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

/
/
g

Test String

Code Generator

Language

Generated Code

// include the latest version of the regex crate in your Cargo.toml extern crate regex; use regex::Regex; fn main() { let regex = Regex::new(r"\<listRel:entityId\>(\d+)[\s\w]+<\/listRel:entityId\>").unwrap(); let string = "<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"> <soapenv:Header> <platformMsgs:documentInfo xmlns:platformMsgs=\"urn:messages_2016_1.platform.webservices.netsuite.com\"> <platformMsgs:nsId>WEBSERVICES_4485702_0725201720695377301235376538_1740c596260</platformMsgs:nsId> </platformMsgs:documentInfo> </soapenv:Header> <soapenv:Body> <searchResponse xmlns=\"urn:messages_2016_1.platform.webservices.netsuite.com\"> <platformCore:searchResult xmlns:platformCore=\"urn:core_2016_1.platform.webservices.netsuite.com\"> <platformCore:status isSuccess=\"true\"/> <platformCore:totalRecords>1</platformCore:totalRecords> <platformCore:pageSize>1000</platformCore:pageSize> <platformCore:totalPages>1</platformCore:totalPages> <platformCore:pageIndex>1</platformCore:pageIndex> <platformCore:searchId>WEBSERVICES_4485702_0725201720695377301235376538_1740c596260</platformCore:searchId> <platformCore:recordList> <platformCore:record internalId=\"13094669\" xsi:type=\"listRel:Customer\" xmlns:listRel=\"urn:relationships_2016_1.lists.webservices.netsuite.com\"> <listRel:entityId>917857 James Bond</listRel:entityId> <listRel:isPerson>true</listRel:isPerson> <listRel:firstName>James</listRel:firstName> <listRel:lastName>Bond</listRel:lastName> <listRel:companyName>Anonymous Customer (Sales Inbox)</listRel:companyName> <listRel:entityStatus internalId=\"13\"> <platformCore:name>CUSTOMER-Closed Won</platformCore:name> </listRel:entityStatus> <listRel:parent internalId=\"4453\"> <platformCore:name>2 Anonymous Customer (Sales Inbox)</platformCore:name> </listRel:parent> <listRel:phone>(925) 206-3542</listRel:phone> <listRel:email>jb@mi6.com</listRel:email> <listRel:isInactive>false</listRel:isInactive> <listRel:category internalId=\"6\"> <platformCore:name>Other (.com)</platformCore:name> </listRel:category> <listRel:language>_usEnglish</listRel:language> <listRel:dateCreated>2017-07-17T15:13:48.000-07:00</listRel:dateCreated> <listRel:emailPreference>_default</listRel:emailPreference> <listRel:creditHoldOverride>_auto</listRel:creditHoldOverride> <listRel:unbilledOrders>0.0</listRel:unbilledOrders> <listRel:consolUnbilledOrders>0.0</listRel:consolUnbilledOrders> <listRel:consolOverdueBalance>0.0</listRel:consolOverdueBalance> <listRel:consolDepositBalance>0.0</listRel:consolDepositBalance> <listRel:consolBalance>0.0</listRel:consolBalance> <listRel:consolAging>0.0</listRel:consolAging> <listRel:consolAging1>0.0</listRel:consolAging1> <listRel:consolAging2>0.0</listRel:consolAging2> <listRel:consolAging3>0.0</listRel:consolAging3> <listRel:consolAging4>0.0</listRel:consolAging4> <listRel:currency internalId=\"1\"> <platformCore:name>US Dollars</platformCore:name> </listRel:currency> <listRel:shipComplete>false</listRel:shipComplete> <listRel:taxable>true</listRel:taxable> <listRel:taxItem internalId=\"1178\"> <platformCore:name>AVATAX</platformCore:name> </listRel:taxItem> <listRel:aging>0.0</listRel:aging> <listRel:aging1>0.0</listRel:aging1> <listRel:aging2>0.0</listRel:aging2> <listRel:aging3>0.0</listRel:aging3> <listRel:aging4>0.0</listRel:aging4> <listRel:giveAccess>false</listRel:giveAccess> <listRel:accessRole internalId=\"14\"> <platformCore:name>Customer Center</platformCore:name> </listRel:accessRole> <listRel:receivablesAccount internalId=\"-10\"> <platformCore:name>Use System Preference</platformCore:name> </listRel:receivablesAccount> <listRel:lastModifiedDate>2017-07-25T09:07:54.000-07:00</listRel:lastModifiedDate> <listRel:stage>_customer</listRel:stage> <listRel:emailTransactions>false</listRel:emailTransactions> <listRel:printTransactions>false</listRel:printTransactions> <listRel:faxTransactions>false</listRel:faxTransactions> <listRel:isBudgetApproved>false</listRel:isBudgetApproved> <listRel:globalSubscriptionStatus>_softOptIn</listRel:globalSubscriptionStatus> <listRel:customFieldList> <platformCore:customField internalId=\"3153\" scriptId=\"custentity_cseg_v_subsidiary\" xsi:type=\"platformCore:SelectCustomFieldRef\"> <platformCore:value