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Function std.algorithm.searching.commonPrefix
Returns the common prefix of two ranges.
auto auto commonPrefix(alias pred, R1, R2)
(
R1 r1,
R2 r2
)
if (isForwardRange!R1 && isInputRange!R2 && !isNarrowString!R1 && is(typeof(binaryFun!pred(r1
auto auto commonPrefix(alias pred, R1, R2)
(
R1 r1,
R2 r2
)
if (isNarrowString!R1 && isInputRange!R2 && is(typeof(binaryFun!pred(r1
auto auto commonPrefix(R1, R2)
(
R1 r1,
R2 r2
)
if (isNarrowString!R1 && isInputRange!R2 && !isNarrowString!R2 && is(typeof(r1
auto auto commonPrefix(R1, R2)
(
R1 r1,
R2 r2
)
if (isNarrowString!R1 && isNarrowString!R2);
Parameters
| Name | Description |
|---|---|
| pred | The predicate to use in comparing elements for commonality. Defaults
to equality "a == b".
|
| r1 | A forward range of elements. |
| r2 | An input range of elements. |
Returns
A slice of r1 which contains the characters that both ranges start with,
if the first argument is a string; otherwise, the same as the result of
takeExactly(r1, n), where n is the number of elements in the common
prefix of both ranges.
See Also
std
Example
writeln(commonPrefix("hello, world", "hello, there")); // "hello, "
Authors
License
Copyright © 1999-2018 by the D Language Foundation | Page generated by ddox.