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Meltdown and Spectre are two big vulnearbilities found in Intel and AMD chips out of there. The vulenarbility is so huge it affects up to 1995 chips.
On the raspberrypi, there is a very nice explanation of what Meltdown is.
First of all, the one who discovered this bug is a GENIUS, for sure.
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Ci sono una nuova generazione di “nullasapienti”, persone che con una inutile laurea (tipicamente in legge) diventano giornalisti dilettanti, seguono i trend della “blogosfera” e leggono magari qualche bel libro di comunicazione.
Il risultato è che pubblicano video che non sono scontati, non sono banali ma non sono neppure perle di saggezza. Sono ovvi. La cosa diventa meno bella se mettendoci la loro faccia, vogliono pure dei soldi da voi.
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Arduino is a great hardware for a lot of reason: easy to use, difficulto to break, it is a very solid 5-Volt board.
But it a way too much and it has a very limited amount of RAM. So I started exploring other more “different” solutions. I need an economy chip with some RAM on it. After some research, I stumpled upon a lot of so-called Arduino alternative…
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Vjdbc is a remote access for JDBC-Datasources developed more then ten years ago (last news are from 2007, with last comit from 2013.
The project was migrated to Maven 3, but the code base is very old.
I decided to give it a try, spin a github repository and started working on it, because you know, is nice to have a database driver proxy-logger :)
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Sometimes you need to remove nasty duplicate on a table, based on a subset of the column. On every big database there is something called “rowid” which can be used to indentify a column in a unique way. On PostgreSQL is called ctid, as we shall see:
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In Excel you can easily fill in a column with a list of values. Some times also in Emacs you my need to write down a bunch of similar code. The dotimes function with the “elsp eval” M-x : (Esc + : on windooze) will solve your trouble easily. Try out this code on scratch buffer:
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