Mercurial > minori
view dep/pugixml/docs/samples/traverse_predicate.cpp @ 187:9613d72b097e
*: multiple performance improvements
like marking `static const` when it makes sense...
date: change old stupid heap-based method to a structure which should
make copying the thing actually make a copy.
also many performance-based changes, like removing the std::tie
dependency and forward-declaring nlohmann json
*: replace every instance of QString::fromUtf8 to Strings::ToQString.
the main difference is that our function will always convert exactly
what is in the string, while some other times it would only convert
up to the nearest NUL byte
author | Paper <mrpapersonic@gmail.com> |
---|---|
date | Wed, 06 Dec 2023 13:43:54 -0500 |
parents | d10b6c6b432e |
children |
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#include "pugixml.hpp" #include <string.h> #include <iostream> // tag::decl[] bool small_timeout(pugi::xml_node node) { return node.attribute("Timeout").as_int() < 20; } struct allow_remote_predicate { bool operator()(pugi::xml_attribute attr) const { return strcmp(attr.name(), "AllowRemote") == 0; } bool operator()(pugi::xml_node node) const { return node.attribute("AllowRemote").as_bool(); } }; // end::decl[] int main() { pugi::xml_document doc; if (!doc.load_file("xgconsole.xml")) return -1; pugi::xml_node tools = doc.child("Profile").child("Tools"); // tag::find[] // Find child via predicate (looks for direct children only) std::cout << tools.find_child(allow_remote_predicate()).attribute("Filename").value() << std::endl; // Find node via predicate (looks for all descendants in depth-first order) std::cout << doc.find_node(allow_remote_predicate()).attribute("Filename").value() << std::endl; // Find attribute via predicate std::cout << tools.last_child().find_attribute(allow_remote_predicate()).value() << std::endl; // We can use simple functions instead of function objects std::cout << tools.find_child(small_timeout).attribute("Filename").value() << std::endl; // end::find[] } // vim:et