From 7e8ee5ed9cad6484e9f13f81731b102ced58402e Mon Sep 17 00:00:00 2001 From: Adam Carpenter Date: Tue, 9 Jul 2019 15:14:04 -0400 Subject: Init. --- meap/meap-code/ch1/ch1-word-counts.rs | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100755 meap/meap-code/ch1/ch1-word-counts.rs (limited to 'meap/meap-code/ch1/ch1-word-counts.rs') diff --git a/meap/meap-code/ch1/ch1-word-counts.rs b/meap/meap-code/ch1/ch1-word-counts.rs new file mode 100755 index 0000000..fc5c8ea --- /dev/null +++ b/meap/meap-code/ch1/ch1-word-counts.rs @@ -0,0 +1,16 @@ +use std::collections::HashMap; + +fn main() { + let text = "once upon a time ..."; + let mut word_counts = HashMap::new(); + + let pairs = text.split(" ") + .map(|x| { (x, 1) }); + + for (word, count) in pairs { + let tmp = word_counts.entry(word) + .or_insert(0); + *tmp += count; + } + println!("{:?}", word_counts); +} -- cgit v1.2.3