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erics, January 1st, 2015 awk ‘{sum+=$1}END{print sum}’ inputFile
Categories: How-To's, Technology Add, AWK, bash, Command line, howto, Math, Shell, Sum, tips
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erics, October 3rd, 2012 |
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var sum = 0; // loop through each field jQuery(".sum").each(function() { //add only if the value is number if( ! isNaN(this.value) && this.value.length != 0 ) { sum += parseFloat(this.value); } }); //.toFixed() rounds the sum to 2 decimal places jQuery("#sum").html(sum.toFixed(2)); |
Categories: How-To's, Technology Add, form, howto, JQuery, Math, Sum, tips
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erics, November 9th, 2011 |
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date_default_timezone_set('America/New_York'); $datetime1 = new DateTime('2009-10-31'); $datetime2 = new DateTime('now'); $interval = $datetime1->diff($datetime2); print $interval->format('%a days_elapsed'); |
http://www.php.net/manual/en/datetime.diff.php
Categories: How-To's, Technology Date, Date Math, Delta, diff, Difference, Elapsed, howto, Math, php, time, tips
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erics, December 11th, 2010 $floor = int( $number / $increment ) * $increment;
Categories: How-To's, Technology Floor, howto, Math, tips
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