allocator_type array array_t at at at at back back basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json basic_json begin begin boolean_t cbegin cend clear const_pointer const_reference const_reverse_iterator count crbegin crend difference_type dump empty end end erase erase erase erase find find front front get get get get_allocator get_ptr get_ptr get_ref get_ref insert insert insert insert insert is_array is_boolean is_discarded is_null is_number is_number_float is_number_integer is_number_unsigned is_object is_primitive is_string is_structured iterator_wrapper iterator_wrapper max_size number_float_t number_integer_t number_unsigned_t object object_t operator value_t operator ValueType operator!= operator!= operator!= operator+= operator+= operator+= operator< operator< operator<< operator<< operator<= operator= operator== operator== operator== operator> operator>= operator>> operator>> operator[] operator[] operator[] operator[] operator[] operator[] operator[] operator[] parse parse parse parse_event_t parser_callback_t pointer push_back push_back push_back rbegin rbegin reference rend rend reverse_iterator size size_type string_t swap swap swap swap type value value value_t value_type ~basic_json

template<template< typename U, typename V, typename...Args > class ObjectType = std::map, template< typename U, typename...Args > class ArrayType = std::vector, class StringType = std::string, class BooleanType = bool, class NumberIntegerType = int64_t, class NumberUnsignedType = uint64_t, class NumberFloatType = double, template< typename U > class AllocatorType = std::allocator> void nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType >::erase ( const size_type  idx ) inline Removes element from a JSON array at the index idx. Parameters [in] idx index of the element to remove Exceptions std::domain_error when called on a type other than JSON array; example: "cannot use erase() with null" std::out_of_range when idx >= size(); example: "index out of range" Complexity Linear in distance between idx and the end of the container. Example The example shows the effect of erase. #include <json.hpp> using json = nlohmann::json; int main() { // create a JSON array json j_array = {0, 1, 2, 3, 4, 5}; // call erase j_array.erase(2); // print values std::cout << j_array << '\n'; } Output (play with this example online): [0,1,3,4,5] The example code above can be translated with g++ -std=c++11 -Isrc doc/examples/erase__size_type.cpp -o erase__size_type See also erase(InteratorType) – removes the element at a given position erase(InteratorType, InteratorType) – removes the elements in the given range erase(const typename object_t::key_type&) – removes the element from an object at the given key Since version 1.0.0 Definition at line 3852 of file json.hpp.