# Code Review: Blocks

**URL:** <https://www.ruby-forum.com/t/code-review-blocks/151200>\
**Category:** IronRuby\
**Created:** [October 18, 2008, 2:01am UTC](https://www.ruby-forum.com/t/code-review-blocks/151200 "2008-10-18T02:01:08Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![grujildo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/94ad74/32.png) [@grujildo](https://www.ruby-forum.com/u/grujildo)\
**Post date:** [October 18, 2008, 2:01am UTC](https://www.ruby-forum.com/t/code-review-blocks/151200/1 "2008-10-18T02:01:08Z")

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tfpt review “/shelveset:Blocks;REDMOND\tomat”

Ruby:  
Avoids creating lists of expressions and block expressions, optimizes  
block creation in AstFactory (which improves Rails startup time by about  
5s).

DLR:  
Optimizes interpretation of block expressions.

Tomas

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**Author:** ![grujildo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/94ad74/32.png) [@grujildo](https://www.ruby-forum.com/u/grujildo)\
**Post date:** [October 18, 2008, 5:47am UTC](https://www.ruby-forum.com/t/code-review-blocks/151200/2 "2008-10-18T05:47:28Z")

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Ruby changes look good.  
A few tab characters snuck into InterpretBlock in Interpreter.cs