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Is there a REAL performance difference between INT and VARCHAR primary keys?

...dex)) ENGINE=InnoDB; Then, I filled 10 million rows in each table with a PHP script whose essence is like this: $pdo = get_pdo(); $keys = [ 'alabam', 'massac', 'newyor', 'newham', 'delawa', 'califo', 'nevada', 'texas_', 'florid', 'ohio__' ]; for ($k = 0; $k < 10; $k++) { for ($j = 0; $j ...
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ES6 class variable alternatives

...ilar to the pattern of having $ at the beginning of variables that so many PHP programmers are used to. Just that little implication that "yeah, it's not the same exact thing...but look...it's still a variable because that is a way variables are done in some languages!" helps. –...
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Is it possible to force Excel recognize UTF-8 CSV files automatically?

... that's solved my issue too , in php it looks like this: $utf8_with_bom = chr(239) . chr(187) . chr(191) . $csvText; – Abdullah Dec 31 '13 at 7:09 ...
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Amazon S3 direct file upload from client browser - private key disclosure

... issue at GitHub please take a look on this Thanks. github.com/aws/aws-sdk-php/issues/1332 – usama Jul 18 '17 at 20:48  |  show 3 more comment...
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Can an AngularJS controller inherit from another controller in the same module?

... inherit calling $controller(): app.controller('ParentCtrl', function(etc...) { this.foo = 'bar'; }); app.controller('ChildCtrl', function($scope, $controller, etc...) { var ctrl = $controller('ParentCtrl as parent', {etc: etc, ...}); angular.extend(this, ctrl); ...
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Spring Boot application as a Service

...al /var/log directory by default. You just need to symlink your jar into /etc/init.d like so sudo link -s /var/myapp/myapp.jar /etc/init.d/myapp OR sudo ln -s ~/myproject/build/libs/myapp-1.0.jar /etc/init.d/myapp_servicename After that you can do the usual /etc/init.d/myapp start Then set...
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Setting PATH environment variable in OSX permanently

... You have to add it to /etc/paths. Reference (which works for me) : Here share | improve this answer | follow ...
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Why is Go so slow (compared to Java)?

...shed as the benchmarks game - shootout.alioth.debian.org/flawed-benchmarks.php – igouy Apr 24 '10 at 17:24 ...
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Is D a credible alternative to Java and C++? [closed]

... argue it's even behind so-called "scripting" languages like Python, Perl, PHP, Ruby, and even JavaScript in these regards. To be blunt, you simply can't build a large-scale, cross-platform application using D. With an immature standard library, no support in any modern IDEs (there are plugins for...
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How do I change the number of open files limit in Linux? [closed]

...For instance, the hard open file limit on Solaris can be set on boot from /etc/system. set rlim_fd_max = 166384 set rlim_fd_cur = 8192 On OS X, this same data must be set in /etc/sysctl.conf. kern.maxfilesperproc=166384 kern.maxfiles=8192 Under Linux, these settings are often in /etc/security/...