This is a cheat sheet for how to perform various actions to ZSH, which can be tricky to find on the web as the syntax is not intuitive and it is generally not very well-documented.
| Description | Syntax |
|---|---|
| Get the length of a string | ${#VARNAME} |
| Get a single character | ${VARNAME[index]} |
Chaining promises in ClojureScript is best done using the thread-first macro, ->. Here's an example of using the fetch API:
(-> (js/fetch "/data")
(.then (fn [r]
(when-not (.-ok r)
(throw (js/Error. "Could not fetch /data")))
(.json r)))
The documentation 6.2.9.4. "Asynchronous generator-iterator methods" is phrased really ambiguously. To make matters worse, typing.AsyncGenerator is not specified fully correctly.
Here, I attempt to more clearly capture the actual interface contract, based on what I've read and observed. See also PEP 492 -- Coroutines with async and await syntax and PEP 525 -- Asynchronous Generators.
This might be useful to implement lower-level behaviors than you can with async for, like sending values into the generator function.
TSend = TypeVar('TSend', contravariant=True)
| Filter | Description | Example |
|---|---|---|
| allintext | Searches for occurrences of all the keywords given. | allintext:"keyword" |
| intext | Searches for the occurrences of keywords all at once or one at a time. | intext:"keyword" |
| inurl | Searches for a URL matching one of the keywords. | inurl:"keyword" |
| allinurl | Searches for a URL matching all the keywords in the query. | allinurl:"keyword" |
| intitle | Searches for occurrences of keywords in title all or one. | intitle:"keyword" |
| #!/bin/sh | |
| #_( | |
| #_DEPS is same format as deps.edn. Multiline is okay. | |
| DEPS=' | |
| {:deps {clj-time {:mvn/version "0.14.2"}}} | |
| ' | |
| #_You can put other options here | |
| OPTS=' |
A quick guide on how to read/write/modify ID3 metadata tags for audio / media files using ffmpeg.
FFmpeg has a free-form command line option that allows the user to specify key-value-pairs for encoding metadata. Let's take a look.
To list all global metadata tags for a media file, just set an input but no output file.
Instuctions available (moved) at REMOTE ORIGIN website: Extract Subtitles From mkv
| #!/usr/bin/osascript -l JavaScript | |
| ObjC.import('Cocoa') | |
| app = Application.currentApplication() | |
| app.includeStandardAdditions = true | |
| ObjC.registerSubclass({ | |
| name: 'MenuAction', | |
| methods: { |
