 	lpad14(123);
 }

 There is following error from dmd:

 source\app.d(12): Error: template app.lpad14 cannot deduce 
 function from argumen
 t types !()(int), candidates are:
 source\app.d(8):        app.lpad14(long n)

 Kind regards
 André

What are you trying to do?

Jan 08 2015

"Daniel Kozak" <kozzi11 gmail.com> writes:

On Friday, 9 January 2015 at 07:50:53 UTC, Daniel Kozak wrote:
 On Friday, 9 January 2015 at 06:17:53 UTC, Andre wrote:
 Hi,

 Should following coding work?

 string lpad(ubyte length, long n)
 {
 	import std.string: rightJustify;
 	import std.conv: to;
 	return rightJustify(to!string(n), length, '0');
 }
 	
 enum lpad14(long n) = lpad(14, n);

 void main()
 {
 	lpad14(123);
 }

 There is following error from dmd:

 source\app.d(12): Error: template app.lpad14 cannot deduce 
 function from argumen
 t types !()(int), candidates are:
 source\app.d(8):        app.lpad14(long n)

 Kind regards
 André

 What are you trying to do?

OK I probably see it now :):

import std.stdio;

string lpad(ubyte length, long n)
{
     import std.string: rightJustify;
     import std.conv: to;
     return rightJustify(to!string(n), length, '0');
}

enum lpad14(long n) = lpad(14, n);

void main()
{
     writeln(lpad14!(123));
}

Jan 08 2015

"Daniel Kozak" <kozzi11 gmail.com> writes:

On Friday, 9 January 2015 at 07:52:50 UTC, Daniel Kozak wrote:
 On Friday, 9 January 2015 at 07:50:53 UTC, Daniel Kozak wrote:
 On Friday, 9 January 2015 at 06:17:53 UTC, Andre wrote:
 Hi,

 Should following coding work?

 string lpad(ubyte length, long n)
 {
 	import std.string: rightJustify;
 	import std.conv: to;
 	return rightJustify(to!string(n), length, '0');
 }
 	
 enum lpad14(long n) = lpad(14, n);

 void main()
 {
 	lpad14(123);
 }

 There is following error from dmd:

 source\app.d(12): Error: template app.lpad14 cannot deduce 
 function from argumen
 t types !()(int), candidates are:
 source\app.d(8):        app.lpad14(long n)

 Kind regards
 André

 What are you trying to do?

 OK I probably see it now :):

 import std.stdio;

 string lpad(ubyte length, long n)
 {
     import std.string: rightJustify;
     import std.conv: to;
     return rightJustify(to!string(n), length, '0');
 }

 enum lpad14(long n) = lpad(14, n);

 void main()
 {
     writeln(lpad14!(123));
 }

However this is only for compile time, if you want runtime 
version you need something like this:

import std.stdio;

string lpad(ubyte length)(long n)
{
     import std.string: rightJustify;
     import std.conv: to;
     return rightJustify(to!string(n), length, '0');
}

alias lpad14 = lpad!14;

void main()
{
     writeln(lpad14(123));
}

Jan 08 2015

"Andre" <andre s-e-a-p.de> writes:

Thanks a lot.

Kind regards
André

On Friday, 9 January 2015 at 07:59:51 UTC, Daniel Kozak wrote:
 On Friday, 9 January 2015 at 07:52:50 UTC, Daniel Kozak wrote:
 On Friday, 9 January 2015 at 07:50:53 UTC, Daniel Kozak wrote:
 On Friday, 9 January 2015 at 06:17:53 UTC, Andre wrote:
 Hi,

 Should following coding work?

 string lpad(ubyte length, long n)
 {
 	import std.string: rightJustify;
 	import std.conv: to;
 	return rightJustify(to!string(n), length, '0');
 }
 	
 enum lpad14(long n) = lpad(14, n);

 void main()
 {
 	lpad14(123);
 }

 There is following error from dmd:

 source\app.d(12): Error: template app.lpad14 cannot deduce 
 function from argumen
 t types !()(int), candidates are:
 source\app.d(8):        app.lpad14(long n)

 Kind regards
 André

 What are you trying to do?

 OK I probably see it now :):

 import std.stdio;

 string lpad(ubyte length, long n)
 {
    import std.string: rightJustify;
    import std.conv: to;
    return rightJustify(to!string(n), length, '0');
 }

 enum lpad14(long n) = lpad(14, n);

 void main()
 {
    writeln(lpad14!(123));
 }

 However this is only for compile time, if you want runtime 
 version you need something like this:

 import std.stdio;

 string lpad(ubyte length)(long n)
 {
     import std.string: rightJustify;
     import std.conv: to;
     return rightJustify(to!string(n), length, '0');
 }

 alias lpad14 = lpad!14;

 void main()
 {
     writeln(lpad14(123));
 }

Jan 09 2015

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digitalmars.D.learn - Parameterized enum does not work