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version 2.109.1

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Function std.string.strip

Strips both leading and trailing whitespace (as defined by isWhite) or as specified in the second argument.

auto strip(Range) (
  Range str
)
if (isSomeString!Range || isRandomAccessRange!Range && hasLength!Range && hasSlicing!Range && !isConvertibleToString!Range && isSomeChar!(ElementEncodingType!Range));

auto strip(Range, Char) (
  Range str,
  const(Char)[] chars
)
if ((isBidirectionalRange!Range && isSomeChar!(ElementEncodingType!Range) || isConvertibleToString!Range) && isSomeChar!Char);

auto strip(Range, Char) (
  Range str,
  const(Char)[] leftChars,
  const(Char)[] rightChars
)
if ((isBidirectionalRange!Range && isSomeChar!(ElementEncodingType!Range) || isConvertibleToString!Range) && isSomeChar!Char);

Parameters

NameDescription
str string or random access range of characters
chars string of characters to be stripped
leftChars string of leading characters to be stripped
rightChars string of trailing characters to be stripped

Returns

slice of str stripped of leading and trailing whitespace or characters as specified in the second argument.

See Also

Generic stripping on ranges: strip

Example

import std.uni : lineSep, paraSep;
assert(strip("     hello world     ") ==
       "hello world");
assert(strip("\n\t\v\rhello world\n\t\v\r") ==
       "hello world");
assert(strip("hello world") ==
       "hello world");
assert(strip([lineSep] ~ "hello world" ~ [lineSep]) ==
       "hello world");
assert(strip([paraSep] ~ "hello world" ~ [paraSep]) ==
       "hello world");

Example

assert(strip("     hello world     ", "x") ==
       "     hello world     ");
assert(strip("     hello world     ", " ") ==
       "hello world");
assert(strip("   xyxyhello worldxyxy     ", "xy ") ==
       "hello world");
writeln(strip("\u2020hello\u2020"w, "\u2020"w)); // "hello"w
writeln(strip("\U00010001hello\U00010001"d, "\U00010001"d)); // "hello"d
writeln(strip(" hello ", "")); // " hello "

Example

writeln(strip("xxhelloyy", "x", "y")); // "hello"
assert(strip("   xyxyhello worldxyxyzz    ", "xy ", "xyz ") ==
       "hello world");
writeln(strip("\u2020hello\u2028"w, "\u2020"w, "\u2028"w)); // "hello"w
assert(strip("\U00010001hello\U00010002"d, "\U00010001"d, "\U00010002"d) ==
       "hello"d);
writeln(strip(" hello ", "", "")); // " hello "

Authors

Walter Bright, Andrei Alexandrescu, Jonathan M Davis, and David L. 'SpottedTiger' Davis

License

Boost License 1.0.