# Void value expression for 'retry'

**URL:** <https://www.ruby-forum.com/t/void-value-expression-for-retry/116057>\
**Category:** Ruby\
**Created:** [October 1, 2007, 11:40pm UTC](https://www.ruby-forum.com/t/void-value-expression-for-retry/116057 "2007-10-01T23:40:20Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Mohammad\_K](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/8e8cbc/32.png) [@Mohammad\_K](https://www.ruby-forum.com/u/Mohammad_K)\
**Post date:** [October 1, 2007, 11:40pm UTC](https://www.ruby-forum.com/t/void-value-expression-for-retry/116057/1 "2007-10-01T23:40:20Z")

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following code returns,  
retry.rb:13: void value expression

What is wrong with this code?

#!/usr/bin/env ruby

retry\_count = 0  
retry\_max = 4

begin  
sleep 30

rescue Interrupt  
if ( retry\_count \< retry\_max)  
retry\_count++  
retry  
end  
rescue  
raise  
end

Thanks,  
Mohammad

---

<div class="post-metadata">

**Author:** ![Mohammad\_K](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/8e8cbc/32.png) [@Mohammad\_K](https://www.ruby-forum.com/u/Mohammad_K)\
**Post date:** [October 1, 2007, 11:49pm UTC](https://www.ruby-forum.com/t/void-value-expression-for-retry/116057/2 "2007-10-01T23:49:07Z")

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On 10/1/07, Mohammad K. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> retry\_max = 4
> 
> begin  
> sleep 30
> 
> rescue Interrupt  
> if ( retry\_count \< retry\_max)  
> retry\_count++

retry\_count++ is not valid ruby code. so that could be causing some  
problems.

```
            retry

```

---

<div class="post-metadata">

**Author:** ![Mohammad\_K](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/8e8cbc/32.png) [@Mohammad\_K](https://www.ruby-forum.com/u/Mohammad_K)\
**Post date:** [October 1, 2007, 11:52pm UTC](https://www.ruby-forum.com/t/void-value-expression-for-retry/116057/3 "2007-10-01T23:52:02Z")

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Mohammad K. wrote:

> end
> 
> Thanks,  
> Mohammad

Ruby doesn’t have the post-increment (++) operator. Use retry\_count += 1  
instead.