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version 2.108.0

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Function std.algorithm.comparison.min

Iterates the passed arguments and returns the minimum value.

auto min(T...) (
  T args
)
if (T.length >= 2 && !is(CommonType!T == void));

T min(T, U) (
  T a,
  U b
)
if (is(T == U) && is(typeof(a < b)));

Parameters

NameDescription
args The values to select the minimum from. At least two arguments must be passed, and they must be comparable with <.

Returns

The minimum of the passed-in values. The type of the returned value is the type among the passed arguments that is able to store the smallest value. If at least one of the arguments is NaN, the result is an unspecified value. See minElement for examples on how to cope with NaNs.

See Also

minElement

Example

int a = 5;
short b = 6;
double c = 2;
auto d = min(a, b);
static assert(is(typeof(d) == int));
writeln(d); // 5
auto e = min(a, b, c);
static assert(is(typeof(e) == double));
writeln(e); // 2
ulong f = 0xffff_ffff_ffff;
const uint g = min(f, 0xffff_0000);
writeln(g); // 0xffff_0000
dchar h = 100;
uint i = 101;
static assert(is(typeof(min(h, i)) == dchar));
static assert(is(typeof(min(i, h)) == uint));
writeln(min(h, i)); // 100

Example

With arguments of mixed signedness, the return type is the one that can store the lowest values. 

int a = -10;
uint f = 10;
static assert(is(typeof(min(a, f)) == int));
writeln(min(a, f)); // -10

Example

User-defined types that support comparison with < are supported. 

import std.datetime;
writeln(min(Date(2012, 12, 21), Date(1982, 1, 4))); // Date(1982, 1, 4)
writeln(min(Date(1982, 1, 4), Date(2012, 12, 21))); // Date(1982, 1, 4)
writeln(min(Date(1982, 1, 4), Date.min)); // Date.min
writeln(min(Date.min, Date(1982, 1, 4))); // Date.min
writeln(min(Date(1982, 1, 4), Date.max)); // Date(1982, 1, 4)
writeln(min(Date.max, Date(1982, 1, 4))); // Date(1982, 1, 4)
writeln(min(Date.min, Date.max)); // Date.min
writeln(min(Date.max, Date.min)); // Date.min

Authors

Andrei Alexandrescu

License

Boost License 1.0.