Hao, Benjamin Tan Wei <br/><br/>
Mastering Ruby closures :  a guide to blocks, procs, and lambdas  / 
Benjamin Tan Wei Hao 
 - North Carolina :  the pragmatic bookshelf ,  2017 
 - xiii,75 p.;  24 cm. 
<br/><br/><label>ISBN: </label>9781680502619 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ruby (Computer program language).
<br/><br/><label>LC Class. No.: </label>QA76.64  / .H33     2017