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Groups > comp.lang.c > #162491

Re: Freeing a dynamically allocated array of structs within a struct in C

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Am 29.08.2021 um 20:01 schrieb Bonita Montero:
> Use a proper language:
> 
> #include <memory>
> #include <string>
> 
> using namespace std;
> 
> struct deck_entry
> {
>      string key,
>             value;
> };
> 
> using up_de_t = unique_ptr<deck_entry>;
> 
> up_de_t parse_deck_entry( string const &parse )
> {
>      size_t delimiterBegin = parse.find( ": " );
>      if( delimiterBegin == string::npos )
>          return up_de_t();
>      up_de_t de = make_unique<deck_entry>();
>      de->key    = string( parse.begin(), parse.begin() + delimiterBegin );
>      de->value  = string( parse.begin() + (delimiterBegin + 2), 
> parse.end() );
>      return de;
> }
> 
> Full saftety if an allocation fails, automatic deallocation of
> all allocated memory.

And now more elegance and performance:

#include <memory>
#include <string>

using namespace std;

struct deck_entry
{
	string key,
	       value;
	deck_entry( string &&key, string &&value ) :
		key( key ),
		value( value )
	{
	}
};

using up_de_t = unique_ptr<deck_entry>;

up_de_t parse_deck_entry( string const &parse )
{
	size_t delimiter = parse.find( ": " );
	if( delimiter == string::npos || !delimiter || delimiter == 
parse.size() - 2 )
		return up_de_t();
	return make_unique<deck_entry>( string( parse.begin(), parse.begin() + 
delimiter ),
	                                string( parse.begin() + (delimiter + 
2), parse.end() ) );
}

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Freeing a dynamically allocated array of structs within a struct in C Bithov Vinu Student <vinub@calday.co.uk> - 2021-08-29 08:34 -0700
  Re: Freeing a dynamically allocated array of structs within a struct in C Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-08-29 15:43 +0000
    Re: Freeing a dynamically allocated array of structs within a struct in C Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-08-29 16:12 +0000
      Re: Freeing a dynamically allocated array of structs within a struct in C Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-09-06 05:46 -0700
  Re: Freeing a dynamically allocated array of structs within a struct in C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-08-29 17:17 +0100
  Re: Freeing a dynamically allocated array of structs within a struct in C Bonita Montero <Bonita.Montero@gmail.com> - 2021-08-29 20:01 +0200
    Re: Freeing a dynamically allocated array of structs within a struct in C Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-08-29 18:21 +0000
      Re: Freeing a dynamically allocated array of structs within a struct in C Bonita Montero <Bonita.Montero@gmail.com> - 2021-08-29 20:34 +0200
    Re: Freeing a dynamically allocated array of structs within a struct in C Bonita Montero <Bonita.Montero@gmail.com> - 2021-08-30 09:01 +0200
      Re: Freeing a dynamically allocated array of structs within a struct in C Robert Latest <boblatest@yahoo.com> - 2021-08-31 05:44 +0000
      Re: Freeing a dynamically allocated array of structs within a struct in C Kaz Kylheku <563-365-8930@kylheku.com> - 2021-08-31 07:50 +0000
        Re: Freeing a dynamically allocated array of structs within a struct in C Bonita Montero <Bonita.Montero@gmail.com> - 2021-08-31 10:59 +0200
    Re: Freeing a dynamically allocated array of structs within a struct in C Bonita Montero <Bonita.Montero@gmail.com> - 2021-08-30 09:45 +0200
      Re: Freeing a dynamically allocated array of structs within a struct in C Bonita Montero <Bonita.Montero@gmail.com> - 2021-08-30 10:15 +0200
  Re: Freeing a dynamically allocated array of structs within a struct in C Kaz Kylheku <563-365-8930@kylheku.com> - 2021-08-29 18:14 +0000
  Re: Freeing a dynamically allocated array of structs within a struct in C Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-08-29 18:18 +0000
  Re: Freeing a dynamically allocated array of structs within a struct in C Barry Schwarz <schwarzb@delq.com> - 2021-08-29 11:44 -0700
    Re: Freeing a dynamically allocated array of structs within a struct in C Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-08-29 19:04 +0000
      Re: Freeing a dynamically allocated array of structs within a struct in C Barry Schwarz <schwarzb@delq.com> - 2021-08-29 14:15 -0700
        Re: Freeing a dynamically allocated array of structs within a struct in C scott@slp53.sl.home (Scott Lurndal) - 2021-08-29 21:19 +0000
          Re: Freeing a dynamically allocated array of structs within a struct in C Barry Schwarz <schwarzb@delq.com> - 2021-08-29 18:14 -0700
        Re: Freeing a dynamically allocated array of structs within a struct in C Bonita Montero <Bonita.Montero@gmail.com> - 2021-08-30 18:27 +0200
      Re: Freeing a dynamically allocated array of structs within a struct in C Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-08-30 16:17 +0000
        Re: Freeing a dynamically allocated array of structs within a struct in C James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-08-30 14:14 -0400
          Re: Freeing a dynamically allocated array of structs within a struct in C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-08-30 11:39 -0700
            Re: Freeing a dynamically allocated array of structs within a struct in C James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-08-31 10:08 -0400
            Re: Freeing a dynamically allocated array of structs within a struct in C Kaz Kylheku <563-365-8930@kylheku.com> - 2021-09-01 04:40 +0000
              Re: Freeing a dynamically allocated array of structs within a struct in C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-09-01 00:57 -0700
          Re: Freeing a dynamically allocated array of structs within a struct in C Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-08-30 19:16 +0000
            Re: Freeing a dynamically allocated array of structs within a struct in C Manfred <noname@add.invalid> - 2021-08-30 21:49 +0200
          Re: Freeing a dynamically allocated array of structs within a struct in C "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-08-30 12:49 -0700
          Re: Freeing a dynamically allocated array of structs within a struct in C scott@slp53.sl.home (Scott Lurndal) - 2021-08-30 22:31 +0000
            Re: Freeing a dynamically allocated array of structs within a struct in C Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-09-30 07:04 -0700
    Re: Freeing a dynamically allocated array of structs within a struct in C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-08-29 15:38 -0700
      Re: Freeing a dynamically allocated array of structs within a struct in C Manfred <noname@add.invalid> - 2021-08-30 14:21 +0200
      Re: Freeing a dynamically allocated array of structs within a struct in C Bonita Montero <Bonita.Montero@gmail.com> - 2021-08-30 18:29 +0200
        Re: Freeing a dynamically allocated array of structs within a struct in C Bart <bc@freeuk.com> - 2021-08-30 18:30 +0100
          Re: Freeing a dynamically allocated array of structs within a struct in C Bonita Montero <Bonita.Montero@gmail.com> - 2021-08-31 04:22 +0200

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