Removing item from array

[drewpts]

Hi. Thanks for great lib!
Is there support for removing item/items from array?

E.g.:

        json j;
        j["name"] = { "testname", "yetanothername" };
        j["name"].erase("testname");

$ ./a.out 
terminate called after throwing an instance of 'std::runtime_error'
what():  cannot use at with array

[mkwork]

Anyway, copy-pasted code detected. There are lying comments and wrong error message in this method.

[nlohmann]

There is currently no function to delete elements from an array. This should be offered to have a "symmetrical" feature set compared to objects.

The text of the exception you reported is correct: the type of j["name"] is an array, therefore "cannot use at with array" is correct.

[mkwork]

Hm, but there isn't used at()? Or i missunderstood you.

[nlohmann]

Oops... I'll fix that... :-)

[nlohmann]

Fixed the comment in 1bdb6ac.

[nlohmann]

84195da implements an erase functions for arrays:

void erase(const size_type pos)

This function removes the element at the given index pos. All following elements are moved forward. If pos is an invalid array index, std::out_of_range is thrown.

Compared to the initial example, I decided against passing a value to delete, because a value can occur multiple times and the result could be unexpected.

I hope this helps.

[drewpts]

@nlohmann my thanks!
I'll check it up by my side.

[mkwork]

Wow, thanks for so fast issue fix :)