09 Jan 2020
Using Ctrl-C to send SIGINT is the easiest and most habitual way to
kill a program. When SIGINT is received by a program, unless
explicitly handled, the program will be interrupted and close. In
this case, the socket we are listening on is not closed cleanly.
While not particularly necessary for future development, this becomes
obnoxious, as it takes up to a minute for the OS to clean up the open
socket, during which a new instance of the program cannot be started.
Read more
Tags: C++ , Midgard
08 Jan 2020
Currently, everything that happens on the C++ backend for Midgard is
on a single thread. This includes the static file serving, the
websocket handling, and the simulation itself all occur on a single
thread. All computation is done at request from the browser, and
can’t continue indefinitely, because the thread needs to return to
waiting for the next thread.
Read more
Tags: C++ , Midgard
02 Jan 2020
A few years ago, I worked on a C++ implementation of
NEAT,
a method for generating novel neural net topologies. Rather than
having a fixed topology, varying only the weights of a neural net,
NEAT also varies which nodes are connected to each other. This allows
for creation of minimal structures, capable of solving the problem
presented without having significant excess neurons.
Read more
Tags: C++ , Midgard
28 Jan 2018
- 1 cup warm water
- 1 package yeast
- 1 teaspoon sugar
- 2 tablespoons vegetable oil
- 1 teaspoon salt
- 2.5 cups flour
Read more
Tags: Recipes
28 Jan 2018
- 1 1/2 cups water
- 1 packet yeast
- 3 tablespoons brown sugar
- 3 tablespoons butter
- 3/4 teaspoon salt
Read more
Tags: Recipes
28 Jan 2018
- 1 baked pie shell
- 1 cup water
- 3/4 cup sugar
- 6 tablespoons butter
- 3 tablespoon flour
- 2 tablespoons vanilla extract
- 1 tablespoon almonds extract
- 1 quart blueberries
Read more
Tags: Recipes
26 Nov 2016
Emacs can launch subprocesses, which can be used to compile code immediately.
This is built in with the
M-x compile command.
It asks for the command to run, then runs it,
saving the output in the
*compile* buffer.
This is remarkably convenient,
removing the need to switch between terminal and editor.
Read more
Tags: C++ , Make , Emacs
29 Aug 2015
The makefile is starting to get rather large,
and so it would be difficult for a user to know all options that are available.
At this point, it is time to refactor the options into a separate configuration file.
Read more
Tags: C++ , Make
29 Aug 2015
Earlier,
we allowed each library to have individual compilation flags.
Here, we will re-implement this feature in a more flexible way,
and allow libraries to specify multiple directories that contain source code.
Read more
Tags: C++ , Make
28 Aug 2015
So far, we have dealt with C++ code exclusively.
Today, I was looking at the makefile, and I realized that it would be quite simple to compile C code as well.
In addition, we will generalize the code, so that our C++ files can have file extensions other than
.cc.
Read more
Tags: C++ , Make