I've been using firefox for years... Firefox is cool. Slack huddle in my Firefox never works, I don't know why. But that's cool. If someone in the team needs a "huddle" I can give a reason and ask them to describe their problem instead. That works 99% and saves me a lot of time.
whatsapp requires to access to contacts on the phopne. otherwise it just shows a bunch of phone numbers and I never get who I'm talking to in the groups. And it shares my phone number to everyone.
Such a feature hasn't been changed and now I know why
1. People in a conversation with you (including a group conversation you are added to, which I believe you can limit to require your consent) can see your phone number
2. People who already have your number in their contacts can see that your number is registered with WhatsApp
In my team when someone asks me to look at some issues, my very first question is always where they see the alert. Because there are a huge number of "alert" channels. And I am very "happy" spending most of my days doing nothing much than searching and looking up things lolz
In the spacing section, the author's suggestion to use absolute spacing operator (e.g \;) is actually not recommended. a better way is to make `dx` a math operator (`d` is an operator isn't it?).
Some other suggestion is not actually recommended in the official documentation of amsmath as I recall.
I use \mathop{}\!{\mathrm d}} myself. That is a bit convoluted, but it takes care of the spacing in just about every context.. Of course, I put that in a macro definition so I don’t have to sprinkle it all over my document.
I love firefox.