travel
Some pictures taken in Boston and Cambridge, US. Use them as you please with only one restriction: if used in public (blog, presentation , news article...), cite me or this web/post. Can't be used to train AI/ML algorithms.
Spark
Recently I have been discussing with some colleagues the advantages of type-safe languages, the main reason I ditched python for Scala. Scala provides, for me the best of both worlds: the compiler is smart enough to determine variable types, and in the most cases it even can infer return types
travel
Some pictures taken in Yogyakarta, Indonesia. Use them as you please with only one restriction: if used in public (blog, presentation , news article...), cite me or this web/post. Can't be used to train AI/ML algorithms. Borobudur Amazing temple. I heavily recomend to do a tour with
travel
Some pictures taken in Rome. Use them as you please with only one restriction: if used in public (blog, presentation , news article...), cite me or this web/post. Can't be used to train AI/ML algorithms. Ostia Antica Ostia was the port of Rome. Beautiful place next to
scala
Some weeks ago I co-organized a Scala BCN meetup where we implemented a Bank account class in pairs and TDD. Easy for any of you that are starting with Scala. Here you have the github link [https://github.com/martsec/bankingKata] to try it by yourself! Copy from the README.
Bitcoin
> La certidumbre de que todo está escrito nos anula o nos afantasma. --- Jorge Luis Borges, La biblioteca de Babel La biblioteca de Babel és un concepte simple però profund: un espai on tota combinació possible de caràcters està escrita, guardada i pot ser trobada per qualsevol persona. On
Spark
Graphs have been around quite a while. In fact, the first paper in the history of graph theory was written by Euler himself in 1736! However, it wasn't until 142 years later when the term graph was introduced in a paper published in Nature. Despite those shiny names,
ghost
As a person comming from physics and with interest in coding, the two things I value the most are \(\LaTeX\) equations and syntax highlithing. Here I present you the two libraries that allow to have both passions in the same blog (yaaay!) Foremost, the important one: \(\LaTeX\), \(\LaTeX\), \(\LaTeX\). Did
Spark
A pivot table is an old friend of Business Intelligence: it allows to summarize the data of another table, usually by performing aggregations (sum, mean, max, ...) on aggregated data. They are found in multiple reporting tools (i.e. Qlik, Tableau and Excel) and analytical RDBMS (i.e. Oracle) also implement
Recently I have tried to use Jupyter notebook to test some data science pipelines in Spark. This project turned out to be more difficult than the expected, with a couple nasty errors and with a new blog post promise > TL;DR: Infinite problems to install scala-spark kernel in an
Spark
For running a spark local cluster (one machine is represented by one threads). The * is to match the number of cores available on the machine. Put a number to force the number of threads desired. spark-shell --master local[*] If you run it locally, in order to assign more memory to
BTC
I just found a couple of nasty errors that didn't allowed me to install trezor-agent via pip. A couple of examples are: Failed building wheel for hidapi /usr/bin/ld: cannot find -ludev collect2: error: ld returned 1 exit status error: command 'x86_64-linux-gnu-gcc' failed with