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274 lines
6.2 KiB
HTML
274 lines
6.2 KiB
HTML
<!doctype html>
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<title>CodeMirror: D mode</title>
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<meta charset="utf-8"/>
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<link rel=stylesheet href="../../doc/docs.css">
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<link rel="stylesheet" href="../../lib/codemirror.css">
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<script src="../../lib/codemirror.js"></script>
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<script src="../../addon/edit/matchbrackets.js"></script>
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<script src="d.js"></script>
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<style>.CodeMirror {border: 2px inset #dee;}</style>
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<div id=nav>
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<a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
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<ul>
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<li><a href="../../index.html">Home</a>
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<li><a href="../../doc/manual.html">Manual</a>
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<li><a href="https://github.com/codemirror/codemirror">Code</a>
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</ul>
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<ul>
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<li><a href="../index.html">Language modes</a>
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<li><a class=active href="#">D</a>
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</ul>
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</div>
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<article>
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<h2>D mode</h2>
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<form><textarea id="code" name="code">
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/* D demo code // copied from phobos/sd/metastrings.d */
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// Written in the D programming language.
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/**
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Templates with which to do compile-time manipulation of strings.
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Macros:
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WIKI = Phobos/StdMetastrings
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Copyright: Copyright Digital Mars 2007 - 2009.
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License: <a href="http://www.boost.org/LICENSE_1_0.txt">Boost License 1.0</a>.
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Authors: $(WEB digitalmars.com, Walter Bright),
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Don Clugston
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Source: $(PHOBOSSRC std/_metastrings.d)
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*/
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/*
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Copyright Digital Mars 2007 - 2009.
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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*/
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module std.metastrings;
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/**
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Formats constants into a string at compile time. Analogous to $(XREF
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string,format).
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Parameters:
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A = tuple of constants, which can be strings, characters, or integral
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values.
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Formats:
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* The formats supported are %s for strings, and %%
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* for the % character.
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Example:
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---
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import std.metastrings;
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import std.stdio;
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void main()
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{
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string s = Format!("Arg %s = %s", "foo", 27);
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writefln(s); // "Arg foo = 27"
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}
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* ---
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*/
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template Format(A...)
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{
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static if (A.length == 0)
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enum Format = "";
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else static if (is(typeof(A[0]) : const(char)[]))
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enum Format = FormatString!(A[0], A[1..$]);
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else
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enum Format = toStringNow!(A[0]) ~ Format!(A[1..$]);
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}
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template FormatString(const(char)[] F, A...)
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{
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static if (F.length == 0)
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enum FormatString = Format!(A);
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else static if (F.length == 1)
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enum FormatString = F[0] ~ Format!(A);
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else static if (F[0..2] == "%s")
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enum FormatString
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= toStringNow!(A[0]) ~ FormatString!(F[2..$],A[1..$]);
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else static if (F[0..2] == "%%")
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enum FormatString = "%" ~ FormatString!(F[2..$],A);
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else
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{
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static assert(F[0] != '%', "unrecognized format %" ~ F[1]);
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enum FormatString = F[0] ~ FormatString!(F[1..$],A);
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}
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}
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unittest
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{
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auto s = Format!("hel%slo", "world", -138, 'c', true);
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assert(s == "helworldlo-138ctrue", "[" ~ s ~ "]");
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}
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/**
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* Convert constant argument to a string.
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*/
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template toStringNow(ulong v)
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{
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static if (v < 10)
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enum toStringNow = "" ~ cast(char)(v + '0');
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else
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enum toStringNow = toStringNow!(v / 10) ~ toStringNow!(v % 10);
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}
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unittest
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{
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static assert(toStringNow!(1uL << 62) == "4611686018427387904");
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}
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/// ditto
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template toStringNow(long v)
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{
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static if (v < 0)
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enum toStringNow = "-" ~ toStringNow!(cast(ulong) -v);
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else
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enum toStringNow = toStringNow!(cast(ulong) v);
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}
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unittest
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{
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static assert(toStringNow!(0x100000000) == "4294967296");
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static assert(toStringNow!(-138L) == "-138");
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}
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/// ditto
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template toStringNow(uint U)
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{
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enum toStringNow = toStringNow!(cast(ulong)U);
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}
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/// ditto
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template toStringNow(int I)
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{
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enum toStringNow = toStringNow!(cast(long)I);
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}
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/// ditto
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template toStringNow(bool B)
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{
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enum toStringNow = B ? "true" : "false";
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}
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/// ditto
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template toStringNow(string S)
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{
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enum toStringNow = S;
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}
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/// ditto
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template toStringNow(char C)
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{
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enum toStringNow = "" ~ C;
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}
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/********
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* Parse unsigned integer literal from the start of string s.
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* returns:
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* .value = the integer literal as a string,
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* .rest = the string following the integer literal
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* Otherwise:
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* .value = null,
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* .rest = s
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*/
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template parseUinteger(const(char)[] s)
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{
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static if (s.length == 0)
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{
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enum value = "";
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enum rest = "";
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}
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else static if (s[0] >= '0' && s[0] <= '9')
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{
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enum value = s[0] ~ parseUinteger!(s[1..$]).value;
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enum rest = parseUinteger!(s[1..$]).rest;
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}
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else
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{
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enum value = "";
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enum rest = s;
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}
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}
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/********
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Parse integer literal optionally preceded by $(D '-') from the start
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of string $(D s).
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Returns:
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.value = the integer literal as a string,
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.rest = the string following the integer literal
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Otherwise:
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.value = null,
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.rest = s
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*/
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template parseInteger(const(char)[] s)
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{
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static if (s.length == 0)
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{
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enum value = "";
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enum rest = "";
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}
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else static if (s[0] >= '0' && s[0] <= '9')
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{
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enum value = s[0] ~ parseUinteger!(s[1..$]).value;
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enum rest = parseUinteger!(s[1..$]).rest;
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}
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else static if (s.length >= 2 &&
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s[0] == '-' && s[1] >= '0' && s[1] <= '9')
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{
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enum value = s[0..2] ~ parseUinteger!(s[2..$]).value;
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enum rest = parseUinteger!(s[2..$]).rest;
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}
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else
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{
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enum value = "";
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enum rest = s;
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}
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}
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unittest
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{
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assert(parseUinteger!("1234abc").value == "1234");
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assert(parseUinteger!("1234abc").rest == "abc");
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assert(parseInteger!("-1234abc").value == "-1234");
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assert(parseInteger!("-1234abc").rest == "abc");
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}
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/**
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Deprecated aliases held for backward compatibility.
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*/
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deprecated alias toStringNow ToString;
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/// Ditto
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deprecated alias parseUinteger ParseUinteger;
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/// Ditto
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deprecated alias parseUinteger ParseInteger;
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</textarea></form>
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<script>
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var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
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lineNumbers: true,
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matchBrackets: true,
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indentUnit: 4,
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mode: "text/x-d"
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});
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</script>
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<p>Simple mode that handle D-Syntax (<a href="http://www.dlang.org">DLang Homepage</a>).</p>
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<p><strong>MIME types defined:</strong> <code>text/x-d</code>
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.</p>
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</article>
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