diff options
Diffstat (limited to 'meap/meap-code/ch1/ch1-word-counts.rs')
-rwxr-xr-x | meap/meap-code/ch1/ch1-word-counts.rs | 16 |
1 files changed, 16 insertions, 0 deletions
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);
+}
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