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

/
/
gm

Test String

Code Generator

Language

Generated Code

package main import ( "regexp" "fmt" ) func main() { var re = regexp.MustCompile(`(?m)\'results\':\s+\{\'(?<feature>[^\']+)\':\s+\{\'result\':\s+\'(?<result>[^\']+)`) var str = `{'requestId': 'cibilcreditscore/6a373431-014c-4531-8332-746c5033e85c', 'entity': 'CIBIL_CHECK', 'results': {'BALANCE_MAX1_10000_SEC_EXT_WOE_INT': {'result': '-9999', 'version': 'v4'}, 'BALANCE_MEAN1_10000_APPROVED_AMT_MEAN1_10000_POS_EXT_WOE_INT': {'result': '-9999.0', 'version': 'v4'}, 'CIBIL_ACC_DTCLOSED_FIRSTCLEND': {'result': '-9999', 'version': 'v4'}, 'CIBIL_ACC_LIMIT_OPEN_REV': {'result': '-9999', 'version': 'v4'}, 'CIBIL_CC_AMTOVERDUE_SUM': {'result': '-9999', 'version': 'v4'}, 'CIBIL_DPD_LAST_5DPD': {'result': '-9999', 'version': 'v4'}, 'CIBIL_DPD_MAX_13_18_NUM': {'result': '-9999', 'version': 'v4'}, 'CIBIL_DPD_RATE_10DPD_3M': {'result': '-9999', 'version': 'v4'}, 'CIBIL_ENQ_CNT_90D': {'result': '-9999', 'version': 'v4'}, 'CIBIL_ENQ_LN_NOHC_CNT_24M': {'result': '2', 'version': 'v4'}, 'CIBIL_ENQ_NOHC_TMSNC_LAST': {'result': '0', 'version': 'v4'}, 'CIBIL_NOHC_INSTL_PAID_NORMALLY_60M': {'result': '-9999', 'version': 'v4'}, 'CIBIL_P_OCCUPATION': {'result': 'N/A', 'version': 'v4'}, 'CIBIL_SCORE': {'result': '171.0', 'version': 'v4'}, 'DPD_NUM_ADJ_MAX1_10000_MEAN1_10000_SEC_EXT_WOE_INT': {'result': '-9999.0', 'version': 'v4'}, 'DPD_NUM_ADJ_MEAN1_10000_EXT_WOE_INT': {'result': '-9999.0', 'version': 'v4'}, 'FLAG_Cons_Loan_SUM1_EXT': {'result': '2', 'version': 'v4'}, 'FLAG_ENQ_ANY_SUM1_90_EXT': {'result': '2', 'version': 'v4'}, 'TS_ENQ_F_D': {'result': '0', 'version': 'v4'}, 'TS_OPEN_DT_F_SEC_CLS_D_EXT': {'result': '-9999', 'version': 'v4'}, 'TS_OPEN_DT_F_SEC_STAT_UNIF_CLSD_D_EXT_WOE_INT': {'result': '-9999', 'version': 'v4'}, 'cbActiveEmi': {'result': '-9999', 'version': 'v3'}, 'cbDisposableIncome': {'result': '-9999', 'version': 'v2'}, 'cbDpdMax18mNum': {'result': '-9999', 'version': 'v4'}, 'cbDpdRate1Dpd12m': {'result': '-9999', 'version': 'v4'}, 'cbEnqCnt90d': {'result': '-9999', 'version': 'v4'}, 'cbEstimatedIncome': {'result': '-9999', 'version': 'v3'}, 'ciAccVehClosedCnt': {'result': '-9999', 'version': 'v2'}, 'ciAmountMax1180Mean1180': {'result': '1.606425702811245', 'version': 'v6'}, 'ciAmountMean110000': {'result': '62250.0', 'version': 'v6'}, 'ciAmtOverdue2BalSum90': {'result': '-9999.0', 'version': 'v7'}, 'ciAmtOverdue2FaOvdRtExt': {'result': '-9999', 'version': 'v2'},` for i, match := range re.FindAllString(str, -1) { fmt.Println(match, "found at index", i) } }

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 Golang, please visit: https://golang.org/pkg/regexp/