August 02, 2021 - Vim
First, select the text you want to copy using visual or visual line mode. Afterwards, type the following:
"*y" to select a register* is a register that references the system clipboardy to yank your selection into the specified registerJuly 12, 2021 - JavaScript
With ES6, we can use array destructuring to swap variables in a single line.
let x = 1;
let y = 2;
[x, y] = [y, x];
console.log(x); // 2
console.log(y); // 1February 09, 2021 - macOS
You can use cmd + shift + 3 to take a screenshot.
Afterwards, you can click the thumbnail that pops up in the corner of the screen to edit or save it. You can also wait for the thumbnail to go away after few seconds and the screenshot will be saved to your desktop.
cmd + shift + 4 allows you to select a portion of your screen to capturecmd + shift + 5 gives you full control over what portion of the screen to capture or even recordNovember 29, 2020 - Vim
You can use the built-in sort utility!
To perform a sort, first select the lines you want to sort using visual mode. Afterwards, press :, type sort, and then press enter.
Note that the default sort is based on unicode characters so the results may be unexpected (it accepts an optional regex argument to help with that!)
There are some neat options like u for removing duplicate lines, n for numeric sort, and sort! for sorting in reverse.
1 const nums = [ 2 9, 3 100, 4 100, 5 127, 6 18, 7 100, 8 2, 9 200, 10 300, 11 389, 12 50, 13 285, 14 85, 15 967, 16 5000, 17 ]; 18 19 console.log(nums); ~ ~ ~ NORMAL test.js jav… 5% ☰ 1/19 ㏑:1
November 16, 2020 - HTTP
Response header to a preflight request (OPTIONS) that indicates which headers can be used when making the actual request.
# Example request
curl -vX OPTIONS \
-H "Origin: https://yourdomain.com" \
-H "Access-Control-Request-Method: POST" \
-H "Access-Control-Request-Headers: X-Some-Header" \
https://www.someapi.com/
# Example response
# ...
< access-control-allow-origin: https://yourdomain.com
< access-control-allow-methods: OPTIONS,POST
< access-control-allow-headers: X-Some-Header
# ...https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Access-Control-Allow-Headers
Response header to an actual request that indicates which other response headers the client (ex: a browser) is allowed to access.
# Example request
curl -v -H "Origin: https://yourdomain.com" \
https://www.someapi.com/
# Example response
# ...
< access-control-allow-origin: https://yourdomain.com
< access-control-expose-headers: X-Some-Header
# ...https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Access-Control-Expose-Headers
November 09, 2020 - Fonts
Got a system font you want to convert into a web font?
cat font.ttf | npx ttf2woff2 >> font.woff2Need to support older browsers?
npx ttf2woff font.ttf font.woffSeeing command not found: npx?
You probably need to install Node.js.
October 30, 2020 - macOS
The keyboard shortcut for toggling hidden files in Finder is Cmd+Shift+. (Command + Shift + Period).
