Description Sample Code mutable reference &mut varible_name reference &varible_name Rust中会对变量增加一个所有权的概念，即，变量被声明时，所分配的内存（包括栈（stack）上分配和堆（heap）上分配的变量）归当前变量所有。一旦变量超出其作用域后便会将分配的内存释放掉。 12

HashMapstd::collections::hash_map::Entry访问HashMap的元素，提供有or_default方法来获取没有存在的key，并对其设置默认值。也可以使用or_insert对没有存在的key进行值的设置 123456789use std::collections::HashMap;let mut map: HashMap<&str, u32>

String charsString as_bytes()

HeadingUse -/=we can use -/= tag to specify a heading. - represents the two level heading and = represents the one level heading. There are only two levels heading with this way. 12345heading1 with `-

DescriptionThere is a room with n bulbs labeled from 1 to n that all are turned on initially, and four buttons on the wall. Each of the four buttons has a different functionality where: Button 1: Fli

VecVec is a contiguous growable array type. 1234pub struct Vec<T, A = Global>where A: Allocator, { ... } ExamplesWe can declare a mutable/immutable Vec by Vec::new() 12let mut

DescriptionYou are given a sorted array consisting of only integers where every element appears exactly twice, except for one element which appears exactly once. Return the single element that appea

Redis中的布隆过滤器（BloomFilter）Redis官方在4.0版本中提供了插件功能，此时可以将rebloom作为插件加载到Redis Server中，给Redis提供布隆去重功能。 123docker pull redislab/rebloomdocker run -p 6739:6739 redislab/rebloomredis-cli 1234567891011121314# 插