Replaced some incorrect 'in' uses with 'const'.

cdc.d

@@ -484,7 +484,7 @@ struct CompileOptions
          * Params:  options = Compiler command line options.
          *          sources = Source files to compile.
          */
-        this(string[] options, in string[] sources)
+        this(string[] options, const string[] sources)
         {   
             foreach(i, opt; options)
             {
@@ -530,7 +530,7 @@ struct CompileOptions
          *
          * Returns: Translated options.
          */
-        string[] get_options(in string compiler)
+        string[] get_options(const string compiler)
         {    
             string[] result = options_.dup;
 
@@ -593,7 +593,7 @@ struct CompileOptions
 ///Thrown at errors in execution of other processes (e.g. compiler commands).
 class CompileException : Exception 
 {
-    this(in string message, in string file, in size_t line){super(message, file, line);}
+    this(const string message, const string file, in size_t line){super(message, file, line);}
 };
 
 /**
@@ -602,7 +602,7 @@ class CompileException : Exception
  * Params:  compiler  = Compiler to execute.
  *          arguments = Compiler arguments.
  */
-void execute_compiler(in string compiler, string[] arguments)
+void execute_compiler(const string compiler, string[] arguments)
 {    
     try
     {
@@ -621,7 +621,7 @@ void execute_compiler(in string compiler, string[] arguments)
 }
 
 ///Thrown at errors in execution of other processes (e.g. compiler commands).
-class ProcessException : Exception {this(in string message){super(message);}};
+class ProcessException : Exception {this(const string message){super(message);}};
 
 /**
  * Execute a command-line program and print its output.
@@ -657,7 +657,7 @@ void execute(string command, string[] args)
  *
  * Bugs:    LDC fails to return any results. 
  */
-string[] scan(in string directory, string extensions ...)
+string[] scan(const string directory, string extensions ...)
 {    
     string[] result;
     foreach(string name; dirEntries(directory, SpanMode.depth))

dyaml/emitter.d

@@ -227,7 +227,7 @@ struct Emitter
         }
 
         ///Write a string to the file/stream.
-        void writeString(in string str) @system
+        void writeString(const string str) @system
         {
             try final switch(encoding_)
             {
@@ -759,7 +759,7 @@ struct Emitter
         }
 
         ///Process and write an anchor/alias.
-        void processAnchor(in string indicator) @trusted
+        void processAnchor(const string indicator) @trusted
         {
             if(event_.anchor.isNull())
             {
@@ -857,7 +857,7 @@ struct Emitter
         }
 
         ///Prepare YAML version string for output.
-        static string prepareVersion(in string YAMLVersion) @trusted
+        static string prepareVersion(const string YAMLVersion) @trusted
         {
             enforce(YAMLVersion.split(".")[0] == "1",
                     new Error("Unsupported YAML version: " ~ YAMLVersion));
@@ -877,7 +877,7 @@ struct Emitter
         }
 
         ///Prepare tag directive handle for output.
-        static string prepareTagHandle(in string handle) @trusted
+        static string prepareTagHandle(const string handle) @trusted
         {
             enforce(handle !is null && handle != "",
                     new Error("Tag handle must not be empty"));
@@ -892,7 +892,7 @@ struct Emitter
         }
 
         ///Prepare tag directive prefix for output.
-        static string prepareTagPrefix(in string prefix) @trusted
+        static string prepareTagPrefix(const string prefix) @trusted
         {
             enforce(prefix !is null && prefix != "",
                     new Error("Tag prefix must not be empty"));
@@ -1179,7 +1179,7 @@ struct Emitter
         void writeStreamEnd() @system {stream_.flush();}
 
         ///Write an indicator (e.g. ":", "[", ">", etc.).
-        void writeIndicator(in string indicator, in bool needWhitespace, 
+        void writeIndicator(const string indicator, in bool needWhitespace, 
                             in bool whitespace = false, in bool indentation = false) @system
         {
             const bool prefixSpace = !whitespace_ && needWhitespace;
@@ -1222,7 +1222,7 @@ struct Emitter
         }
 
         ///Start new line.
-        void writeLineBreak(in string data = null) @system
+        void writeLineBreak(const string data = null) @system
         {
             whitespace_ = indentation_ = true;
             ++line_;
@@ -1231,7 +1231,7 @@ struct Emitter
         }
 
