The bin/webpack-dev-server command is not as smart as e.g. rails server, where it shows the proper fix within the error message.

$ bin/webpack-dev-server                                                                  
yarn run v1.19.1
e...

The way MySQL's FULLTEXT tokenizer splits text into word tokens might not always be what you need. E.g. it splits a word at period characters.

Since the tokenizer has near-zero configuration options (minimum word length and stopwords list), you n...

While it might seem trivial to implement an invoice that sums up items and shows net, gross and vat totals, it actually involves a lot of rules and caveats. It is very easy to create invoices where numbers don't add up and a few cents are missing....

There is no reason to leave trailing whitespace characters in your project's files, so don't add any.

A git diff --check will tell you if there are any and you should not commit when you see them. So go ahead and switch your editor/IDE to autom...

When using git diff, you might encounter weird characters where umlauts (or any other UTF-8) characters should be. It looks like this:

R<C3><BC>ckg<C3><A4>ngig # should be "Rückgängig"

However, not Git is to blame [but the less comma...

When using the json gem, you might run into this error when using JSON.parse:

>> json = 'foo'.to_json
>> JSON.parse(json)
JSON::ParserError: 757: unexpected token at '"foo"'
	from /.../gems/json-...

The way Rational#to_s works on Ruby has changed from Ruby 1.9 on. Here is how to get the old behavior back.

You may want this for things where Rationals are being used, like when subtracting Date objects from one another.

What's happening?...

Vim allows recording a batch of commands as a macro. This is handy if you need to do the same things over and over.

Here is how:

1. Press q to enter macro mode.
2. Press a letter (not a number!) key to assign a slot to your macro.
3. You are n...

In Thunderbird, you can set custom font faces and sizes for reading plain-text e-mails. However, Thunderbird sometimes "randomly" does not respect your choices.

This is actually not a bug, but a rather weird feature: Fonts are defined **per encod...

Webpack is the future. We're using it in our latest Rails applications.

For tests, we want to compile assets like for production.
For parallel tests, we want to avoid 8 workers compiling the same files at the same time.
When assets did not change...