[perl5.git] / ext / B / t / f_map

#!perl
# examples shamelessly snatched from perldoc -f map

# translates a list of numbers to the corresponding characters.
@chars = map(chr, @nums);

%hash = map { getkey($_) => $_ } @array;

{
    %hash = ();
    foreach $_ (@array) {
	$hash{getkey($_)} = $_;
    }
}

#%hash = map {  "\L$_", 1  } @array;  # perl guesses EXPR.  wrong
%hash = map { +"\L$_", 1  } @array;  # perl guesses BLOCK. right

%hash = map { ("\L$_", 1) } @array;  # this also works

%hash = map {  lc($_), 1  } @array;  # as does this.

%hash = map +( lc($_), 1 ), @array;  # this is EXPR and works!

%hash = map  ( lc($_), 1 ), @array;  # evaluates to (1, @array)

@hashes = map +{ lc($_), 1 }, @array # EXPR, so needs , at end
Commit	Line	Data
cc02ea56 JC	1	#!perl
	2	# examples shamelessly snatched from perldoc -f map
	3
	4	# translates a list of numbers to the corresponding characters.
	5	@chars = map(chr, @nums);
	6
	7	%hash = map { getkey($_) => $_ } @array;
	8
	9	{
	10	%hash = ();
	11	foreach $_ (@array) {
	12	$hash{getkey($_)} = $_;
	13	}
	14	}
	15
	16	#%hash = map { "\L$_", 1 } @array; # perl guesses EXPR. wrong
	17	%hash = map { +"\L$_", 1 } @array; # perl guesses BLOCK. right
	18
	19	%hash = map { ("\L$_", 1) } @array; # this also works
	20
	21	%hash = map { lc($_), 1 } @array; # as does this.
	22
	23	%hash = map +( lc($_), 1 ), @array; # this is EXPR and works!
	24
	25	%hash = map ( lc($_), 1 ), @array; # evaluates to (1, @array)
	26
	27	@hashes = map +{ lc($_), 1 }, @array # EXPR, so needs , at end
	28
	29