Goals: Add links that are reasonable and good explanations of how stuff works. No hype and no vendor content if possible. Practical first-hand accounts of models in prod eagerly sought.

I screwed up using git ("git checkout --" on the wrong file) and managed to delete the code I had just written... but it was still running in a process in a docker container. Here's how I got it back, using https://pypi.python.org/pypi/pyrasite/ and https://pypi.python.org/pypi/uncompyle6
apt-get update && apt-get install gdb
CREATE TABLE book_lines | |
( | |
id serial primary key, | |
book_line text not null | |
); |
class HyperLogLogStoreUDAF extends UserDefinedAggregateFunction { | |
override def inputSchema = new StructType() | |
.add("stringInput", BinaryType) | |
override def update(buffer: MutableAggregationBuffer, input: Row) = { | |
// This input Row only has a single column storing the input value in String (or other Binary data). | |
// We only update the buffer when the input value is not null. | |
if (!input.isNullAt(0)) { | |
if (buffer.isNullAt(0)) { |
Kafka acts as a kind of write-ahead log (WAL) that records messages to a persistent store (disk) and allows subscribers to read and apply these changes to their own stores in a system appropriate time-frame.
Terminology:
Originally published in June 2008
When hiring Ruby on Rails programmers, knowing the right questions to ask during an interview was a real challenge for me at first. In 30 minutes or less, it's difficult to get a solid read on a candidate's skill set without looking at code they've previously written. And in the corporate/enterprise world, I often don't have access to their previous work.
To ensure we hired competent ruby developers at my last job, I created a list of 15 ruby questions -- a ruby measuring stick if you will -- to select the cream of the crop that walked through our doors.
Candidates will typically give you a range of responses based on their experience and personality. So it's up to you to decide the correctness of their answer.
Since this is on Hacker News and reddit...
_t
in my types. I spend a lot of time at a level where I can do that; "reserved for system libraries? I am the system libraries".char *
s.type * name
, however, is entirely intentional.*.pyc | |
bin/ | |
include/ | |
lib/ |