The OpenD Programming Language

hasAssignableElements

std range primitives

Returns true if R is an input range and has mutable elements. The following code should compile for any range with assignable elements.

R r;
static assert(isInputRange!R);
r.front = r.front;
static if (isBidirectionalRange!R) r.back = r.front;
static if (isRandomAccessRange!R) r[0] = r.front;
  1. import std.traits;
  2. enum bool isInputRange(R, E);

Examples

static assert(!hasAssignableElements!(const int[]));
static assert(!hasAssignableElements!(const(int)[]));
static assert( hasAssignableElements!(int[]));
static assert(!hasAssignableElements!(inout(int)[]));

static assert(!hasAssignableElements!( string));
static assert(!hasAssignableElements!(dstring));
static assert(!hasAssignableElements!( char[]));
static assert( hasAssignableElements!(dchar[]));

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std range primitives functionsmanifest constantspropertiestemplatesvariables
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