Switch-hash structures — Have you ever had a situation where you need to get data from a switch-case block somewhere, and it needs to happen once and it needs to happen somewhere here and now. For example during array initialization? And you don’t want to carry code somewhere, create separate variables which will…

Everyday Helpful Things — Node.JS deepEqual Not everyone knows that Node.js has out of the box tools to compare 2 objects by value. In fact, here is the code for you: Easy, easy! Conditional debug comment An example of how you can switch code blocks by changing just 1 character when debugging applications:

A short memo for the basic commands I use on a daily basis — table Log object data with table formatting by passing in a data object in with optional column headings. This is a shortcut for console.table() $_ Returns the value of the most recently evaluated expression. $0 — $4 This commands work as a historical reference to the last five DOM elements inspected within the Elements panel…

iTerm2, bash, tips & tricks — I recently wondered how to create hyperlinks in the terminal and found a way that worked for me in iTerm2 on Mac OS. You can create clickable links with this clever command: echo -e '33]8;;'"${url}"'a'"${link_title}"'33]8;;a' You declare $url and $link_title, and the output is this beauty:

Little library — I wrote a small wrapper function to output the colored variable prints to the terminal. The peculiarity of the library is that, like in PHP, the var_dump function is in the global scope. You just need to write import vardump in one startup file and then the var_dump function will be available in all modules that you connect to this script. Installation pip install varsdump Enable

And save state after changes — To transfer a running Docker container to another server, you can follow these general steps: Export the container as an image: docker export <container_id> > container.tar Copy the container.tar file to the new server using scp or any other file transfer method: scp container.tar user@new_server_ip:/path/to/destination Import the container on the…

Little library — I wrote a small wrapper function to output the colored variable prints to the terminal Alternate mode const vars_dump_mode = 1;

For web developers — DNS propagation refers to the duration required for updates made to a domain’s DNS records to be implemented across the internet. When you modify a domain’s DNS configuration, the changes may not be instantly visible worldwide on the internet. …

On pure JavaScript — No comment const blob2base64 = (blob, mimeType) => { return new Promise((resolve, reject) => { const reader = new FileReader(); reader.onloadend = () => { const dataUrlPrefix = `data:${mimeType};base64,`; const base64WithDataUrlPrefix = reader.result; const base64 = base64WithDataUrlPrefix.replace(dataUrlPrefix, ''); resolve(base64); }; reader.onerror = reject; reader.readAsDataURL(blob); }); }; const obj = { hello: 'world' }; const mimeType = 'application/json'; const blob = new Blob([JSON.stringify(obj, null, 2)], { type: mimeType }); blob2base64(blob, mimeType).then(base64 => { console.log(base64); }); // or const base64 = await blob2base64(blob, mimeType); console.log(base64);