Gossamer Forum: General: Perl Programming: grep and $

can you please explain what the line:
if (grep {$_ eq $name} @players) {
in the code below does? what is $_ in this context? thanks!

Code:
my (@players,$pEmail,@sent_to,$user_sent,$name,@signed_up,@not_signed_up);
# my ($to,$reply_to,$returnpath,$cc,$bcc,$found,$subscriber); 
my ($found,$subscriber); 
 $reply_to = $in{'email'};
 $returnpath = $admin_email;
 
 @players = split (/\|/, $rec{'Players'});
 
 my (%sav) = %in;
 &switch_to_members;
 undef %in;
 $in{'Member'} = 'Yes';
 $in{'sb1'} = '1';
 my ($status2, @hits2) = &query2("view"); 
 %in = %sav;
 if($status2 eq 'ok') {
 my ($numhits2) = ($#hits2+1) / ($#db2_cols+1);
 for (0 .. $numhits2 - 1) {
 $email_msg = $orig_msg; # 05/10/2022
 $email_msg .= $rec{'DayOfWeek'} . " " . $date . "~"; # 06/30/2022
 $email_msg .= $rec{'Title'} . "~~";
 $found = 0; # 06/03/2022
 $subscriber = ''; # 07/22/2022
 %rec2 = &array_to_hash2($_, @hits2);
 if (($rec2{'Email'} ne $default_email) && ($rec2{'Email'} =~ /.+\@.+\..+/)) { # valid email 
 $name = $rec2{'Userid'};
 $to = $rec2{'Email'};
 if ($rec2{'Subscriptions'} =~ /EventNotifications/) { # 07/22/2022
 $subscriber = 'Subscriber';
 }
 if (grep {$_ eq $name} @players)  {
 $found = 1;
 $subject =  "Signup Confirmation Notice";
 $email_msg .= qq|~You are signed up to play $rec{'DayOfWeek'} $date. ~~ 
 Online signups are now closed. Please call the pro shop if you need to cancel.|;
 $email_msg .= '~~' . $players; # 06/02/2022
 #push (@signed_up,$to); # collect the email addresses
 push (@signed_up,$rec2{'Userid'} . " " . $rec2{'Firstname'} . " "  . $rec2{'Lastname'}  . " "  . $to  . " " . $subscriber );
 }
 else {
 $subject =  "Online Signups Closed";
 $email_msg .= qq|~You are NOT signed up to play $rec{'DayOfWeek'} $date. ~ 
 Online signups are now closed. Please call the pro shop to sign up.|;
 #push (@not_signed_up,$to); # collect the email addresses
 push (@not_signed_up,$rec2{'Userid'} . " " . $rec2{'Firstname'} . " "  . $rec2{'Lastname'}  . " "  . $to  . " " . $subscriber);
 }

Subject	Author	Views	Date
grep and $_ question	delicia	3618	Aug 10, 2022, 4:42 PM

Re: [delicia] grep and $_ question	Andy	3556	Aug 11, 2022, 11:49 PM

Re: [Andy] grep and $_ question	delicia	3553	Aug 12, 2022, 6:51 AM

Re: [delicia] grep and $_ question	Andy	3547	Aug 12, 2022, 6:57 AM

Re: [Andy] grep and $_ question	delicia	3543	Aug 12, 2022, 9:42 AM

Re: [delicia] grep and $_ question	Andy	3498	Aug 14, 2022, 11:09 PM

grep and $_ question