Its my 2nd day into D, I am already in deep love (:D), and I
would like to understand whether this is normal behavior or
something went terribly wrong, so all help is greatly appreciated.
Following the book of The D Programming language I have the code
below:
bool binarySearch(T)(T[] input, T value) {
while (!input.empty) {
auto i = input.length / 2;
auto mid = input[i];
if (mid > value) input = input[0 .. i];
else if (mid < value) input = input[i + 1 .. $];
else return true;
}
return false;
}
@safe nothrow unittest {
assert(binarySearch([ 1, 3, 6, 7, 9, 15 ], 6));
assert(binarySearch([ 1, 3, 6, 7, 9, 15 ], 5));
}
void main() {
bool s1 = binarySearch([1, 3, 6, 7, 9, 15], 6);
bool s2 = binarySearch!(int)([1, 3, 6, 7, 9, 15], 5);
writeln(s1, s2);
}
Then I compile using the command
$ dmd source/app.d -unittest
and execute as follows
$ ./app
Then the output
core.exception.AssertError@source/app.d(62): unittest failure
----------------
4 app 0x000000010b18d1d0
_d_unittest + 152
5 app 0x000000010b183d1e void
app.__unittest_fail(int) + 38
6 app 0x000000010b183df4
nothrow @safe void app.__unittestL60_1() + 184
7 app 0x000000010b183ca0 void
app.__modtest() + 8
8 app 0x000000010b18db54 int
core.runtime.runModuleUnitTests().__foreachbody2(object.ModuleInfo*) + 44
9 app 0x000000010b186656 int
object.ModuleInfo.opApply(scope int
delegate(object.ModuleInfo*)).__lambda2(immutable(object.ModuleInfo*)) + 34
10 app 0x000000010b1a4471 int
rt.minfo.moduleinfos_apply(scope int
delegate(immutable(object.ModuleInfo*))).__foreachbody2(ref
rt.sections_osx_x86_64.SectionGroup) + 85
11 app 0x000000010b1a43fc int
rt.minfo.moduleinfos_apply(scope int
delegate(immutable(object.ModuleInfo*))) + 32
12 app 0x000000010b18662d int
object.ModuleInfo.opApply(scope int delegate(object.ModuleInfo*))
+ 33
13 app 0x000000010b18da3e
runModuleUnitTests + 126
14 app 0x000000010b19e312 void
rt.dmain2._d_run_main(int, char**, extern (C) int
function(char[][])*).runAll() + 22
15 app 0x000000010b19e2ab void
rt.dmain2._d_run_main(int, char**, extern (C) int
function(char[][])*).tryExec(scope void delegate()) + 31
16 app 0x000000010b19e21e
_d_run_main + 458
17 app 0x000000010b183d37 main +
15
18 libdyld.dylib 0x00007fff95f2d254 start
+ 0
19 ??? 0x0000000000000000 0x0 + 0
The compiles is
DMD64 D Compiler v2.073.1
Copyright (c) 1999-2016 by Digital Mars written by Walter Bright
and I am executing this on OSX 10.12
