A programming language is any set of rules that converts strings, or graphical program elements in the case of visual programming languages, to various kinds of machine code output. Programming languages are one kind of computer language, and are used in computer programming to implement algorithms.

Definitions

Expressions: evaluated to produce a value, eg. 4 + 10
Functional Programming: Pure functions who return the same output for the same given input each time
Functional Reactive Programming: Pure functions who return the same stream output for the same given input stream each time
Recursive: When a function or procedure calls itself. Used a lot in Functional Programming
Scope: region of a program where a declared method/class/variable etc. can operate.
Statement: denotes action to be performed, eg. x = 42
Stream: Data in a specific order, can be thought of as a directed graph

More Definitions on Foldoc

Erlang

TODO Look at build tool Rebar 3

TODO Attempt to build PDF to text shell program

TODO Make PDF to text program use Erlang processes

C++

Look at multiple inheritance

Read Tutorial
Decide way forward

TODO Look at operator precedence

TODO Look at bitwise patterns on files (like chmod unix)

TODO Look at STDLib implementations of strlen() strcopy()

TODO Look at stack, heap, data and text sections of memory

Python

Here’s a python formula:

from math import radians, cos
result = r*cos(radians(angle))
return result

Result:

Table:

airmass	zenith_seeing	delivered_seeing
1.2	0.95	6.384
1.4	1.1704854	9.1766055
1.2	1.1	7.392
1.3	1.2	8.736

Formula to generate image:

import matplotlib.pyplot as plt

x, y, z = zip(*delsee)

fig = plt.figure()
axes = fig.add_subplot(1,1,1)
axes.plot(y, z, marker='o')
fig.savefig(fname)

return fname

Sede	Max cites	H-index
Chile	257.72	21.39
Leeds	165.77	19.68
Sao Paolo	71.00	11.50
Stockholm	134.19	14.33
Morelia	257.56	17.67

Notes

Explorer

Programming Language