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// Licensed to the Apache Software Foundation (ASF) under one // or more contributor license agreements. See the NOTICE file // distributed with this work for additional information // regarding copyright ownership. The ASF licenses this file // to you under the Apache License, Version 2.0 (the // "License"); you may not use this file except in compliance // with the License. You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, // software distributed under the License is distributed on an // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY // KIND, either express or implied. See the License for the // specific language governing permissions and limitations // under the License. /// Converts numeric type to a `String` pub fn lexical_to_string<N: lexical_core::ToLexical>(n: N) -> String { let mut buf = Vec::<u8>::with_capacity(N::FORMATTED_SIZE_DECIMAL); unsafe { // JUSTIFICATION // Benefit // Allows using the faster serializer lexical core and convert to string // Soundness // Length of buf is set as written length afterwards. lexical_core // creates a valid string, so doesn't need to be checked. let slice = std::slice::from_raw_parts_mut(buf.as_mut_ptr(), buf.capacity()); let len = lexical_core::write(n, slice).len(); buf.set_len(len); String::from_utf8_unchecked(buf) } }