有点变态的perl6语法？

miniqq

你需要多少时间习惯？


----------------------------------------------------------------------
    say [+] 1, 2, 3;    # 6
    say [+] ();         # 0
    say [~] <a b>;      # ab
    say [**] 2, 3, 4;   # 2417851639229258349412352

    [\+] 1, 2, 3, 4     # 1, 3, 6, 10
    [\**] 2, 3, 4       # 4, 81, 2417851639229258349412352

    if [<=] @list {
        say "ascending order";
    }


----------------------------------------------------------------------
    if    [==] @nums { say "all nums in @nums are the same" }
    elsif [<]  @nums { say "@nums is in strict ascending order" }
    elsif [<=] @nums { say "@nums is in ascending order"}

----------------------------------------------------------------------
    subset Squares of Int where { .sqrt.int**2 == $_ };

    multi sub square_root(Squares $x --> Int) {
        return $x.sqrt.int;
    }
    multi sub square_root(Num $x --> Num) {
        return $x.sqrt;
    }

----------------------------------------------------------------------
    my @integers = 0..*;
    for @integers -> $i {
        say $i;
        last if $i % 17 == 0;
    }

    my @even = map { 2 * $_ }, 0..*;
    my @stuff = gather {
        for 0 .. Inf {
            take 2 ** $_;
        }
    }

----------------------------------------------------------------------
    my $file = open '/etc/passwd', :r;
    for $file.lines -> $line {
        say $line;
    }

----------------------------------------------------------------------

af80

Perl6 has some new features, those are what it should have, since most of them have owned by other popular languages like Python/Ruby while not Perl5.
Personally I best wish Perl6 come soon. Everything has been getting improved like Perl, but won't us?

Orchid in Ubuntu

cobrawgl

多看几眼就习惯了，习惯了就会觉得好了

flw

比较直观，很好理解。

ttcn_cu

蛋疼
关键字越多，记忆难度越大，花在代码本省的书写上的时间就越多，花在逻辑分析上的时间越少

ttcn_cu

不仅需要一本from c to perl，更需要一本from perl5 to perl6

blackold

flw

原帖由 ttcn_cu 于 2009-12-22 20:46 发表
蛋疼
关键字越多，记忆难度越大，花在代码本省的书写上的时间就越多，花在逻辑分析上的时间越少

谬论

blackold

还是比较喜欢Perl的自然语言特性。

royalzhang

语法很好。但是短期内还进入不了生产环境。
估计5的语法会慢慢过渡到6的。