View source code
Display the source code in std/range/package.d from which this
page was generated on github.
Report a bug
If you spot a problem with this page, click here to create a
Bugzilla issue.
Improve this page
Quickly fork, edit online, and submit a pull request for this page.
Requires a signed-in GitHub account. This works well for small changes.
If you'd like to make larger changes you may want to consider using
local clone.
Function std.range.drop
Convenience function which calls
popFrontN
(range, n)
and returns range
.
drop
makes it easier to pop elements from a range
and then pass it to another function within a single expression,
whereas popFrontN
would require multiple statements.
R drop(R)
(
R range,
size_t n
)
if (isInputRange!R);
dropBack
provides the same functionality but instead calls
popBackN
(range, n)
Note
drop
and dropBack
will only pop up to
n
elements but will stop if the range is empty first.
In other languages this is sometimes called skip
.
Parameters
Name | Description |
---|---|
range | the input range to drop from |
n | the number of elements to drop |
Returns
See Also
Example
import std .algorithm .comparison : equal;
writeln([0, 2, 1, 5, 0, 3] .drop(3)); // [5, 0, 3]
writeln("hello world" .drop(6)); // "world"
assert("hello world" .drop(50) .empty);
assert("hello world" .take(6) .drop(3) .equal("lo "));
Example
import std .algorithm .comparison : equal;
writeln([0, 2, 1, 5, 0, 3] .dropBack(3)); // [0, 2, 1]
writeln("hello world" .dropBack(6)); // "hello"
assert("hello world" .dropBack(50) .empty);
assert("hello world" .drop(4) .dropBack(4) .equal("o w"));
Authors
Andrei Alexandrescu, David Simcha, Jonathan M Davis, and Jack Stouffer. Credit for some of the ideas in building this module goes to Leonardo Maffi.
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.