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How can I quickly sum all numbers in a file?

... Just for fun, let's benchmark it: $ for ((i=0; i<1000000; i++)) ; do echo $RANDOM; done > random_numbers $ time perl -nle '$sum += $_ } END { print $sum' random_numbers 16379866392 real 0m0.226s user 0m0.219s sys 0m...
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Why are flag enums usually defined with hexadecimal values

... Another fun fact with the x << y notation. 1 << 10 = KB, 1 << 20 = MB, 1 << 30 = GB and so on. It is really nice if you want to make a 16 KB array for a buffer you can just go var buffer = new byte[16 <<...
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Flash CS4 refuses to let go

...n't seem to solve the problem. I'm going to chalk this one up to Adobe bug fun tiem. I'm going to mark it as solved, however. – Ender Feb 3 '10 at 19:23 294 ...
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NoClassDefFoundError - Eclipse and Android

...to do was check the darn box for the jar in the "Order and Export" screen. Funny thing is that I only had to do this so that it would work on a Nook Tablet emulator. Did not have a problem on devices or other emulators. – Luis Jun 12 '12 at 19:58 ...
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How do you disable browser Autocomplete on web form field / input tag?

...w virtual keyboard this.blur(); this.focus(); }" /> Live Demo https://jsfiddle.net/danielsuess/n0scguv6/ // UpdateEnd Because Browser auto fills credentials to wrong text field!? I notice this strange behavior on Chrome and Safari, when there are password fields in the same form. I g...
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Download and open PDF file using Ajax

...ME_TO_SAVE_WITH_EXTENSION>"; link.click(); } }); <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> Updated answer using download.js $.ajax({ url: '<URL_TO_FILE>', success: download.bind(true, "<FILENAME_TO_SAVE_WITH_...
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How can building a heap be O(n) time complexity?

...d you mean to start at the bottom of the heap? – aste123 Dec 16 '15 at 18:14 4 @aste123 No, it is...
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Why shouldn't I use mysql_* functions in PHP?

What are the technical reasons for why one shouldn't use mysql_* functions? (e.g. mysql_query() , mysql_connect() or mysql_real_escape_string() )? ...
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Check to see if a string is serialized?

...ay to determine whether or not a string is the result of the serialize() function? 10 Answers ...
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JavaScript: How do I print a message to the error console?

...IE. We can work around that with: if (!console.debug){ console.debug = function(args){ console.log(args); } } – Rovanion Nov 26 '12 at 10:12 ...