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view runtime/internal/util/string.d @ 1418:f5f8c21ce6ef
Make "`aa[key]`" use the same runtime call as "`key in aa`". The runtime calls
these were using were different, but with equivalent definitions.
With `ldc -O3`, the following functions now all compile to the exact same code:
{{{
int[int] y;
void foo(int x) {
if (x in y) {
auto z = x in y;
sink(*z);
}
}
void bar(int x) {
if (x in y) {
sink(y[x]);
}
}
void baz(int x) {
if (auto p = x in y) {
sink(*p);
}
}
}}}
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Mon, 25 May 2009 12:50:40 +0200 |
parents | 4b2b2cd865e3 |
children |
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line source
/******************************************************************************* copyright: Copyright (c) 2004 Tango group. All rights reserved license: BSD style: $(LICENSE) version: Initial release: July 2006 Various char[] utilities *******************************************************************************/ module util.string; private import tango.stdc.string; // convert uint to char[], within the given buffer // Returns a valid slice of the populated buffer char[] intToUtf8 (char[] tmp, size_t val) in { assert (tmp.length >= 20, "atoi buffer should be 20 or more chars wide"); } body { char* p = tmp.ptr + tmp.length; do { *--p = cast(char)((val % 10) + '0'); } while (val /= 10); return tmp [cast(size_t)(p - tmp.ptr) .. $]; } // function to compare two strings int stringCompare (char[] s1, char[] s2) { auto len = s1.length; if (s2.length < len) len = s2.length; int result = memcmp(s1.ptr, s2.ptr, len); if (result == 0) result = cast(int)s1.length - cast(int)s2.length; return result; }