Try this: let b = if a == True then &quot;+&quot; else &quot;-&quot; in ...<br><br><div class="gmail_quote">On Thu, Jun 25, 2009 at 4:12 PM, Bernhard Lehnert <span dir="ltr">&lt;<a href="mailto:b.lehnert@gmx.de">b.lehnert@gmx.de</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi,<br>
<br>
I&#39;m sorry because I am absolutely sure, this is bloody obvious to the<br>
knowing. Being a total beginner I&#39;m stuck. In the main = do part I<br>
wrote:<br>
<br>
1:     if a == True then putStrLn &quot;Yes!&quot; else putStrLn &quot;No.&quot;<br>
2:     if a == True then let b = &quot;+&quot; else let b = &quot;-&quot;<br>
<br>
Line #1 works perfectly well.<br>
Read line #2 as pseudocode and you&#39;ll see what I want to do. Read it in<br>
ghci and it produces<br>
     &quot;  parse error on input `=&#39;    &quot;<br>
<br>
I tried &#39;case of&#39; but it doesn&#39;t work either.<br>
<br>
What am I doing wrong?<br>
Thank you for any help,<br>
<br>
Bernhard<br>
<br>
<br>
<br>
<br>
<br>
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</blockquote></div><br>