##! The following curl commands can be used to get the operators:

##! curl -s https://www.mongodb.com/docs/manual/reference/operator/update.md | grep -oP '\[\`\$.*\`\]' | cut -d\` -f2 | sort -u

##! curl -s https://www.mongodb.com/docs/manual/reference/operator/aggregation.md | grep -oP '\[\`\$.*\`\]' | cut -d\` -f2 | sort -u

##! curl -s https://www.mongodb.com/docs/manual/reference/operator/query.md | grep -oP '\[\`\$.*\`\]' | cut -d\` -f2 | sort -u

##!

abs

accumulator

acos

acosh

add

addToSet

all

allElementsTrue

and

anyElementTrue

arrayElemAt

arrayToObject

asin

asinh

atan

atan2

atanh

avg

between

binarySize

bit

bitAnd

bitNot

bitOr

bitXor

bottom

bottomN

bsonSize

bucket

bucketAuto

ceil

cmp

concat

concatArrays

cond

convert

cos

cosh

count

covariancePop

covarianceSamp

currentDate

dateAdd

dateDiff

dateFromParts

dateFromString

dateSubtract

dateToParts

dateToString

dateTrunc

dayOfMonth

dayOfWeek

dayOfYear

degreesToRadians

denseRank

derivative

div

divide

documentNumber

each

elemMatch

exists

exp

expMovingAvg

expr

filter

first

firstN

floor

function

getField

group

gt

gte

hour

ifNull

in

inc

indexOfArray

indexOfBytes

indexOfCP

integral

isArray

isNumber

isoDayOfWeek

isoWeek

isoWeekYear

jsonSchema

last

lastN

let

like

linearFill

literal

ln

locf

log

log10

ltrim

map

max

maxN

median

mergeObjects

meta

millisecond

min

minN

minute

month

mul

multiply

natural

ne

nin

objectToArray

or

percentile

pop

position

pow

project

pull

pullAll

push

radiansToDegrees

rand

range

rank

reduce

regexFind

regexFindAll

regexMatch

rename

replaceAll

replaceOne

reverseArray

round

rtrim

sampleRate

second

set

setDifference

setEquals

setField

setIntersection

setIsSubset

setOnInsert

setUnion

setWindowFields

shift

sin

sinh

size

slice

sort

sortArray

split

sqrt

stdDevPop

stdDevSamp

strLenBytes

strLenCP

strcasecmp

substr

substrBytes

substrCP

subtract

sum

switch

tan

tanh

toBool

toDate

toDecimal

toDouble

toHashedIndexKey

toInt

toLong

toLower

toObjectId

toString

toUUID

toUpper

top

topN

trim

trunc

tsIncrement

tsSecond

type

unset

week

xor

year

zip

SecRule REQUEST_COOKIES|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?i)\[?\$(?:a(?:bs|c(?:cumulator|osh?)|dd(?:ToSet)?|ll(?:ElementsTrue)?|n(?:d|yElementTrue)|rray(?:ElemA|ToObjec)t|sinh?|tan[2h]?|vg)|b(?:etween|i(?:narySize|t(?:And|Not|(?:O|Xo)r)?)|ottomN?|sonSize|ucket(?:Auto)?)|c(?:eil|mp|o(?:n(?:cat(?:Arrays)?|d|vert)|sh?|unt|variance(?:Po|Sam)p)|urrentDate)|d(?:a(?:te(?:Add|Diff|From(?:Parts|String)|Subtract|T(?:o(?:Parts|String)|runc))|yOf(?:Month|Week|Year))|e(?:greesToRadians|nseRank|rivative)|iv(?:ide)?|ocumentNumber)|e(?:(?:a|lemMat)ch|q|x(?:ists|p(?:MovingAvg|r)?))|f(?:i(?:lter|rstN?)|loor|unction)|g(?:etField|roup|te?)|(?:hou|xo|yea)r|i(?:fNull|n(?:c|dexOf(?:Array|Bytes|CP)|tegral)?|s(?:Array|Number|o(?:DayOfWeek|Week(?:Year)?)))|jsonSchema|l(?:astN?|et|i(?:ke|(?:nearFil|tera)l)|n|o(?:cf|g(?:10)?)|t(?:e|rim)?)|m(?:a(?:p|xN?)|e(?:dian|rgeObjects|ta)|i(?:llisecond|n(?:N|ute)?)|o(?:d|nth)|ul(?:tiply)?)|n(?:atural|e|in|o[rt])|o(?:bjectToArray|r)|p(?:ercentile|o(?:[pw]|sition)|roject|u(?:ll(?:All)?|sh))|r(?:a(?:diansToDegrees|n(?:[dk]|ge))|e(?:(?:duc|nam)e|gex(?:Find(?:All)?|Match)?|place(?:All|One)|verseArray)|ound|trim)|s(?:(?:ampleRat|lic)e|e(?:cond|t(?:Difference|(?:Equal|WindowField)s|Field|I(?:ntersection|sSubset)|OnInsert|Union)?)|(?:hif|pli|qr)t|i(?:nh?|ze)|ort(?:Array)?|t(?:dDev(?:Po|Sam)p|r(?:Len(?:Bytes|CP)|casecmp))|u(?:b(?:str(?:Bytes|CP)?|tract)|m)|witch)|t(?:anh?|ext|o(?:Bool|D(?:(?:at|oubl)e|ecimal)|HashedIndexKey|Int|Lo(?:ng|wer)|ObjectId|String|U(?:UID|pper)|pN?)|r(?:im|unc)|s(?:Increment|Second)|ype)|unset|w(?:eek|here)|zip)\]?" \