Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

r"
"
gm

Test String

Code Generator

Language

Generated Code

import Foundation let pattern = #"Hub\.config\.set\('\w*',\s*({[\s\S]*})"# let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines) let testString = #""" Hub = {}; Hub.config = { config: {}, get: function(key) { if (key in this.config) { return this.config[key]; } else { return null; } }, set: function(key, val) { this.config[key] = val; } }; Hub.config.set('sku', { valCartInfo : { itemId : '576938415361', cartUrl: '//cart.mangolane.com/cart.htm' }, apiRelateMarket : '//tui.mangolane.com/recommend?appid=16&count=4&itemid=576938415361', apiAddCart : '//cart.mangolane.com/add_cart_item.htm?item_id=576938415361', apiInsurance : '', wholeSibUrl : '//detailskip.mangolane.com/service/getData/1/p1/item/detail/sib.htm?itemId=576938415361&sellerId=499095250&modules=dynStock,qrcode,viewer,price,duty,xmpPromotion,delivery,upp,activity,fqg,zjys,amountRestriction,couponActivity,soldQuantity,page,originalPrice,tradeContract', areaLimit : '', bigGroupUrl : '', valPostFee : '', coupon : { couponApi : '//detailskip.mangolane.com/json/activity.htm?itemId=576938415361&sellerId=499095250', couponWidgetDomain: '//assets.mgcdn.com', cbUrl : '/cross.htm?type=weibo' }, valItemInfo : { defSelected: -1, skuMap : {";20549:103189693;1627207:811754571;":{"price":"528.00","stock":"2","skuId":"4301611864655","oversold":false}, ";20549:59280855;1627207:412796441;":{"price":"528.00","stock":"2","skuId":"4432149803707","oversold":false}, ";20549:59280855;1627207:196576508;":{"price":"528.00","stock":"2","skuId":"4018119863100","oversold":false}, ";20549:72380707;1627207:28341;":{"price":"528.00","stock":"2","skuId":"4166690818570","oversold":false}, ";20549:418624880;1627207:28341;":{"price":"528.00","stock":"2","skuId":"4166690818566","oversold":false}, ";20549:418624880;1627207:196576508;":{"price":"528.00","stock":"2","skuId":"4018119863098","oversold":false}, ";20549:72380707;1627207:3224419;":{"price":"528.00","stock":"2","skuId":"4166690818571","oversold":false}, ";20549:147478970;1627207:196576508;":{"price":"528.00","stock":"2","skuId":"4018119863094","oversold":false}, ";20549:72380707;1627207:384366805;":{"price":"528.00","stock":"2","skuId":"4432149803708","oversold":false}, ";20549:296172561;1627207:811754571;":{"price":"528.00","stock":"2","skuId":"4301611864659","oversold":false}, ";20549:72380707;1627207:1150336209;":{"price":"528.00","stock":"2","skuId":"4301611864664","oversold":false}, ";20549:147478970;1627207:93586002;":{"price":"528.00","stock":"2","skuId":"4018119863095","oversold":false}} ,propertyMemoMap: {"1627207:811754571":"黑色单里（预售） 年后2.29发货","1627207:93586002":"黑色加绒 现货","1627207:412796441":"黑色（兔毛） 现货","1627207:384366805":"米白色（兔毛） 现货","1627207:3224419":"驼色 现货","1627207:1150336209":"驼色单里（预售） 年后2.29发货","1627207:28341":"黑色 现货","1627207:196576508":"驼色加绒 现货"} } }); """# let stringRange = NSRange(location: 0, length: testString.utf16.count) let matches = regex.matches(in: testString, range: stringRange) var result: [[String]] = [] for match in matches { var groups: [String] = [] for rangeIndex in 1 ..< match.numberOfRanges { let nsRange = match.range(at: rangeIndex) guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue } let string = (testString as NSString).substring(with: nsRange) groups.append(string) } if !groups.isEmpty { result.append(groups) } } print(result)

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression