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Date: Wed, 27 May 2015 12:00:59 -0400
From: Steve Amerige <Steve.Amerige@sas.com>
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To: "users@groovy.incubator.apache.org" <users@groovy.incubator.apache.org>
Subject: Changing the default to TypeChecked
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Hi all,

Jochen showed us how to default to CompileStatic 
<http://groovy.329449.n5.nabble.com/Changing-the-default-to-CompileStatic-tp5723113p5723114.html> 
in a post a few months ago.  A question was raised about about changing 
the default to TypeChecked for the case where a user doesn't want 
CompileStatic as a default, but does want TypeChecked as a default.  
Would it be the same solution as above? That is:

*config.groovy*

    withConfig(configuration) {
         ast(groovy.transform.TypeChecked)
    }

and then do: groovyc -configscriptsrc/conf/config.groovy 
src/main/groovy/MyClass.groovy

Also, if one were to specify:

*config.groovy*

    withConfig(configuration) {
         ast(groovy.transform.CompileStatic)
    }

would that also mean that TypeChecked is enabled by default?  How is it 
disabled for a given class or method?  Or, would one need to do the 
following?

*config.groovy*

    withConfig(configuration) {
         ast(groovy.transform.CompileStatic)
         ast(groovy.transform.TypeChecked)
    }

In summary, I'm asking:

 1. Is adding ast(groovy.transform.TypeChecked) in the config file how
    to turn on TypeChecked by default?
 2. What is the idiom to disable TypeChecked for a given class or method?
 3. Does CompileStatic imply TypeChecked (so that if CompileStatic is
    specified, it is not necessary to specify TypeChecked in a config file)?

Thanks,
Steve Amerige
Principal Software Developer, Fraud and Compliance Solutions Development
SAS Institute, 100 SAS Campus Dr, Room U3050, Cary, NC 27513-8617


P.S.  By the way, having the ability to set the default for strong type 
checking and static compilation while at the same time allowing for 
specific exceptions (via @CompileDynamic, for example) has been very 
useful in reducing push-back regarding Groovy adoption. Similarly, 
disallowing @Grab 
<http://groovy.329449.n5.nabble.com/Disabling-Grape-tp5720694p5721122.html> 
as Cédric suggests is also part of helps enterprises embrace Groovy. I 
encourage people to promote this and other similar features when 
encountering resistance!  I think there should be an entire section in 
the documentation that focuses on issues like these that are of interest 
to large enterprises.

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<html>
  <head>

    <meta http-equiv="content-type" content="text/html; charset=utf-8">
  </head>
  <body bgcolor="#FFFFFF" text="#000000">
    Hi all,<br>
    <br>
    Jochen showed us how to <a
href="http://groovy.329449.n5.nabble.com/Changing-the-default-to-CompileStatic-tp5723113p5723114.html">default
      to CompileStatic</a> in a post a few months ago.  A question was
    raised about about changing the default to TypeChecked for the case
    where a user doesn't want CompileStatic as a default, but does want
    TypeChecked as a default.  Would it be the same solution as above? 
    That is:<br>
    <br>
    <b>config.groovy</b><br>
    <blockquote><tt>withConfig(configuration) {</tt><tt><br>
      </tt><tt>    ast(groovy.transform.TypeChecked)</tt><tt><br>
      </tt><tt>}</tt><tt><br>
      </tt></blockquote>
    and then do:  <font color="#3333ff"><tt>groovyc -configscript</tt><tt>
        src/conf/config.groovy src/main/groovy/MyClass.groovy</tt></font><br>
    <br>
    Also, if one were to specify:<br>
    <br>
    <b>config.groovy</b><br>
    <blockquote><tt>withConfig(configuration) {</tt><tt><br>
      </tt><tt>
            ast(groovy.transform.CompileStatic)</tt><tt><br>
      </tt><tt>
        }</tt><tt><br>
      </tt></blockquote>
    would that also mean that TypeChecked is enabled by default?  How is
    it disabled for a given class or method?  Or, would one need to do
    the following?<br>
    <br>
    <b>config.groovy</b><br>
    <blockquote><tt>withConfig(configuration) {</tt><tt><br>
      </tt><tt>
            ast(groovy.transform.CompileStatic)</tt><br>
      <tt>    ast(groovy.transform.TypeChecked)</tt><tt><br>
      </tt><tt>
        }</tt><tt><br>
      </tt></blockquote>
    In summary, I'm asking:<br>
    <ol>
      <li>Is adding <tt><font color="#3333ff">ast(groovy.transform.TypeChecked)</font>
        </tt>in the config file how to turn on TypeChecked by default?</li>
      <li>What is the idiom to disable TypeChecked for a given class or
        method?</li>
      <li>Does CompileStatic imply TypeChecked (so that if CompileStatic
        is specified, it is not necessary to specify TypeChecked in a
        config file)?<br>
      </li>
    </ol>
    Thanks,<br>
    Steve Amerige<br>
    <small> Principal Software Developer, Fraud and Compliance Solutions
      Development<br>
      SAS Institute, 100 SAS Campus Dr, Room U3050, Cary, NC 27513-8617
    </small>
    <br>
    <br>
    <img alt="" src="cid:part2.00010105.00080307@sas.com" height="43"
      width="181"><br>
    <br>
    P.S.  By the way, having the ability to set the default for strong
    type checking and static compilation while at the same time allowing
    for specific exceptions (via @CompileDynamic, for example) has been
    very useful in reducing push-back regarding Groovy adoption. 
    Similarly, <a
href="http://groovy.329449.n5.nabble.com/Disabling-Grape-tp5720694p5721122.html">disallowing
      @Grab</a> as Cédric suggests is also part of helps enterprises
    embrace Groovy. I encourage people to promote this and other similar
    features when encountering resistance!  I think there should be an
    entire section in the documentation that focuses on issues like
    these that are of interest to large enterprises.<br>
  </body>
</html>

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