Long-limbed with reach. Polearm Master, Sentinel and Tunnel Fighter. Opportunity attack slow combo? [on hold]

So a Bugbear with a polearm has a 15ft reach(Long-Limbed) each creature who enters its reach gets attacked(Polearm Master) and they must stop if hit(Sentinel) they would have to take 3 turns to be able to attack the character or anyone by/behind them stopping every time they move 5ft(Tunnel Fighter)providing the attacks hit. This seems really OP.

Polearm Master:

When you take the Attack action and attack with only a glaive, halberd, or quarterstaff, you can use a bonus action to make a melee attack with the opposite end of the weapon. This attack uses the same ability modifier as the primary weapon. The weapon’s damage die for this attack is a d4, and the attack deals bludgeoning damage. While you are wielding a glaive, halberd, pike, or quarterstaff, other creatures provoke an opportunity attack from you when they enter the reach you have with that weapon.

Tunnel Fighter (Unearthed Arcana):

You excel at defending narrow passages, doorways, and other tight spaces. As a bonus action, you can enter a defensive stance that lasts until the start of your next turn. While in your defensive stance, you can make opportunity attacks without using your reaction, and you can use your reaction to make a melee attack against a creature that moves more than 5 feet while within your reach.

Sentinel:

You have mastered techniques to take advantage of every drop in any enemy’s guard, gaining the following benefits:

When you hit a creature with an opportunity attack, the creature’s speed becomes 0 for the rest of the turn. Creatures provoke opportunity attacks from you even if they take the Disengage action before leaving your reach. When a creature within 5 feet of you makes an attack against a target other than you (and that target doesn’t have this feat), you can use your reaction to make a melee weapon attack against the attacking creature

Go code doesnt work as intended [on hold]

package main import ( "fmt" "strings"  )  func main() {  var n int fmt.Scan(&n) var i int  for i = 0; i < n; i++ {     var s string     fmt.Scan(&s)     se := strings.Fields(s)     fmt.Println(se)  } } 

In the above when i run for n=2 and s=”f kjff” i get [f] [kjff] on different lines and program exits.Like in the case below.

 2 f kjff [f] [kjff] 

I am actually new to Go. Instead for running for 2 loops,it just processes one input and outputs it on 2 seperate lines.It should ask for 2 string input but it doesnt.This is the intended behaviour.I want it to be like

 2 fg df [fg,df] kl io [kl,io] 

What are the layers of website technology? [on hold]

Website design technology has evolved over the last 25 years, and has had to put up with a lot of nonsense with each new technology. I am aware of fundamental HTML and its evolutions, Javascript and how it allows dynamic content, CSS and its frankly bewildering set of seemingly not-very-well-thought-out options, the period where Macromedia Flash was a big thing, PHP and CGI server side scripts, and am aware of some of the almost code-free environments such as WordPress.

There are a lot of opinions of each, turning up noses at WordPress, thinking raw HTML is too old-school, the fact that different browsers did, still do and will continue to interpret the same code and render it differently. Responsiveness means different things to different developers, desktop pages are compromised on wide screens as a result.

What does the technology stack look like on a modern website?

Is there a level above which the weird browser incompatibilities are completely handled and standardised on, generic responsiveness layout rules are available, but not so far up the stack that you need WordPress and a pre-canned ‘theme’?

What’s the closest RAW build possible to the Grey Mouser in 5e? [on hold]

I am of course referring to the legendary figure of Fritz Lieber’s Lankhmar series (one of the things Gary Gygax said was his inspiration to invent D&D).

I am assuming this character is so off-the-hook awesome that I cannot see any way to make him using strictly RAW, but what’s the closest we can get?

Some things to keep in mind:

  • His acrobatics, stealth and persuasion are incredible (especially acrobatics)
  • His swordsmanship is fantastic, in a finesse-sort-of-way (rapier?), and when combined with a successful acrobatic move he can hit almost anything
  • He is devastating with a sling, e.g. can knock someone out or do great damage (a thing which seems outside the RAW in 5e)
  • He has a custom-made bodysuit that enhances stealth, and he is very hard to hit in melee (almost un-hittable!) despite that he has no armor or shield beyond this
  • He has some low-level arcane spellcasting abilities
  • While he is not immune to being charmed, he is fairly resistant to it

There may be other features I am overlooking from Lieber’s material, but those are the high points. What’s the closest you could come in RAW?