jhidding

``` {.py file=hello.py}
print("Hello, World!")
```

jhidding

```py
print("Hello, Amsterdam!")
```

jhidding

/* This takes a C2t3 from example 3.1 in CGAL manual on meshes.
   The `vertices_begin()` method returns non-const iterator, so
   we pass non-const reference. This should be fixed somehow.
 */
void write_to_obj(std::ostream &out, C2t3 &mesh)
{
  // create a map from Vertex_handle to the vertex index as it is
  // written into the OBJ file. Remember that OBJ indices start from 1.
  std::map<C2t3::Vertex_handle, unsigned> vertex_map;
  unsigned count = 1;

jhidding

#!/bin/bash
# Copyright 2018 Johan Hidding
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software

jhidding

#| Problem statement
 | =================
 |
 | You, a lab assistant in a remote mountain facility, accidentally release a
 | horde of zombies. You, the lab technician, professor and student intern need
 | to flee the laboratory across a rope bridge. The bridge carries a maximum of
 | two people, it's dark and you only managed to grab one lantern.
 | 
 | Each of you takes a different time to cross the bridge:
 |

jhidding

def something_dangerous(x):
    print("computing reciprocal of", x)
    return 1 / x
try:
    for x in [2, 1, 0, -1]:
        print("1/{} = {}".format(x, something_dangerous(x)))
        
except ArithmeticError as error:
    print("Something went terribly wrong:", error)
    

jhidding

print("\033[47;30m Netherlands\033[48;2;0;174;239;37m▌\033[38;2;255;255;255me\u20d2Science\u20d2\033[37m▐\033[47;30mcenter \033[m")

jhidding

export WORKON_PATH="${HOME}/.local/share/workon"

function workon() {
    source ${WORKON_PATH}/${1}/bin/activate
}

function create-python3-env() {
    py3-virtualenv ${WORKON_PATH}/${1}
}

jhidding

sed_program = """# usage: sed -f rot13.sed <filename>
y/abcdefghijklmnopqrstuvwxyz/nopqrstuvwxyzabcdefghijklm/
y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/NOPQRSTUVWXYZABCDEFGHIJKLM/
"""
 
message = "Vf gurer nalobql BHG gurer?"
 
with DockerContainer('busybox') as c:
    c.put_archive(
        Archive('w')

jhidding

class DockerContainer(object):
    """Easy interface to Docker API.
 
    This class encapsulates a part of the Docker API, with the goal
    of making it easier to start a container, add some files, run a
    few scripts, read the output, and then remove the container
    again.
 
    The object is a context manager for the created Docker container,
    in that it starts the container upon entry and exterminates the