Autosave: 2024-11-16 16:29:27

neuron/f2b582e1-cb67-4c06-b6ad-a3e7d0a4f307/Classes_in_Python.md

@@ -64,6 +64,21 @@ Key points to note:
 - As with functions, we can use docstrings to document the class. What you write
   here will show up in Intellisense etc
 
+## Private, protected members and methods
+
+As Python is not strictly typed the property accessors are not actually real and
+won't throw errors if violated. However there is a syntax convention.
+
+- Private
+
+  - `__self.property`
+  - `def __private method(self)...`
+
+- Protected
+
+- `_self.property`
+- `def _protected method(self)...`
+
 ## More complex class
 
 ```py

neuron/f2b582e1-cb67-4c06-b6ad-a3e7d0a4f307/Dictionaries_in_Python.md

@@ -131,3 +131,20 @@ properties with this shorthand:
 merged_dictionary = dictionary_one | dictionary_two
 
 ```
+
+## Spreading dictionary properties
+
+In JavaScript we can spread values from one object into a new object that
+inherits those values with `{...spreadValues, newProperty: 'foo'}`.
+
+This can be achieved in Python with the `|` union operator, e.g:
+
+```python
+text_base = {"height": 1, "font": font}
+
+heading_text = text_base | {
+    "bg": colors["accent"],
+    "fg": colors["background"],
+}
+
+```

neuron/f2b582e1-cb67-4c06-b6ad-a3e7d0a4f307/Terraform.md

@@ -0,0 +1,75 @@
+---
+tags: [AWS, IaC]
+created: Saturday, November 16, 2024
+---
+
+# Terraform
+
+## Authentication
+
+Terraform will default to the currently active AWS user providing you have your
+[AWS credentials](/zk/AWS_CLI.md) set-up.
+
+## Creating resources
+
+> Resources are specified in the `main.tf` file.
+
+Create a new S3 bucket:
+
+```hcl
+resource "aws_s3_bucket" "my_new_bucket" {
+    bucket = "my-new-bucket"
+}
+```
+
+At this point the resource doesn't exist so there is no ARN or ID. When the
+resource is created (through `terraform apply`) Terraform receives this info
+from AWS and store it in a state file.
+
+This info can be retrieved with `terraform show`, e.g:
+
+```
+resource "aws_s3_bucket" "my_new_bucket" {
+    id                    = "my-new-bucket"
+    arn                   = "arn:aws:s3:::my-new-bucket"
+    bucket                = "my-new-bucket"
+    bucket_domain_name    = "my-new-bucket.s3.amazonaws.com"
+ }
+
+```
+
+## Standard sequence
+
+Make your `terraform` directory, then `cd` and:
+
+### Initialise project
+
+```
+terraform init
+```
+
+This will create the file `.terraform.lock.hcl` which should be committed. Stuff
+in `.terraform/` can be git-ignored.
+
+### Check changes
+
+```
+terraform plan
+```
+
+Providing you have written a `main.tf`. The command will list the proposed
+changes to your resources.
+
+### Apply changes
+
+```
+terraform apply
+```
+
+### Destroy the resource
+
+Typically when you want to do a clean recreate.
+
+```
+terraform destoy
+```

neuron/f2b582e1-cb67-4c06-b6ad-a3e7d0a4f307/index.md

@@ -13,12 +13,15 @@ computer science.
 
 ![not-by-ai-badge](static/not-by-ai-alternative--light.svg)
  
-**Build ID:** c1b90fbf-731a-4de6-8c95-0dece40b5017
+**Build ID:** f2b582e1-cb67-4c06-b6ad-a3e7d0a4f307
 
-**Published:** Thu 14 Nov 2024 14:43:30
+**Published:** Sat 16 Nov 2024 16:29:25
 
