Combining template parameters deduction with default template parameters
I have a question how I could combine template parameters
deduction with setting default values for template parameters. I
will start directly from a piece of code.
string decodeURICustom(string allowedSpecChars = null, bool
formEncoding = false, T)(T source) pure
{
//Some processing
}
I want parameter T be deduced from context (T will be string,
dstring, etc)
And then I want to add some aliases with specialised arguments.
alias decodeURICustom!(!$'()*+,;=) decodeURIHost;
alias encodeURICustom!(!$'()*+,;=) encodeURIHost;
alias decodeURICustom!(!$'()*+,;=:@/) decodeURIPath;
alias encodeURICustom!(!$'()*+,;=:@/) encodeURIPath;
But when using decodeURICustom template directly I want to be
able not set template arguments.
void main()
{
string str = http://www.dlang.org;;
string result = decodeURICustom(str);
}
How could I do this? Is it possible. The example above doesn't
complie.
Of course I could create another template function.
string decodeURIHost(T)(T source)
{
}
Re: Combining template parameters deduction with default template parameters
string decodeURIHost(T)(T source)
{
}
But I like it less and I still don't know how to combine template
params deduction with setting second param.
string decodeURIHost(T, bool formEncoding)(T source) {}
Re: Combining template parameters deduction with default template parameters
On 3/23/14, Uranuz neura...@gmail.com wrote:
I have a question how I could combine template parameters
deduction with setting default values for template parameters. I
will start directly from a piece of code.
You can use eponymous templates for this. E.g.:
-
template decodeURICustom(string allowedSpecChars = null, bool
formEncoding = false)
{
string decodeURICustom(T)(T source) pure
{
return ;
}
}
alias decodeURICustom!(!$'()*+,;=) decodeURIHost;
void main()
{
string str= http://www.dlang.org;;
string result = decodeURICustom(str);
}
-
Re: Combining template parameters deduction with default template parameters
On Sunday, 23 March 2014 at 11:15:13 UTC, Andrej Mitrovic wrote:
On 3/23/14, Uranuz neura...@gmail.com wrote:
I have a question how I could combine template parameters
deduction with setting default values for template parameters.
I
will start directly from a piece of code.
You can use eponymous templates for this. E.g.:
-
template decodeURICustom(string allowedSpecChars = null, bool
formEncoding = false)
{
string decodeURICustom(T)(T source) pure
{
return ;
}
}
alias decodeURICustom!(!$'()*+,;=) decodeURIHost;
void main()
{
string str= http://www.dlang.org;;
string result = decodeURICustom(str);
}
-
Yes. I like it more that ivoking one function from another. But
this trick not working in DMD 2.063 as I understand.
Re: Combining template parameters deduction with default template parameters
On Sun, Mar 23, 2014 at 12:23 PM, Uranuz neura...@gmail.com wrote: Yes. I like it more that ivoking one function from another. But this trick not working in DMD 2.063 as I understand. Is there any reason to still use 2.063 (honest question)? The current one is 2.065 with .066 in alpha state. .063 is almost a year old.
Re: Combining template parameters deduction with default template parameters
On Sunday, 23 March 2014 at 12:43:35 UTC, Philippe Sigaud wrote: On Sun, Mar 23, 2014 at 12:23 PM, Uranuz neura...@gmail.com wrote: Yes. I like it more that ivoking one function from another. But this trick not working in DMD 2.063 as I understand. Is there any reason to still use 2.063 (honest question)? The current one is 2.065 with .066 in alpha state. .063 is almost a year old. No reason. I just had ability to check it in .063 and noticed this fact. Now I use .064 because of some breaking changes in std.json. May be there will be some minor release to fix this (I hope). So I checked only .063, .064.
