What is the following list of behind the scenes inside the range-based for loop?

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP












58















I am studying C++ and I saw a range-based for loop like this:



for (int i : 1,2,3,4,5)
std::cout << i << ' ';


What is the temporary 1,2,3,4,5 in the for loop behind the scenes?










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  • 6





    try true, false for kicks.

    – user1095108
    Jan 7 at 19:50






  • 1





    @user1095108 It's fine, But i think It is simple and understandable to everyone .

    – Hamza.S
    Jan 7 at 23:59















58















I am studying C++ and I saw a range-based for loop like this:



for (int i : 1,2,3,4,5)
std::cout << i << ' ';


What is the temporary 1,2,3,4,5 in the for loop behind the scenes?










share|improve this question



















  • 6





    try true, false for kicks.

    – user1095108
    Jan 7 at 19:50






  • 1





    @user1095108 It's fine, But i think It is simple and understandable to everyone .

    – Hamza.S
    Jan 7 at 23:59













58












58








58


8






I am studying C++ and I saw a range-based for loop like this:



for (int i : 1,2,3,4,5)
std::cout << i << ' ';


What is the temporary 1,2,3,4,5 in the for loop behind the scenes?










share|improve this question
















I am studying C++ and I saw a range-based for loop like this:



for (int i : 1,2,3,4,5)
std::cout << i << ' ';


What is the temporary 1,2,3,4,5 in the for loop behind the scenes?







c++ for-loop






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Jan 8 at 11:25









Rakete1111

34.3k981117




34.3k981117










asked Jan 7 at 8:21









Hamza.SHamza.S

464211




464211







  • 6





    try true, false for kicks.

    – user1095108
    Jan 7 at 19:50






  • 1





    @user1095108 It's fine, But i think It is simple and understandable to everyone .

    – Hamza.S
    Jan 7 at 23:59












  • 6





    try true, false for kicks.

    – user1095108
    Jan 7 at 19:50






  • 1





    @user1095108 It's fine, But i think It is simple and understandable to everyone .

    – Hamza.S
    Jan 7 at 23:59







6




6





try true, false for kicks.

– user1095108
Jan 7 at 19:50





try true, false for kicks.

– user1095108
Jan 7 at 19:50




1




1





@user1095108 It's fine, But i think It is simple and understandable to everyone .

– Hamza.S
Jan 7 at 23:59





@user1095108 It's fine, But i think It is simple and understandable to everyone .

– Hamza.S
Jan 7 at 23:59












2 Answers
2






active

oldest

votes


















71














The object here is an instance of std::initializer_list<int>. From the reference (emphasis mine):




A std::initializer_list object is automatically constructed when:



a braced-init-list is used to list-initialize an object, where the corresponding constructor accepts an std::initializer_list parameter



a braced-init-list is used as the right operand of assignment or as a function call argument, and the corresponding assignment operator/function accepts an std::initializer_list parameter



a braced-init-list is bound to auto, including in a ranged for loop







share|improve this answer


















  • 2





    The braced initializer list is not an object, but I guess pretending that it is is fine in this case.

    – Rakete1111
    Jan 8 at 8:51


















18















What is the temporary 1,2,3,4,5 in the for loop behind the scenes?




a std::initializer_list<int>






share|improve this answer




















  • 5





    Could have added some text from that link.

    – CodeIt
    Jan 8 at 2:14










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2 Answers
2






active

oldest

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2 Answers
2






active

oldest

votes









active

oldest

votes






active

oldest

votes









71














The object here is an instance of std::initializer_list<int>. From the reference (emphasis mine):




A std::initializer_list object is automatically constructed when:



a braced-init-list is used to list-initialize an object, where the corresponding constructor accepts an std::initializer_list parameter



a braced-init-list is used as the right operand of assignment or as a function call argument, and the corresponding assignment operator/function accepts an std::initializer_list parameter



a braced-init-list is bound to auto, including in a ranged for loop







share|improve this answer


















  • 2





    The braced initializer list is not an object, but I guess pretending that it is is fine in this case.

    – Rakete1111
    Jan 8 at 8:51















71














The object here is an instance of std::initializer_list<int>. From the reference (emphasis mine):




A std::initializer_list object is automatically constructed when:



a braced-init-list is used to list-initialize an object, where the corresponding constructor accepts an std::initializer_list parameter



a braced-init-list is used as the right operand of assignment or as a function call argument, and the corresponding assignment operator/function accepts an std::initializer_list parameter



a braced-init-list is bound to auto, including in a ranged for loop







share|improve this answer


















  • 2





    The braced initializer list is not an object, but I guess pretending that it is is fine in this case.

    – Rakete1111
    Jan 8 at 8:51













71












71








71







The object here is an instance of std::initializer_list<int>. From the reference (emphasis mine):




A std::initializer_list object is automatically constructed when:



a braced-init-list is used to list-initialize an object, where the corresponding constructor accepts an std::initializer_list parameter



a braced-init-list is used as the right operand of assignment or as a function call argument, and the corresponding assignment operator/function accepts an std::initializer_list parameter



a braced-init-list is bound to auto, including in a ranged for loop







share|improve this answer













The object here is an instance of std::initializer_list<int>. From the reference (emphasis mine):




A std::initializer_list object is automatically constructed when:



a braced-init-list is used to list-initialize an object, where the corresponding constructor accepts an std::initializer_list parameter



a braced-init-list is used as the right operand of assignment or as a function call argument, and the corresponding assignment operator/function accepts an std::initializer_list parameter



a braced-init-list is bound to auto, including in a ranged for loop








share|improve this answer












share|improve this answer



share|improve this answer










answered Jan 7 at 8:25









taskinoortaskinoor

39.6k799128




39.6k799128







  • 2





    The braced initializer list is not an object, but I guess pretending that it is is fine in this case.

    – Rakete1111
    Jan 8 at 8:51












  • 2





    The braced initializer list is not an object, but I guess pretending that it is is fine in this case.

    – Rakete1111
    Jan 8 at 8:51







2




2





The braced initializer list is not an object, but I guess pretending that it is is fine in this case.

– Rakete1111
Jan 8 at 8:51





The braced initializer list is not an object, but I guess pretending that it is is fine in this case.

– Rakete1111
Jan 8 at 8:51













18















What is the temporary 1,2,3,4,5 in the for loop behind the scenes?




a std::initializer_list<int>






share|improve this answer




















  • 5





    Could have added some text from that link.

    – CodeIt
    Jan 8 at 2:14















18















What is the temporary 1,2,3,4,5 in the for loop behind the scenes?




a std::initializer_list<int>






share|improve this answer




















  • 5





    Could have added some text from that link.

    – CodeIt
    Jan 8 at 2:14













18












18








18








What is the temporary 1,2,3,4,5 in the for loop behind the scenes?




a std::initializer_list<int>






share|improve this answer
















What is the temporary 1,2,3,4,5 in the for loop behind the scenes?




a std::initializer_list<int>







share|improve this answer














share|improve this answer



share|improve this answer








edited Jan 7 at 19:47

























answered Jan 7 at 8:23









Jarod42Jarod42

115k12101182




115k12101182







  • 5





    Could have added some text from that link.

    – CodeIt
    Jan 8 at 2:14












  • 5





    Could have added some text from that link.

    – CodeIt
    Jan 8 at 2:14







5




5





Could have added some text from that link.

– CodeIt
Jan 8 at 2:14





Could have added some text from that link.

– CodeIt
Jan 8 at 2:14

















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