those are not at all equivalent! 
  DB<1> x %hash = map { split( /X/, $_ ) } ( "fooXbar","bishXbash");
0  'foo'
1  'bar'
2  'bish'
3  'bash'
  DB<2> x %hash = split /X/, ("fooXbar","bishXbash");
0  'bish'
1  'bash'

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In reply to Re^3: Assign (key, value) to a hash w/o clobbering hash by mreece
in thread Assign (key, value) to a hash w/o clobbering hash by Melly

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