<a href="http://www.boost.org/LICENSE_1_0.txt">Boost License 1.0</a>. Authors: $(WEB digitalmars.com, Walter Bright), Don Clugston Source: $(PHOBOSSRC std/_metastrings.d) */
template Format(A...) { static if (A.length == 0) enum Format = ""; else static if (is(typeof(A[0]) : const(char)[])) enum Format = FormatString!(A[0], A[1..$]); else enum Format = toStringNow!(A[0]) ~ Format!(A[1..$]);
} template FormatString(const(char)[] F, A...) { static if (F.length == 0) enum FormatString = Format!(A); else static if (F.length == 1) enum FormatString = F[0] ~ Format!(A); else static if (F[0..2] == "%s") enum FormatString = toStringNow!(A[0])
~ FormatString!(F[2..$],A[1..$]); else static if (F[0..2] == "%%") enum FormatString = "%" ~ FormatString!(F[2..$],A); else { static assert(F[0] != '%', "unrecognized format %" ~ F[1]); enum FormatString = F[0] ~ FormatString!(F[1..$],A);
} } unittest { auto s = Format!("hel%slo", "world", -138, 'c', true); assert(s == "helworldlo-138ctrue", "[" ~ s ~ "]"); } template toStringNow(ulong v) { static if (v
< 10) enum toStringNow=""
~ cast(char)(v + '0'); else enum toStringNow=t oStringNow!(v / 10) ~ toStringNow!(v % 10); } unittest { static assert(toStringNow!(1uL << 62)=="4611686018427387904" ); }
~ toStringNow!(cast(ulong) -v); else enum toStringNow=t oStringNow!(cast(ulong) v); } unittest { static assert(toStringNow!(0x100000000)=="4294967296" ); static assert(toStringNow!(-138L)=="-138" ); }
{ enum toStringNow=t oStringNow!(cast(ulong)U); }
S) { enum toStringNow=S ; }
following the integer literal * Otherwise: * .value=n ull, * .rest=s */ template parseUinteger(const(char)[] s) { static if (s.length==0 ) { enum value="" ; enum rest="" ; } else static if (s[0]>= '0' && s[0]
<='9' ) { enum value=s [0] ~ parseUinteger!(s[1..$]).value; enum rest=p arseUinteger!(s[1..$]).rest; } else { enum value="" ; enum rest=s ; } }
template parseInteger(const(char)[] s) { static if (s.length==0 ) { enum value="" ; enum
rest="" ; } else static if (s[0]>= '0' && s[0]
<='9' ) { enum value=s [0] ~ parseUinteger!(s[1..$]).value; enum rest=p arseUinteger!(s[1..$]).rest; } else static if (s.length>= 2 && s[0] == '-' && s[1] >= '0' && s[1]
<='9' ) { enum value=s [0..2] ~ parseUinteger!(s[2..$]).value; enum rest=p arseUinteger!(s[2..$]).rest; } else { enum value="" ; enum rest=s ; } } unittest { assert(parseUinteger!(
"1234abc").value=="1234" ); assert(parseUinteger!( "1234abc").rest=="abc" ); assert(parseInteger!( "-1234abc").value=="-1234" ); assert(parseInteger!( "-1234abc").rest=="abc" ); }
deprecated alias toStringNow ToString;