Re: Print every past three months from current month

Why not take a slice instead of using splice.

my @a = qw( a b c d e f g );
sub f {
    my $i = shift;  
    print join(',',  @a[$i-2, $i-1, $i]), "\n";
}

f(0);
f(1);
f(2);
f(6);
[download]

outputs

f,g,a
g,a,b
a,b,c
e,f,g
[download]

Comment on Re: Print every past three months from current month Select or Download Code

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Re^2: Print every past three months from current month by Anonymous Monk on Apr 01, 2014 at 13:00 UTC
Hi, think if it was months, the count has to go backwards, and I can't get it to do it: `my @months = qw( January February March April May June July October No +vember December ); # passing 4 for April, I should get "February March April", instead I +get: "March April May". f(4); sub f { my $i = shift; print join(',', @months[$i-2, $i-1, $i]), "\n"; }` [download] Thanks!	[reply] [d/l]
Re^3: Print every past three months from current month by wazat (Monk) on Apr 01, 2014 at 16:11 UTC
Remember that perl array indices start at zero. April would have index 3, not 4. Also you are missing August and September. `my @months = qw( January February March April May June July August Sep +tember October November December ); f(3); # Apr f(0); # Jan f(11); # Dec sub f { my $i = shift; print join(',', @months[$i-2, $i-1, $i]), "\n"; }` [download] Output `February,March,April November,December,January October,November,December` [download]	[reply] [d/l] [select]
Re^3: Print every past three months from current month by AnomalousMonk (Archbishop) on Apr 01, 2014 at 18:48 UTC
c:\@Work\Perl\monks>perl -wMstrict -le "my %months_name = qw( 1 January 2 February 3 March 4 April 5 May 6 June 7 July 8 August 9 September 10 October 11 November 12 December ); ;; my @months = map $months_name{$_}, sort { $a <=> $b } keys %months_na +me; ;; for my $n (1 .. 12) { my @prev_3 = map $n-1+$_, -3 .. -1; @prev_3 = @months[ @prev_3 ]; print qq{(@prev_3) before $months_name{$n} (month $n)}; } " (October November December) before January (month 1) (November December January) before February (month 2) (December January February) before March (month 3) (January February March) before April (month 4) (February March April) before May (month 5) (March April May) before June (month 6) (April May June) before July (month 7) (May June July) before August (month 8) (June July August) before September (month 9) (July August September) before October (month 10) (August September October) before November (month 11) (September October November) before December (month 12) [download]	[reply] [d/l]