scalar(@array) Returns the number of elements in @array $#array The index of the last element in @array grep(/pattern/, @array) Returns a list of the items in @array that matched /pattern/ join(expr, @array) Joins @array into a single string separated by expr push(@array, $var) ...
print "@array"; #打印一个字符串(包含一个内插的数组) 第一个语句打印出所有的元素,一个接着一个,其中没有空格。第二个打印出一个元素,它为@array 的所有元素,其被存在一个字符串中。也就是说,打印出@array 的所有元素,并由空格分开。如果@array 包含 qw /fred barney betty /,则第一个例子输出为:f...
print "whoismissingitem.\n"; } } } my @skipper = qw(blue_shirt hat jacket preserver sunscreen); my @professor = qw(sunscreen water_bottle slide_rule batteries radio); check_required_items('skipper', @skipper); check_required_items('professor', @professor); ▶︎allrunning… 上述示例...
表示,总的参数个数用变量items保存: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 bool_t rpcb_gettime(timep, ...) time_t timep = NO_INIT PREINIT: char *host = "localhost"; STRLEN n_a; CODE: if( items > 1 ) host = (char *)SvPV(ST(1), n_a); RETVAL = rpcb_gettime...
sub prueba{ my (@array1, @array2)=@_; if (scalar(@array1)<scalar(@array2)) { print @array1,"\n"; } elsif (scalar(@array1)>scalar(@array2)){ print @array2,"\n"; } }; my @primero=(1,5,9); my @segundo=(1,7,8,9,6,5,6,9); prueba(\@primero,\@segundo); 发布...
print“@any_array\n”; 1. #可能得到如下的结果:betty bye(换行),wilma 1.72e+30 foo 35 2.5 hello bar 12.4 使用如下的语法在hash 之间拷贝: %new_hash=%old_hash; 1. 这段代码告诉Perl 将%old_hash 展开成key/value 的列表,再将其赋给%new_hash,其将key/value 对一个一个加入的。hash 转变成...
'Bottom 5 Items' #后5个 'Top 25 %' #前25% 'Bottom 50 %' #后50% 'x =~ b*' # 以b开头 'x !~ b*' # 不以b开头 'x =~ *b' # 以b结尾 'x !~ *b' # 不以b结尾 'x =~ *b*' # 包含b 'x !~ *b*' # 不包含b ...
For example, looping through a list of items in Perl could be written in any of the following ways: Perl (Option 1) my @list = (1, 2, 3, 4, 5); foreachmy $item (@list) { print $item; } Perl (Option 2) my @list = (1, 2, 3, 4, 5); formy $index (0 .. $#lis...
1.print输出 二者通用格式:print(“字符串”); Perl: print(“字符串1”."字符串2".$bianliang(任何变量都可以)."\n"); #无自带换行符 Python: print(“字符串1”+“字符串2”+字符变量1+str(非字符变量2)); #a="map" 字符变量 a=1非字符变量 #自带换行符 ...
"; while (<STDIN>) { print; print OUT; } close OUT; Applying %s to %s will act on scalar(%s) (W misc) The pattern match ("//"), substitution ("s///"), and transliteration ("tr///") operators work on scalar values. If you apply one of them to an array or a hash, it ...