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slide_r_programming_1.Rmd
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slide_r_programming_1.Rmd
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---
title: "Introduction To Programming in R (1)"
subtitle: "R Foundations for Life Scientists"
author: "Marcin Kierczak"
keywords: bioinformatics, course, scilifelab, nbis, R
output:
xaringan::moon_reader:
encoding: 'UTF-8'
self_contained: false
chakra: 'assets/remark-latest.min.js'
css: 'assets/slide.css'
lib_dir: libs
nature:
ratio: '4:3'
highlightLanguage: r
highlightStyle: github
highlightLines: true
countIncrementalSlides: false
slideNumberFormat: "%current%/%total%"
---
exclude: true
count: false
```{r,echo=FALSE,child="assets/header-slide.Rmd"}
```
<!-- ------------ Only edit title, subtitle & author above this ------------ -->
```{r,echo=FALSE,message=FALSE,warning=FALSE}
# load the packages you need
#library(dplyr)
#library(tidyr)
#library(stringr)
#library(ggplot2)
```
---
name: programming_language
# Computer program
--
* flow of data
--
* from one function to another
--
* each function does something to the data
--
# How?
--
> A **programming language** is a formal computer language or constructed language designed to communicate instructions to a machine, particularly a computer. Programming languages can be used to create programs to control the behavior of a machine or to express algorithms.
.small[[Wikipedia](https://en.wikipedia.org/wiki/Programming_language)]
--
# Three things to think about
* what *types* of data can I process?
--
* how do I *write* what I want?
--
* when does it *mean* anything?
---
# Three components of a language
--
* what *types* of data can I process — *type system*
--
* int — 1 2 5 9
* double — 1.23 -5.74
* char — a b test 7 9
--
* how do I *write* what I want — *syntax* defined by a language *grammar*
`2 * 1 + 1` vs. `(+ (* 2 1) 1)`
--
* when does it *mean* anything — *semantics*
--
* *Colorful yellow train sleeps on a crazy wave.* — has no generally accepted meaning
* *There is $500 on his empty bank acount.* — internal contradiction
---
name: topic2
# Where to start?
*Divide et impera* — divide and rule.
**Top-down approach:** define the big problem and split it into smaller ones. Assume you have solution to the small problems and continue — push the responsibility down.
Wishful thinking!
<!-- --------------------- Do not edit this and below --------------------- -->
---
name: end_slide
class: end-slide, middle
count: false
# Thank you. Questions?
```{r,echo=FALSE,child="assets/footer-slide.Rmd"}
```
```{r,include=FALSE,eval=FALSE}
# manually run this to render this document to HTML
rmarkdown::render("presentation_demo.Rmd")
# manually run this to convert HTML to PDF
#pagedown::chrome_print("presentation_demo.html",output="presentation_demo.pdf")
```