hendzen

40 ms·

361.
by hendzen 10y ago
I'm pretty sure this is a machine generated article.
362.
by hendzen 10y ago
Their shirts are just OK - I would avoid the oxfords particularly though as they are not very durable. The pants are great.
363.
Ex-Palantir Employees Are Struggling to Sell Their Shares(buzzfeed.com)
26 points by hendzen 10y ago|1 comments
364.
by hendzen 10y ago
In the HFT space, here are some big names: Tower Research Capital Hudson River Trading Jump Trading LLC Note that these firms are typically considerably more difficult to get an offer at than Google, FB, etc.
365.
by hendzen 10y ago
Main takeaway from that article - Alex Karp is a really odd guy.
366.
by hendzen 10y ago
If I was Snowden I would be very worried. If the US gets a hold of this guy I could see Putin offering Snowden up as a trade to get him back.
367.
by hendzen 10y ago
Why did you chuckle?
368.
by hendzen 10y ago
The people that use HN aren't the people that sign checks for enterprise support contracts. Guess what - database vendors like Oracle, MongoDB (to a much smaller extent) that get a bad rep on HN actually sign deals for real money.
369.
by hendzen 10y ago
You may be thinking of Kenton Varda's Ekam.
370.
by hendzen 10y ago
Next up - Dropbox starts conditionally disabling features if it detects that the user is a developer (i.e. XCode is installed or Terminal.app is in the list of running processes).
371.
by hendzen 10y ago
The actual orders are handled by Apex Clearing. Apex sells this client flow to a mix of Citadel, KCG, and a few others [0]. [0] - https://d2ue93q3u507c2.cloudfront.net/assets/robinhood/legal...
372.
by hendzen 10y ago
I'm guessing he had a team of people working his twitter account at a16z. It was a good marketing technique for the firm.
373.
by hendzen 10y ago
If you're using clang you can just turn on -Wpessimizing-move and the compiler will tell you when you have a std::move call that is inhibiting RVO. The rule of thumb is don't use std::move on a return value unless you are returnin
374.
by hendzen 10y ago
Honestly your best bet is to read everything Gregory Maxwell has ever written.
375.
by hendzen 10y ago
If you want to learn about quantitiative trading: 1) Active Portfolio Management: A Quantitative Approach for Producing Superior Returns and Controlling Risk 2) Quantitative Equity Portfolio Management: Modern Techniques and Applications
376.
by hendzen 10y ago
I will recommend Izabella Kaminska of the Financial Times.
377.
by hendzen 10y ago
That sounds like an interesting technique - but it unfortunately does not apply on a majority of real-world data. In particular I mean sorting non-English text which any serious database needs to be able to do. Subtracting characters doesn&
378.
by hendzen 10y ago
Database workloads tend to be very branch heavy, e.g. string comparisons. If you've ever programmed a GPU you know that taking a data-dependent branch serializes the execution of the GPU stream processing units. So already the 70-100x
379.
by hendzen 10y ago
This has been tried many times. Unless you are doing a computation with sufficient arithmetic intensity [0] the cost of shipping the data over PCIe and back dominates any gain you might get over a CPU. [0] - http://www.nersc.gov&
380.
by hendzen 10y ago
For this type of task I usually spin up an ipython/jupyter notebook and hammer something out with Pandas very quickly. It's an incredibly productive toolkit for quickly performing this type of task.
381.
by hendzen 10y ago
At $dayjob we use capnproto as our primary interchange format. I google for 'capnp'.
382.
by hendzen 10y ago
If you use MongoDB with the WiredTiger engine, the database pages are compressed with Snappy by default. On other systems you have the option of running the database on a filesystem that provides compression.
383.
by hendzen 10y ago
It's much simpler to just use an off-the-shelf compression (zlib, lz4, etc) on the database pages. This basically has the same effect, but also compresses common values.
384.
by hendzen 10y ago
There is an active market for iridium phone rentals for hiking/backpacking purposes, so they do get active use by civilians. Additionally in places like Alaska many people who live in remote areas have an iridium phone in as there is n
385.
by hendzen 10y ago
If I'm not mistaken, doesn't LMDB have a single, global write lock?
386.
by hendzen 10y ago
I have a lot of respect for the author of that page, Alex Gorrod. However, this benchmark is quite dated (2014). The WiredTiger codebase was still immature when it was written. Since WiredTiger's acquisition by MongoDB (the company) an
387.
by hendzen 10y ago
there is a type checker available: http://mypy-lang.org/
388.
by hendzen 10y ago
It would be cool to implement this as githook -> AWS Lambda -> publish to s3 bucket.
389.
by hendzen 10y ago
Change that final period to an exclamation point and you have a reasonably convincing Donald Trump tweet.
390.
by hendzen 10y ago
It turns out that the whole notion of a 'reference count' that tracks the exact number of handles is unnecessarily powerful. If you weaken the guarantee to two states - 0 or greater than 0, you can do even better. See SNZI (scalab

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