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.
commonPrefix
fn
auto commonPrefix(alias pred = "a == b", R1, R2)(R1 r1, R2 r2) if (isForwardRange!R1 && isInputRange!R2 &&
!isNarrowString!R1 &&
is(typeof(binaryFun!pred(r1.front, r2.front))))Returns the common prefix of two ranges.
Parameters
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
See Also
fn
auto commonPrefix(alias pred, R1, R2)(R1 r1, R2 r2) if (isNarrowString!R1 && isInputRange!R2 &&
is(typeof(binaryFun!pred(r1.front, r2.front))))ditto
fn
auto commonPrefix(R1, R2)(R1 r1, R2 r2) if (isNarrowString!R1 && isInputRange!R2 && !isNarrowString!R2 &&
is(typeof(r1.front == r2.front)))ditto
fn
auto commonPrefix(R1, R2)(R1 r1, R2 r2) if (isNarrowString!R1 && isNarrowString!R2)ditto