insert() [3/6]

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 = std::int64_t, class NumberUnsignedType = std::uint64_t, class NumberFloatType = double, template< typename U > class AllocatorType = std::allocator, template< typename T, typename SFINAE=void > class JSONSerializer = adl_serializer, class BinaryType = std::vector<std::uint8_t>>

iterator nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer, BinaryType >::insert ( const_iterator  pos, const basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer, BinaryType > &  val  )

inline

inserts element

Inserts element val before iterator pos.

Parameters

[in]	pos	iterator before which the content will be inserted; may be the end() iterator
[in]	val	element to insert

Returns

iterator pointing to the inserted val.

Exceptions

type_error.309	if called on JSON values other than arrays; example: "cannot use insert() with string"
invalid_iterator.202	if pos is not an iterator of *this; example: "iterator does not fit current value"

@complexity Constant plus linear in the distance between pos and end of the container.

@liveexample{The example shows how insert() is used.,insert}

Since

version 1.0.0

Definition at line 23458 of file json.hpp.

    {
        // insert only works for arrays
        if (JSON_HEDLEY_LIKELY(is_array()))
        {
            // check if iterator pos fits to this JSON value
            if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
            {
                JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value", *this));
            }
 
            // insert to array and return iterator
            return insert_iterator(pos, val);
        }
 
        JSON_THROW(type_error::create(309, "cannot use insert() with " + std::string(type_name()), *this));
    }