 ### Recent edits 
 
+- [[Terraform]] 
+- [[Classes_in_Python]] 
+- [[Dictionaries_in_Python]] 
 - [[Using_SQLite_with_Python]] 
 - [[SQLite]] 
 - [[Working_with_directories_in_Python]] 
@@ -28,12 +31,9 @@ computer science.
 - [[f6564af9_AOL_and_early_internet_enclosure]] 
 - [[241fe1a3_the_Web_versus_modem_BBSs]] 
 - [[Weaving_the_Web_Berners_Lee]] 
-- [[c301a0b3-1d8_Mosaic_Netscape_and_Browser_Wars]] 
-- [[ecec56e6_precursors_to_search_engines]] 
-- [[The_History_of_Computing_Swade]] 
 
 
-### All notes (490) 
+### All notes (491) 
 
 - [[0716531c_rewilding_the_internet]] 
 - [[241fe1a3_the_Web_versus_modem_BBSs]] 
@@ -438,6 +438,7 @@ computer science.
 - [[Symlinks]] 
 - [[Syntax_of_propositional_logic]] 
 - [[Tags_in_Git]] 
+- [[Terraform]] 
 - [[Test_values_in_Bash]] 
 - [[Testing_Python_code]] 
 - [[Testing_basic_prop_passing_in_React]] 

zk/Classes_in_Python.md

@@ -64,6 +64,21 @@ Key points to note:
 - As with functions, we can use docstrings to document the class. What you write
   here will show up in Intellisense etc
 
+## Private, protected members and methods
+
+As Python is not strictly typed the property accessors are not actually real and
+won't throw errors if violated. However there is a syntax convention.
+
+- Private
+
+  - `__self.property`
+  - `def __private method(self)...`
+
+- Protected
+
+- `_self.property`
+- `def _protected method(self)...`
+
 ## More complex class
 
 ```py

zk/Dictionaries_in_Python.md

@@ -131,3 +131,20 @@ properties with this shorthand:
 merged_dictionary = dictionary_one | dictionary_two
 
 ```
+
+## Spreading dictionary properties
+
+In JavaScript we can spread values from one object into a new object that
+inherits those values with `{...spreadValues, newProperty: 'foo'}`.
+
+This can be achieved in Python with the `|` union operator, e.g:
+
+```python
+text_base = {"height": 1, "font": font}
+
+heading_text = text_base | {
+    "bg": colors["accent"],
+    "fg": colors["background"],
+}
+
+```

zk/Terraform.md

@@ -0,0 +1,75 @@
+---
+tags: [AWS, IaC]
+created: Saturday, November 16, 2024
+---
+
+# Terraform
+
+## Authentication
+
+Terraform will default to the currently active AWS user providing you have your
+[AWS credentials](/zk/AWS_CLI.md) set-up.
+
+## Creating resources
+
+> Resources are specified in the `main.tf` file.
+
+Create a new S3 bucket:
+
+```hcl
+resource "aws_s3_bucket" "my_new_bucket" {
+    bucket = "my-new-bucket"
+}
+```
+
+At this point the resource doesn't exist so there is no ARN or ID. When the
+resource is created (through `terraform apply`) Terraform receives this info
+from AWS and store it in a state file.
+
+This info can be retrieved with `terraform show`, e.g:
+
+```
+resource "aws_s3_bucket" "my_new_bucket" {
+    id                    = "my-new-bucket"
+    arn                   = "arn:aws:s3:::my-new-bucket"
+    bucket                = "my-new-bucket"
+    bucket_domain_name    = "my-new-bucket.s3.amazonaws.com"
+ }
+
+```
+
+## Standard sequence
+
+Make your `terraform` directory, then `cd` and:
+
+### Initialise project
+
+```
+terraform init
+```
+
+This will create the file `.terraform.lock.hcl` which should be committed. Stuff
+in `.terraform/` can be git-ignored.
+
+### Check changes
+
+```
+terraform plan
+```
+
+Providing you have written a `main.tf`. The command will list the proposed
+changes to your resources.
+
+### Apply changes
+
+```
+terraform apply
+```
+
+### Destroy the resource
+
+Typically when you want to do a clean recreate.
+
+```
+terraform destoy
+```