Menu
Search

API Documentation

version 2.084.0

overview

View source code
Display the source code in std/exception.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.

Enum std.exception.RangePrimitive

This enum is used to select the primitives of the range to handle by the handle range wrapper. The values of the enum can be OR'd to select multiple primitives to be handled.

enum RangePrimitive : int { ... }

RangePrimitive.access is a shortcut for the access primitives; front, back and opIndex.

RangePrimitive.pop is a shortcut for the mutating primitives; popFront and popBack.

Enum members

NameDescription
access
back
empty
front
length
opDollar
opIndex
opSlice
pop
popBack
popFront
save

Example

import std.algorithm.comparison : equal;
import std.algorithm.iteration : map, splitter;
import std.conv : to, ConvException;

auto s = "12,1337z32,54,2,7,9,1z,6,8";

// The next line composition will throw when iterated
// as some elements of the input do not convert to integer
auto r = s.splitter(',').map!(a => to!int(a));

// Substitute 0 for cases of ConvException
auto h = r.handle!(ConvException, RangePrimitive.front, (e, r) => 0);
assert(h.equal([12, 0, 54, 2, 7, 9, 0, 6, 8]));

Example

import std.algorithm.comparison : equal;
import std.range : retro;
import std.utf : UTFException;

auto str = "hello\xFFworld"; // 0xFF is an invalid UTF-8 code unit

auto handled = str.handle!(UTFException, RangePrimitive.access,
        (e, r) => ' '); // Replace invalid code points with spaces

assert(handled.equal("hello world")); // `front` is handled,
assert(handled.retro.equal("dlrow olleh")); // as well as `back`

Authors

Andrei Alexandrescu and Jonathan M Davis

License

Boost License 1.0