This article marks the end of the second edition of 24 days of Rust. I hope
you enjoyed it and maybe found inspiration for a project or two. I sure
did :-) Some of the libraries I wrote about are familiar to almost entire
Rust community. Some are fairly obscure but I find them interesting.
Regardless, I learned a lot just by writing, trying to come up with meaningful
code examples and editing my drafts. This was my intention all along - to
learn something for myself while contributing these articles to the community.
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Today's article is another throwback to the first edition of 24 days of Rust.
In one of the final posts I
wrote about interesting projects
built with Rust. That was even before the language hit version 1.0.
Two years later and we're at 1.14. Servo,
iota and
coreutils are still going strong.
It's surely worth checking them out again, but I'm going to introduce a few
more Rust projects that emerged during the last two years.
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lettre
is a library to send emails over
SMTP from our Rust applications. Like many other crates in the growing,
but still young Rust ecosystem, it is still a work in progress. But while
there are a few features missing from lettre
, we can send some emails
right now!
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Today we're going to take a brief look at two crates from the same author -
Andy Barron. The first of them is
app_dirs
- a useful library
to find platform-dependent directories, such as application configuration,
data directory or cache. The second crate for today is
preferences
, which provides a
simple way of managing user preferences and other data relevant to our program.
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In the first volume of 24 Days of Rust, I've
written about hyper
as the Rust HTTP toolkit. A lot of things have changed in the last two years,
but hyper is still the best solution for HTTP in Rust.
However, hyper
is undergoing some major changes to use
tokio
for async I/O. While this
will be fantastic for use cases where performance is top priority,
it will also make hyper
APIs a bit more complex. It's good to know about
event loops, futures and services, but sometimes we just want to send a GET
request and call it a day.
Sean McArthur created Reqwest specifically
for such scenarios. It is a high level HTTP client built on top of hyper
.
The situation here is somewhat similar to Python, where
requests provides a
simple API on top of heavy urllib3
machinery. Reqwest
is relatively new
compared to requests
, but it has the same goal - to make simple HTTP requests
easy and delegate complex tasks to hyper
.
Reqwest
also uses OS-provided TLS support if possible. This avoids a lot of
pain setting up OpenSSL on Windows.
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