ifModifiedSince property Null safety
read / write
The date and time specified by the ifModifiedSinceHeader header, if any.
Implementation
DateTime? ifModifiedSince
- Dart
- dart:io
- HttpHeaders
- ifModifiedSince property
HttpHeaders class
- Constructors
- HttpHeaders
- Properties
- chunkedTransferEncoding
- contentLength
- contentType
- date
- expires
- hashCode
- host
- ifModifiedSince
- persistentConnection
- port
- runtimeType
- Methods
- add
- clear
- forEach
- noFolding
- noSuchMethod
- remove
- removeAll
- set
- toString
- value
- Operators
- operator ==
- operator []
- Constants
- ACCEPT
- ACCEPT_CHARSET
- ACCEPT_ENCODING
- ACCEPT_LANGUAGE
- ACCEPT_RANGES
- acceptCharsetHeader
- acceptEncodingHeader
- acceptHeader
- acceptLanguageHeader
- acceptRangesHeader
- AGE
- ageHeader
- ALLOW
- allowHeader
- AUTHORIZATION
- authorizationHeader
- CACHE_CONTROL
- cacheControlHeader
- CONNECTION
- connectionHeader
- CONTENT_ENCODING
- CONTENT_LANGUAGE
- CONTENT_LENGTH
- CONTENT_LOCATION
- CONTENT_MD5
- CONTENT_RANGE
- CONTENT_TYPE
- contentEncodingHeader
- contentLanguageHeader
- contentLengthHeader
- contentLocationHeader
- contentMD5Header
- contentRangeHeader
- contentTypeHeader
- COOKIE
- cookieHeader
- DATE
- dateHeader
- ENTITY_HEADERS
- entityHeaders
- ETAG
- etagHeader
- EXPECT
- expectHeader
- EXPIRES
- expiresHeader
- FROM
- fromHeader
- GENERAL_HEADERS
- generalHeaders
- HOST
- hostHeader
- IF_MATCH
- IF_MODIFIED_SINCE
- IF_NONE_MATCH
- IF_RANGE
- IF_UNMODIFIED_SINCE
- ifMatchHeader
- ifModifiedSinceHeader
- ifNoneMatchHeader
- ifRangeHeader
- ifUnmodifiedSinceHeader
- LAST_MODIFIED
- lastModifiedHeader
- LOCATION
- locationHeader
- MAX_FORWARDS
- maxForwardsHeader
- PRAGMA
- pragmaHeader
- PROXY_AUTHENTICATE
- PROXY_AUTHORIZATION
- proxyAuthenticateHeader
- proxyAuthorizationHeader
- RANGE
- rangeHeader
- REFERER
- refererHeader
- REQUEST_HEADERS
- requestHeaders
- RESPONSE_HEADERS
- responseHeaders
- RETRY_AFTER
- retryAfterHeader
- SERVER
- serverHeader
- SET_COOKIE
- setCookieHeader
- TE
- teHeader
- TRAILER
- trailerHeader
- TRANSFER_ENCODING
- transferEncodingHeader
- UPGRADE
- upgradeHeader
- USER_AGENT
- userAgentHeader
- VARY
- varyHeader
- VIA
- viaHeader
- WARNING
- warningHeader
- WWW_AUTHENTICATE
- wwwAuthenticateHeader