add elapsed time for Crystal

Author: hipertracker

words_extractor_cr/README.md

@@ -8,8 +8,15 @@ TODO: Write installation instructions here
 
 ## Usage
 
-TODO: Write usage instructions here
-
+Build an optimized code with MT support
+```
+crystal build --release -Dpreview_mt src/fast_words_cr.cr -o main
+```
+
+Run on 8 CPU cores:
+```
+CRYSTAL_WORKES=8 ./main
+```
 ## Development
 
 TODO: Write development instructions here

words_extractor_cr/src/fast_words_cr.cr

@@ -4,7 +4,7 @@ require "yaml"
 # TODO: Write documentation for `FastWordsCr`
 
 module FastWordsCr
-  VERSION = "0.1.0"
+  VERSION = "0.2.0"
   CHARSET = "aąbcćdeęfghijklłmnńoópqrsśtuvwxyzźż"
 
   def self.main(outpath = "words")
@@ -69,4 +69,7 @@ module FastWordsCr
   end
 end
 
-FastWordsCr.main
+elapsed_time = Time.measure do
+  FastWordsCr.main
+end
+puts elapsed_time