internalId=\"1\" typeId=\"448\"> <platformCore:name>North America</platformCore:name> </platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"6\" scriptId=\"custentity_esc_last_modified_date\" xsi:type=\"platformCore:DateCustomFieldRef\"> <platformCore:value>2017-07-24T22:00:00.000-07:00</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"2416\" scriptId=\"custentity_muv_synctomarketo\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"1498\" scriptId=\"custentity_pri_line_item_modifier_entity\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"2269\" scriptId=\"custentity_remove_from_campaign\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"3125\" scriptId=\"custentity_v_auto_created_web_company\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"3027\" scriptId=\"custentity_v_companygroup\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"3157\" scriptId=\"custentity_v_cust_require_po\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"1149\" scriptId=\"custentity_v_demo_customer\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"2266\" scriptId=\"custentity_v_do_not_call\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"601\" scriptId=\"custentity_v_do_not_sync_w_parent\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"2885\" scriptId=\"custentity_v_fromopportunity\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"3141\" scriptId=\"custentity_v_group_domains\" xsi:type=\"platformCore:StringCustomFieldRef\"> <platformCore:value>ERROR: Invalid Expression</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"2867\" scriptId=\"custentity_v_hot_activity_marketo\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"3214\" scriptId=\"custentity_v_last_sent_to_marketo\" xsi:type=\"platformCore:DateCustomFieldRef\"> <platformCore:value>2017-07-17T15:14:00.000-07:00</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"1671\" scriptId=\"custentity_v_locale\" xsi:type=\"platformCore:SelectCustomFieldRef\"> <platformCore:value internalId=\"13\" typeId=\"299\"> <platformCore:name>English - Canada</platformCore:name> </platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"3257\" scriptId=\"custentity_v_marketo_no_sync\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"3215\" scriptId=\"custentity_v_marketo_send_status\" xsi:type=\"platformCore:StringCustomFieldRef\"> <platformCore:value>created</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"2248\" scriptId=\"custentity_v_netsuite_1_campaigns\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"3144\" scriptId=\"custentity_v_omit_statements\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"2264\" scriptId=\"custentity_v_payment_notification\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"600\" scriptId=\"custentity_v_region_class\" xsi:type=\"platformCore:SelectCustomFieldRef\"> <platformCore:value internalId=\"8\" typeId=\"-101\"> <platformCore:name>North America : US</platformCore:name> </platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"1668\" scriptId=\"custentity_v_require_invoice_submission\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"2874\" scriptId=\"custentity_v_teamgroup\" xsi:type=\"platformCore:SelectCustomFieldRef\"> <platformCore:value internalId=\"9\" typeId=\"410\"> <platformCore:name>Sales Group (US)</platformCore:name> </platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"2267\" scriptId=\"custentity_v_unsubscribe_mktg_email\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"2957\" scriptId=\"custentity_v_usemailmerge\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> <platformCore:customField internalId=\"2855\" scriptId=\"custentity_v_vat_exempt\" xsi:type=\"platformCore:BooleanCustomFieldRef\"> <platformCore:value>false</platformCore:value> </platformCore:customField> </listRel:customFieldList> </platformCore:record> </platformCore:recordList> </platformCore:searchResult> </searchResponse> </soapenv:Body> </soapenv:Envelope>"; // result will be an iterator over tuples containing the start and end indices for each match in the string let result = regex.captures_iter(string); for mat in result { println!("{:?}", mat); } }

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 Rust, please visit: https://docs.rs/regex/latest/regex/