setMemberByName

Given a struct/class object, sets one of its members by its string name to a specified value. Overload that takes a value of the same type as the target member, rather than a string to convert. Integer promotion applies.

It does not currently recurse into other struct/class members.

auto setMemberByName(Thing thing, string memberToSet, string valueToSet)
auto setMemberByName(Thing thing, string memberToSet, Val valueToSet)
auto
setMemberByName
(
Thing
Val
)
(
ref Thing thing
,
const string memberToSet
,
Val valueToSet
)
if (
isAggregateType!Thing &&
isMutable!Thing
&&
!is(Val : string)
)

Parameters

thing Thing: Reference object whose members to set.
memberToSet string: String name of the thing's member to set.
valueToSet Val: Value, of the same type as the target member.

Return Value

Type: auto

true if a member was found and set, false if not.

Throws

SetMemberException if the passed valueToSet was not the same type (or implicitly convertible to) the member to set.

Examples

struct Foo
{
    int i;
    double d;
}

Foo foo;

foo.setMemberByName("i", 42);
foo.setMemberByName("d", 3.14);

assert(foo.i == 42);
assert(foo.d = 3.14);

import std.conv : to;
import std.exception : assertThrown;

struct Foo
{
    string s;
    int i;
    bool b;
    const double d;
}

Foo foo;

bool success;

success = foo.setMemberByName("s", "harbl");
assert(success);
assert((foo.s == "harbl"), foo.s);

success = foo.setMemberByName("i", 42);
assert(success);
assert((foo.i == 42), foo.i.to!string);

success = foo.setMemberByName("b", true);
assert(success);
assert(foo.b);

success = foo.setMemberByName("d", 3.14);
assert(!success);

assertThrown!SetMemberException(foo.setMemberByName("b", 3.14));

setMemberByName

Parameters

Return Value

Throws

Examples

Meta

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