c++ - How to iterate a boost property tree? - Stack Overflow An addition to the answer How to iterate a boost property tree?: In the C++11 style range based for for (auto node : tree), each node is a std::pair<key_type, property_tree> Whereas in the manually written iteration Your_tree_type::const_iterator end = tree end(); for (your_tree_type::const_iterator it = tree begin(); it != end; ++it)
c++ - Boost PropertyTree: check if child exists - Stack Overflow While these solutions might appear to avoid iterating over the tree, just keep in mind that under the covers they are still doing exactly that, so you are making your algorithm potentially n^2 if you are concerned about performance and have memory to spare, you could use a map container for quick lookups
c++ - Boost 1. 46. 1, Property Tree: How to iterate through ptree . . . The property tree iterators point to pairs of the form (key, tree) of type ptree::value_type The standard loop for iterating through the children of the node at path therefore looks like: BOOST_FOREACH(const ptree::value_type v, pt get_child(path)) { v first is the name of the child
c++ - Reading JSON with Boost property_tree - Stack Overflow I've also added code to print the whole tree recursively so you can see how the JSON gets translated to the ptree Arrays elements are stored as key value pairs where the key is an empty string Share
How to iterate over XML structure in boost::property_tree Which is being read into a boost::property_tree, There are 1 Many <SomeElement>s, and then at an arbitrary depth within that element there could be 1 Many <ElementIWant>s Is there a way to iterate over the <ElementIWant> directly (in a single loop) in the order that they appear in the doc? I have looked at equal_range
c++ - boost propertytree - Stack Overflow ) that property tree is not ordered by key "It is very important to remember that the property sequence is not ordered by the key It preserves the order of insertion " In that case I cannot imagine that elements inside the range will all have the requested key –
Writing and Reading boost Property Tree From To File? I want to write a boost::property_tree::ptree binary to a file, and read it out again into a ptree Since i´m not very comfort with the ptree and binary writing reading them I thought you guys can lead me into the right direction
Creating JSON arrays in Boost using Property Trees I'm trying to create a JSON array using boost property trees The documentation says: "JSON arrays are mapped to nodes Each element is a child node with an empty name " So I'd like to create a property tree with empty names, then call write_json( ) to get the array out However, the documentation doesn't tell me how to create unnamed child