15 Feb 2017
Ezirmin is an easy interface over the
Irmin, a library database for building
persistent mergeable data structures based on the principles of Git. In this
post, I will primarily discuss the Ezirmin library, but also discuss some of the
finer technical details of mergeable data types implemented over Irmin.
30 Jun 2016
Behavioural types such as session types, contracts and choreography describe the
behaviour of a software entity as a sequence of operations on a resource such
as a communication channel, web service session or a file descriptor.
Behavioural types capture well-defined interactions, which are enforced
statically with the help of type system machinery. In this post, I will describe
a lightweight embedding of behavioural types in OCaml using polymorphic variants
through a series of examples. The complete source code for the examples is
11 Jun 2016
Efficient concurrent programming libraries are essential for taking advantage of
fine-grained parallelism on multicore hardware. In this post, I will introduce
reagents, a composable, lock-free
concurrency library for expressing fine-grained parallel programs on Multicore
OCaml. Reagents offer a
high-level DSL for experts to specify efficient concurrency libraries, but also
allows the consumers of the libraries to extend them further without knowing the
details of the underlying implementation.
16 May 2016
This is a short tutorial on how to build
Reason apps for an ARM target with the help
of Docker. I am using Docker for
Mac, which is
still under beta program. Using Docker for development has two important
advantages over traditional cross-compilation. First, the Reason toolchain comes
packaged as a Docker image and hence no local installation is necessary.
Secondly, cross-compilers are often tricky to get right. Docker for Mac comes
with multiarch support and hence removes the need for traditional
27 Oct 2015
In the last
I described a flat allocation profiler for OCaml 4.02 bytecode interpreter.
In this post, I’ll describe further developments which add support for call
stack information and better location information. Lets dive straight to the