String

Functions for ASCII strings:

List of functions

  • String::Base64Encode(String{Flags:AutoMap}) -> String
  • String::Base64Decode(String) -> String?
  • String::Base64StrictDecode(String) -> String?
  • String::EscapeC(String{Flags:AutoMap}) -> String
  • String::UnescapeC(String{Flags:AutoMap}) -> String
  • String::HexEncode(String{Flags:AutoMap}) -> String
  • String::HexDecode(String) -> String?
  • String::EncodeHtml(String{Flags:AutoMap}) -> String
  • String::DecodeHtml(String{Flags:AutoMap}) -> String
  • String::CgiEscape(String{Flags:AutoMap}) -> String
  • String::CgiUnescape(String{Flags:AutoMap}) -> String
  • String::Strip(String{Flags:AutoMap}) -> String
  • String::Collapse(String{Flags:AutoMap}) -> String
  • String::CollapseText(String{Flags:AutoMap}, Uint64) -> String
  • String::Contains(String?, String) -> Bool
  • String::Find(String{Flags:AutoMap}, String, [Uint64?]) -> Int64: Returns the first position found or -1. The optional argument is the offset from the beginning of the string.
  • String::ReverseFind(String{Flags:AutoMap}, String, [Uint64?]) -> Int64: Returns the last position found or -1. The optional argument is the offset from the beginning of the string.
  • String::HasPrefix(String?, String) -> Bool
  • String::HasPrefixIgnoreCase(String?, String) -> Bool
  • String::StartsWith(String?, String) -> Bool
  • String::StartsWithIgnoreCase(String?, String) -> Bool
  • String::HasSuffix(String?, String) -> Bool
  • String::HasSuffixIgnoreCase(String?, String) -> Bool
  • String::EndsWith(String?, String) -> Bool
  • String::EndsWithIgnoreCase(String?, String) -> Bool
  • String::Substring(String{Flags:AutoMap}, [Uint64?, Uint64?]) -> String
  • String::AsciiToLower(String{Flags:AutoMap}) -> String: Changes only Latin characters. For working with other alphabets, see Unicode::ToLower
  • String::AsciiToUpper(String{Flags:AutoMap}) -> String: Changes only Latin characters. For working with other alphabets, see Unicode::ToUpper
  • String::AsciiToTitle(String{Flags:AutoMap}) -> String: Changes only Latin characters. For working with other alphabets, see Unicode::ToTitle

  • String::SplitToList( String?, String, [ DelimeterString:Bool?, SkipEmpty:Bool?, Limit:Uint64? ]) -> List<String> The first argument is the source string The second argument is a delimiter The third argument includes the following parameters:

  • DelimeterString:Bool? — treating a delimiter as a string (true, by default) or a set of characters “any of” (false)

  • SkipEmpty:Bool? — whether to skip empty strings in the result, is false by default
  • Limit:Uint64? — Limits the number of fetched components (unlimited by default); if the limit is exceeded, the raw suffix of the source string is returned in the last item
  • String::JoinFromList(List<String>{Flags:AutoMap}, String) -> String
  • String::ToByteList(List<String>{Flags:AutoMap}) -> List<Byte>
  • String::FromByteList(List<Uint8>) -> String
  • String::ReplaceAll(String{Flags:AutoMap}, String, String) -> String: Arguments: input, find, replacement
  • String::ReplaceFirst(String{Flags:AutoMap}, String, String) -> String: Arguments: input, find, replacement
  • String::ReplaceLast(String{Flags:AutoMap}, String, String) -> String: Arguments: input, find, replacement
  • String::RemoveAll(String{Flags:AutoMap}, String) -> String: The second argument is interpreted as an unordered set of characters to delete
  • String::RemoveFirst(String{Flags:AutoMap}, String) -> String: An unordered set of characters in the second argument, only the first encountered character from set is deleted
  • String::RemoveLast(String{Flags:AutoMap}, String) -> String: An unordered set of characters in the second argument, only the last encountered character from the set is deleted
  • String::IsAscii(String{Flags:AutoMap}) -> Bool
  • String::IsAsciiSpace(String{Flags:AutoMap}) -> Bool
  • String::IsAsciiUpper(String{Flags:AutoMap}) -> Bool
  • String::IsAsciiLower(String{Flags:AutoMap}) -> Bool
  • String::IsAsciiAlpha(String{Flags:AutoMap}) -> Bool
  • String::IsAsciiAlnum(String{Flags:AutoMap}) -> Bool
  • String::IsAsciiHex(String{Flags:AutoMap}) -> Bool
  • String::LevensteinDistance(String{Flags:AutoMap}, String{Flags:AutoMap}) -> Uint64
  • String::LeftPad(String{Flags:AutoMap}, Uint64, [String?]) -> String
  • String::RightPad(String{Flags:AutoMap}, Uint64) -> String
  • String::Hex(Uint64{Flags:AutoMap}) -> String
  • String::SHex(Int64{Flags:AutoMap}) -> String
  • String::Bin(Uint64{Flags:AutoMap}) -> String
  • String::SBin(Int64{Flags:AutoMap}) -> String
  • String::HexText(String{Flags:AutoMap}) -> String
  • String::BinText(String{Flags:AutoMap}) -> String
  • String::HumanReadableDuration(Uint64{Flags:AutoMap}) -> String
  • String::HumanReadableQuantity(Uint64{Flags:AutoMap}) -> String
  • String::HumanReadableBytes(Uint64{Flags:AutoMap}) -> String
  • String::Prec(Double{Flags:AutoMap}, Uint64) -> String*
  • String::Reverse(String?) -> String?

Alert

The functions from the String library don’t support Cyrillic and can only work with ASCII characters. To work with UTF-8 encoded strings, use functions from Unicode.

Examples

1. SELECT String::Base64Encode("YQL"); -- "WVFM"
2. SELECT String::Strip("YQL ");       -- "YQL"
3. SELECT String::SplitToList("1,2,3,4,5,6,7", ",", 3 as Limit); -- ["1", "2", "3", "4,5,6,7"]

String - 图1