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behinger (s-ccs 001) 2023-09-13 14:22:46 +00:00
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cheatsheets/git.qmd Normal file
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material/1_mon/envs/envs_handout.qmd
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# Environments # Environments
### What is a environment** ### What is a environment
- A list of "installed" packages^[libraries, dlls, .so etc.] at certain versions - A list of "installed" packages^[libraries, dlls, .so etc.] at certain versions
- sometimes includes the operation system - sometimes includes the operation system
### **Reproducible** vs. **Replicable** ### **Reproducible** vs. **Replicable**
Reproducible: Someone else can get the same results given your code + data - **Reproducible**: Someone else can get the same results given your code + data
Replicable: Someone else can repeat the whole study on new data - **Replicable**: Someone else can repeat the whole study on new data
### Why do I need it? ### Why do I need it?
- Version control - Version control
@ -27,7 +27,7 @@
## Environemnts in Julia ## Environments in Julia
Every folder with an `Project.toml` file has it's own environment (see below) Every folder with an `Project.toml` file has it's own environment (see below)
The "base" environment is active by default: The "base" environment is active by default:

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material/1_mon/firststeps/firststeps_handout.qmd
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The [julia manual](https://docs.julialang.org/en/v1/manual/getting-started/) is excellent! The [julia manual](https://docs.julialang.org/en/v1/manual/getting-started/) is excellent!
::: :::
At this point we assume that you have Julia 1.9 installed, VSCode ready, and installed the VSCode Julia plugin. There are some more [recommended settings in VSCode](vscode.qmd) which are not necessary, but helpful. At this point we assume that you have [Julia 1.9 installed](../../../installation/vscode.qmd), VSCode ready, and installed the VSCode Julia plugin. There are some more [recommended settings in VSCode](../../../installation/vscode.qmd) which are not necessary, but helpful.
We further recommend to not use the small "play" button on the top right (which opens a new julia process everytime you change something), but rather open a new Julia repl (`ctrl`+`shift`+`p` => `>Julia: Start Repl`) which you keep open as long as possible. We further recommend to not use the small "play" button on the top right (which opens a new julia process everytime you change something), but rather open a new Julia repl (`ctrl`+`shift`+`p` => `>Julia: Start Repl`) which you keep open as long as possible.
::: callout-tip ::: callout-tip
VSCode automatically loads the `Revise.jl` package, which screens all your actively loaded packages/files and updates the methods instances whenever it detects a change. This is quite similar to `%autorelad 2` in python. If you use VSCode, you dont need to think about it, if you prefer a command line, you should put Revise.jl in your startup.jl file. VSCode automatically loads the `Revise.jl` package, which screens all your actively loaded packages/files and updates the methods instances whenever it detects a change. This is quite similar to `%autorelad 2` in ipython. If you use VSCode, you dont need to think about it, if you prefer a command line, you should put Revise.jl in your startup.jl file.
::: :::
@ -69,7 +69,11 @@ Each of those has a specific purpose, but most likely we will only need `a = not
myfunction(0,5;keyword1 = "notdefault") myfunction(0,5;keyword1 = "notdefault")
``` ```
1. everything before the `;` => positional, after => `kwargs` 1. everything before the `;` => positional, after => `kwargs`
2. returns two functions, due to the `b=123` optional positional argument 2. List all methods with that function name - returns two functions, due to the `b=123` optional positional argument
:: callout-tip
## Terminology function vs. method
Methods are instantiations of a abstract `function`
```julia ```julia
anonym = (x,y) -> x+y anonym = (x,y) -> x+y
@ -83,8 +87,22 @@ function mylongfunction(x)
end end
``` ```
```julia
myfunction(args...;kwargs...) = myotherfunction(newarg,args...;kwargs...)
