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@abelcallejo
abelcallejo / README.md
Last active April 8, 2025 22:39
Installing GDAL 3.2.1 on Amazon Linux 2

Installing GDAL 3.2.1 on Amazon Linux 2

gdal linux yum

As of this day, this is probably the only and fastest way of installing it.

Package requirements

Based from the GDAL and PROJ build requirements, here is the full list of required packages to install:

@dantonnoriega
dantonnoriega / us-state-ansi-fips.csv
Last active April 14, 2025 19:49
csv file of us state ansi fips codes that follows the us census variable names
stname st stusps
Alabama 01 AL
Alaska 02 AK
Arizona 04 AZ
Arkansas 05 AR
California 06 CA
Colorado 08 CO
Connecticut 09 CT
Delaware 10 DE
District of Columbia 11 DC
@jorinvo
jorinvo / challenge.md
Last active November 19, 2024 02:40
This is a little challenge to find out which tools programmers use to get their everyday tasks done quickly.

You got your hands on some data that was leaked from a social network and you want to help the poor people.

Luckily you know a government service to automatically block a list of credit cards.

The service is a little old school though and you have to upload a CSV file in the exact format. The upload fails if the CSV file contains invalid data.

The CSV files should have two columns, Name and Credit Card. Also, it must be named after the following pattern:

YYYYMMDD.csv.

@jboner
jboner / latency.txt
Last active May 18, 2025 13:01
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD