Google Colab – a free environment to run Machine Learning Python
Google Colab is a great free environment for trying out python and Machine Learning tutorials … Read more »
ovi.ro
ovi.ro
Author Archives: Ovidiu Anicai
Thug life
Still getting added on LinkedIn, and lots of offers
MongoDB more indexes on Secondaries
I’ve been wondering for a time if it works, the documentation is not really clear if you can have different indexes on a replicaset secondary, maybe delayed or with priority 0. Using this feature you can do reports better on a … Read more »
Compare strings in PHP
Just read a comment in the PHP documentation and had another PHP madness moment. It seems you have to be really, really careful when comparing strings that include numbers… Command \ PHP Version 7.0.0 – 7.1.3 5.4.4 – 5.6.30 … Read more »
PHP switch case after default works normally
When you put the a case block after the default block the switch will work normally and fallback to the default only after testing all cases. The documentation doesn’t specify this directly, but there is a note with an example. … Read more »
How Tor works
Great photos explaining what is disclosed at each point when doing a request on the web, with or without Tor or HTTPS. The photo is provided by the EFF https://www.eff.org/pages/tor-and-https
Strings array access issue
What would you expect for this script to output? error_reporting(E_ALL); ini_set(‘display_errors’,1); $text = “abc”; var_dump(isset($text[‘key’])); var_dump((bool) $text[‘key’]); Maybe a notice? maybe some false there.. But if you have in mind PHP logic.. you surely know.. So, $text is a string … Read more »
Foreach with reference
If you iterate over an array with & you should unset the value variable after to not modify the array accidentally after. $array = array(‘a’, ‘b’, ‘c’, ‘d’); foreach($array as $key=>&$value) { if ($key = 3) { // change d … Read more »
PHP echo print question
Working with echo or print is very easy in PHP. At the begining it might be harder to understand concatenations or operations order, but after you master them is really easy. But there are some cases where you wonder how … Read more »
Line history on Git
# file path export FILE=file/path # line number export LINE=10 git log –format=format:%H $FILE | xargs -L 1 git blame $FILE -L $LINE,$LINE | uniq -c