```
#### Excourse: splatting & slurping
Think of it as unpacking / collecting something
```julia
a = [1,2,3]
+(a)
+(a...) # <1>
```
1. equivalent to `+(1,2,3)`
#### elementwise-function / broadcasting #### elementwise-function / broadcasting
Julia is very neat in regards of applying functions elementwise (also called broadcasting). (Matlab users know this already). Julia is very neat in regards of applying functions elementwise (also called broadcasting).
```julia ```julia
a = [1,2,3,4] a = [1,2,3,4]
@ -139,7 +157,7 @@ And a nice sideeffect: by doing this, we get rid of any specialized "serialized"
| variables | lowercase, lower_case| | variables | lowercase, lower_case|
| Types,Modules | UpperCamelCase| | Types,Modules | UpperCamelCase|
| functions, macro | lowercase | | functions, macro | lowercase |
| inplace / side-effects | `endwith!()` | | inplace / side-effects | `endwith!()`^[A functionname ending with a `!` indicates that inplace operations will occur / side-effects are possible. This is convention only, but in 99% of cases adopted] |
# Task 1 # Task 1
Ok - lot of introduction, but I think you are ready for your first interactive task. Ok - lot of introduction, but I think you are ready for your first interactive task.
@ -335,7 +353,8 @@ once defined, a type-definition in the global scope of the REPL cannot be re-def
::: :::
# Task 2 # Task 2
Follow [Task 2 here](tasks.qmd#2) ) Follow [Task 2 here](tasks.qmd#2)
# Julia Basics III # Julia Basics III
## Modules ## Modules
```julia ```julia

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--- ---
title: "Schedule" title: "Schedule"
--- ---
![Summerschool Schedule](https://www.simtech.uni-stuttgart.de/img/events/Summer-School/Flyer_Programm_langes_Format_2308010.png)
::: callout-note
The schedule is very preliminary and will most likely change drastically :)
:::
| | Sunday | Monday | Tuesday | Wednesday | Thursday | Friday |
|-----------|-----------|-----------|-----------|-----------|-----------|-----------|
| | Arrival | Basics of RSE and Julia | Julia+RSE | Julia+Viz+Simulation | Stats + Projects | Optimization + Project |
| | | | | | | |
| 09.00 | | | **Benjamin**: Advanced Git / Contributing (1+1) | **Hendrik**: All the nice Julia Features (1+1)? | **Marco** Resampling: Bootstrap & Permutation tests (2+2) | **Doug**: Optimized (bootstrap) code (1)? |
| 10.00 | | **Benjamin**: Welcome / What and why RSE? (1) | **Benjamin/Bene**: Unittests (1+1) | **Bene** Vizualization in Julia (1+1) | \~\~\~ | Project Work |
| 11.00 | | **Hendrik**: Why Julia? (1)? | \~\~\~\~ | \~\~\~ | | cont. |
| 12.00 | | **Bene**: First Steps - "Hello World" + Types (1+1) | \~\~\~\~ | \~\~\~ | | |
| 13.00 | | **Lunch** | **Lunch** | **Lunch** | **Lunch** | **Lunch** |
| 14.00 | | \~\~\~ | **Benjamin**: Continuous Integration (1+1) | **Lisa**: Simulating Data (1+1) | Project Work | Project Work |
| 15.00 | | **Bene**: Julia + Git + Packages/Environments (1+1) | **Lisa**: Code-Review (1+1)? | \~\~\~ | | cont. |
| 16.00 | | \~\~\~ | \~\~\~ | **Doug**: Things to keep in mind for datastorage (1+1)? | | |
| 17.00 | | **Bene**: MyFirstPackage.jl (1+1) | \~\~\~ | \~\~\~ | | Farewell |
| 18.00 | | \~\~\~ | **Bene**: PkgTemplates.jl (0.5+0.5) =\> wed/hendrik? | \~\~\~ | | |
| 19.00 | Pre-Get-together | Welcome-BBQ \@ SimTech | Social 1 | Social 2 | Social 3 | |
: {.striped .hover}
Missing Topics right now: Documentation, License, MultipleRegression? Simulating Data - Requirements regarding regression?