From: Matthew Kerwin <matthew@...>
Date: 2013-03-12T17:34:43+09:00
Subject: Re: Confusion with empty block printing

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Note that one of my points was that the following are the same:

    print {}

    print do
    end

See also:

    5.times { }

    5.times do
    end

But this is different:

    print nil, {}

Also, ruby method calls have optional parentheses:

    3.inspect
    3.inspect()

    foo
    foo()

    print 'x'
    print( 'x' )

The interpreter always reads curlies {} as a block unless it makes no sense
to do so. Parens and commas make it clear it's a variable (and thus a Hash).

Sent from my phone, so excuse the typos.

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<p>Note that one of my points was that the following are the same:</p>
<p>=A0=A0=A0 print {}<br>
=A0=A0=A0 <br>
=A0=A0=A0 print do<br>
=A0=A0=A0 end</p>
<p>See also:</p>
<p>=A0=A0=A0 5.times { }<br>
=A0=A0=A0 <br>
=A0=A0=A0 5.times do<br>
=A0=A0=A0 end</p>
<p>But this is different:</p>
<p>=A0=A0=A0 print nil, {}</p>
<p>Also, ruby method calls have optional parentheses:</p>
<p>=A0=A0=A0 3.inspect<br>
=A0=A0=A0 3.inspect()</p>
<p>=A0=A0=A0 foo<br>
=A0=A0=A0 foo()</p>
<p>=A0=A0=A0 print &#39;x&#39;<br>
=A0=A0=A0 print( &#39;x&#39; )</p>
<p>The interpreter always reads curlies {} as a block unless it makes no se=
nse to do so. Parens and commas make it clear it&#39;s a variable (and thus=
 a Hash).</p>
<p>Sent from my phone, so excuse the typos.</p>

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