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Inspecting the Environment of a Running Process

Sometimes its useful to be able see the values of environment variables inrunning processes. We can use the following test program to see how well we canacco...

01 Dec 2014

Jane Street Tech Blog

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How to choose a teaching language

If you were teaching a programming course, what language would you teach it in?

17 Nov 2014

Jane Street Tech Blog

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What the interns have wrought: RPC_parallel and Core_profiler

We’re in the midst of intern hiring season, and so we get a lot of questionsabout what it’s like to be an intern at Jane Street. One of the things peoplemost...

16 Oct 2014

Jane Street Tech Blog

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What is gained and lost with 63-bit integers?

Almost every programming language uses 64-bit integers on typical modern Intelmachines. OCaml uses a special 63-bit representation. How does it affect OCaml?

29 Sep 2014

Jane Street Tech Blog

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The ML Workshop looks fantastic

I’m a little biased, by being on the steering committee, but this year’s MLworkshop looks really interesting. Here’s a link to the program:

31 Jul 2014

Jane Street Tech Blog

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Simple top-down development in OCaml

Often when writing a new module, I want to write the interface first and savethe implementation for later. This lets me use the module as a black box,extendi...

18 Jul 2014

Jane Street Tech Blog

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What's in a name?

In the once upon a time days of the First Age of Magic, the prudent sorcererregarded his own true name as his most valued possession but also the greatestt...

10 Jul 2014

Jane Street Tech Blog

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Inspecting Internal TCP State on Linux

Sometimes it can be useful to inspect the state of a TCP endpoint. Things suchas the current congestion window, the retransmission timeout (RTO), duplicateac...

09 Jul 2014

Jane Street Tech Blog

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