Brazell

as subject states.. version more efficient , why? std::vector a; .. a.clear(); or std::vector a; .. if(!a.empty()) a.clear(); an empty vector valid vector. operation a.clear(); is valid on empty vector. test emptiness before clear unnecessary , time consuming, first 1 more efficient.

i need remove twitter profile links twitter widget iframe on primary school website (some of parents swear lot! head doesn't want kids click on link on school website limited vocabulary!) here's code - works in ff not chrome or ie! <script type="text/javascript"> jquery("iframe").load(function() { jquery("iframe#twitter-widget-0").contents().find("a.profile").each(function(index) { jquery(this).removeattr('href'); }); }); </script> how can make work cross browser, bearing in mind twitter widget sent twitter iframe loads late!

i trying open raw socket deal udp traffic. need promiscuous. have looked @ lots of resources totally confused. here code: char interface_name[12]; strcpy(interface_name, "eth1"); sd = socket(af_inet, sock_raw, ipproto_udp); if ( sd == -1 ) { perror("error in opening socket."); return; } if ( setsockopt(sd, sol_socket, so_bindtodevice, interface_name, strlen(interface_name)) == -1 ) { perror("error in binding sd."); return; } int 1 = 1; if ( setsockopt (sd, ipproto_ip, ip_hdrincl, &one, sizeof(one)) < 0) { perror("error in setting hdrincl."); return; } struct ifreq ifr; memset(&ifr, 0, sizeof(ifr)); strcpy(ifr.ifr_name, interface_name); if (ioctl(sd, siocgifindex, &ifr) < 0) { perror("ioctl(siocgifindex) failed"); return; } int interface_index = ifr.ifr_ifindex; ifr.ifr_flags |= iff_promisc; if( ioctl(sd, siocsifflags, &ifr) != 0 ) { perror("ioctl iff_promisc failed....

i dont know php forgive ignorance. trying have parameter value entered in joomla admin area append string bootstrap container class change page fixed fluid layout. i retrieving value this... $contype = $this->params->get('contype',''); and setting follows... class="container<?php echo "$contype"; ?> however, worried (knowing little php) if security problem since value set $contype - problem? if so, work instead...? $contype = (int) $this->params->get('contype','0'); if($contype == "1") { $contype = "-fluid"; } else { $contype = ' '; } and echo again. necessary? there better way? yes, work , secure. if $contype can parameter, important escape against xss using htmlentities(): echo htmlentities($contype) the way did better, although costs more effort. ;-) just remember use htmlentities in future if need escaping of many parameters , not 1 small customization....

i want read data combobox. know how in mysql , looks this: private sub cmbdescrip_selectedindexchanged(byval sender system.object, byval e system.eventargs) handles cmbdescrip.selectedindexchanged dim getcategorydesc mysqlcommand = new mysqlcommand("select * category catdesc=@field2;", connection) dim reader1 mysqldatareader if connection.state = connectionstate.closed connection.open() end if try getcategorydesc .parameters.addwithvalue("@field2", cmbdescrip.text) end reader1 = getcategorydesc.executereader() while (reader1.read()) txtcatno.text = (reader1("catno")) end while getcategorydesc.dispose() reader1.close() catch ex exception end try end sub and yes code works i'm working sql server 2012, database i'm not familiar with. problem sql server not seem read "@field2". in mysql , that's problem right ...

i have piwik running on 1 server, server a. websites run on different server, server b. don't want users know server a's address (including cookies set), want statistics. presume have redirect requests piwik.php server b server don't know how. ## piwik proxy hide url script allows track statistics using piwik, without revealing piwik server url. useful users track multiple websites on same piwik server, don't want show piwik server url in source code of tracked websites. located in /path/to/piwik/misc/proxy-hide-piwik-url/ folder. should looking for.

i have table number of rows follows: +---------------------+------+ | utc | temp | +---------------------+------+ | 2011-01-30 00:00:14 | -3 | | 2011-01-30 00:40:06 | -4 | | 2011-01-30 01:00:15 | -4 | | 2011-01-30 01:20:14 | -4 | | 2011-01-30 02:00:12 | -4 | | 2011-01-30 02:20:18 | -4 | | 2011-01-30 03:00:16 | -4 | | ... | ... | utc of type datetime , , temp of type int . for each day, find temp value closest day's noon hour. possibly resulting in table looks this: +---------------------+------+ | utc | temp | +---------------------+------+ | 2011-01-30 12:01:14 | -3 | | 2011-01-31 11:58:36 | -4 | | 2011-02-01 12:00:15 | -5 | | 2011-02-02 12:03:49 | -7 | | 2011-02-03 02:00:12 | -8 | | ... | ... | finding single day easy enough: select utc, temp table date(utc)='2011-01-30' order abs(timestampdiff(second,utc,date_add(date(utc),interval 12 hour))) limit 1; but someho...