• Tiberiu Gal (15/15) Jan 13 2014 what is the type returned by regex function?
• Brad Anderson (14/29) Jan 13 2014 The type is a template called Regex that is templated on the
• Tiberiu Gal (2/38) Jan 13 2014 thank you
• Nicolas Sicard (5/7) Jan 13 2014 Or: typeof(regex(""))
• Tiberiu Gal (5/20) Jan 13 2014 It's Regex!char

"Tiberiu Gal" <galtiberiu gmail.com> writes:

what is the type returned by regex function?
I want to store a regex member because I need to reuse it 
multiple times.
Can this be done?


class A {

   protected SomeTypeName regexPattern;


  void load() {
       string str;
       // obtain a regex pattern and store it as str.
       regexPattern = regex( str );
   }

   bool matches() {
     // use regexPattern
  }

}

"Brad Anderson" <eco gnuk.net> writes:

On Monday, 13 January 2014 at 20:53:55 UTC, Tiberiu Gal wrote:
 what is the type returned by regex function?
 I want to store a regex member because I need to reuse it 
 multiple times.
 Can this be done?


 class A {

   protected SomeTypeName regexPattern;


  void load() {
       string str;
       // obtain a regex pattern and store it as str.
       regexPattern = regex( str );
   }

   bool matches() {
     // use regexPattern
  }

 }

The type is a template called Regex that is templated on the 
character width.

struct A
{
	Regex!char re;
	
	this(string str)
	{
		re = regex(str);
	}
}

There is also std.traits.ReturnType you can use for more complex 
types or voldemort types.

"Tiberiu Gal" <galtiberiu gmail.com> writes:

On Monday, 13 January 2014 at 20:59:28 UTC, Brad Anderson wrote:
 On Monday, 13 January 2014 at 20:53:55 UTC, Tiberiu Gal wrote:
 what is the type returned by regex function?
 I want to store a regex member because I need to reuse it 
 multiple times.
 Can this be done?


 class A {

  protected SomeTypeName regexPattern;


 void load() {
      string str;
      // obtain a regex pattern and store it as str.
      regexPattern = regex( str );
  }

  bool matches() {
    // use regexPattern
 }

 }

 The type is a template called Regex that is templated on the 
 character width.

 struct A
 {
 	Regex!char re;
 	
 	this(string str)
 	{
 		re = regex(str);
 	}
 }

 There is also std.traits.ReturnType you can use for more 
 complex types or voldemort types.

thank you

"Nicolas Sicard" <dransic gmail.com> writes:

On Monday, 13 January 2014 at 20:59:28 UTC, Brad Anderson wrote:
 There is also std.traits.ReturnType you can use for more 
 complex types or voldemort types.

Or:  typeof(regex(""))

BTW, how does ReturnType handle overloads?

--
Nicolas

"Tiberiu Gal" <galtiberiu gmail.com> writes:

On Monday, 13 January 2014 at 20:53:55 UTC, Tiberiu Gal wrote:
 what is the type returned by regex function?
 I want to store a regex member because I need to reuse it 
 multiple times.
 Can this be done?


 class A {

   protected SomeTypeName regexPattern;


  void load() {
       string str;
       // obtain a regex pattern and store it as str.
       regexPattern = regex( str );
   }

   bool matches() {
     // use regexPattern
  }

 }


It's Regex!char

class A {
    protected Regex!char regexPattern;

...