         ///Write a YAML version directive.
-        void writeVersionDirective(in string versionText) @system
+        void writeVersionDirective(const string versionText) @system
         {
             writeString("%YAML ");
             writeString(versionText);
@@ -1239,7 +1239,7 @@ struct Emitter
         }
 
         ///Write a tag directive.
-        void writeTagDirective(in string handle, in string prefix) @system
+        void writeTagDirective(const string handle, const string prefix) @system
         {
             writeString("%TAG ");
             writeString(handle);
@@ -1571,7 +1571,7 @@ struct ScalarWriter
             size_t hintsIdx = 0;
             if(text_.length == 0){return hintsIdx;}
 
-            dchar lastChar(in string str, ref size_t end) 
+            dchar lastChar(const string str, ref size_t end) 
             {
                 size_t idx = end = end - strideBack(str, end);
                 return decode(text_, idx);

dyaml/node.d

@@ -226,7 +226,7 @@ struct Node
          *                  be in full form, e.g. "tag:yaml.org,2002:int", not 
          *                  a shortcut, like "!!int".            
          */
-        this(T)(T value, in string tag = null) @trusted
+        this(T)(T value, const string tag = null) @trusted
             if (isSomeString!T || (!isArray!T && !isAssociativeArray!T))
         {
             tag_ = Tag(tag);
@@ -283,7 +283,7 @@ struct Node
          * auto set = Node([1, 2, 3, 4, 5], "tag:yaml.org,2002:set");
          * --------------------
          */
-        this(T)(T[] array, in string tag = null) @safe
+        this(T)(T[] array, const string tag = null) @safe
             if (!isSomeString!(T[]))
         {
             tag_ = Tag(tag);
@@ -348,7 +348,7 @@ struct Node
          * auto pairs = Node([1 : "a", 2 : "b"], "tag:yaml.org,2002:pairs");
          * --------------------
          */
-        this(K, V)(V[K] array, in string tag = null) @safe
+        this(K, V)(V[K] array, const string tag = null) @safe
         {
             tag_ = Tag(tag);
 
@@ -413,7 +413,7 @@ struct Node
          * auto pairs = Node([1, 2], ["a", "b"], "tag:yaml.org,2002:pairs");
          * --------------------
          */
-        this(K, V)(K[] keys, V[] values, in string tag = null) @safe
+        this(K, V)(K[] keys, V[] values, const string tag = null) @safe
             if(!(isSomeString!(K[]) || isSomeString!(V[])))
         in
         {

dyaml/token.d

@@ -79,7 +79,7 @@ struct Token
  *          end   = End position of the token. 
  *          value = Value of the token.
  */
-Token directiveToken(in Mark start, in Mark end, in string value) pure @safe nothrow
+Token directiveToken(const Mark start, const Mark end, const string value) pure @safe nothrow
 {
     return Token(value, start, end, TokenID.Directive);
 }
@@ -91,7 +91,7 @@ Token directiveToken(in Mark start, in Mark end, in string value) pure @safe not
  *          start = Start position of the token.
  *          end   = End position of the token.
  */
-Token simpleToken(TokenID id)(in Mark start, in Mark end) pure @safe nothrow
+Token simpleToken(TokenID id)(const Mark start, const Mark end) pure @safe nothrow
 {
     return Token(null, start, end, id);
 }
@@ -103,7 +103,7 @@ Token simpleToken(TokenID id)(in Mark start, in Mark end) pure @safe nothrow
  *          end      = End position of the token.
  *          encoding = Encoding of the stream.
  */
-Token streamStartToken(in Mark start, in Mark end, in Encoding encoding) pure @safe nothrow
+Token streamStartToken(const Mark start, const Mark end, const Encoding encoding) pure @safe nothrow
 {
     return Token(null, start, end, TokenID.StreamStart, ScalarStyle.Invalid, encoding);
 }
@@ -126,7 +126,7 @@ alias simpleToken!(TokenID.FlowEntry)          flowEntryToken;
  *          end   = End position of the token.
  *          value = Value of the token.
  */
-Token simpleValueToken(TokenID id)(in Mark start, in Mark end, string value) pure @safe nothrow
+Token simpleValueToken(TokenID id)(const Mark start, const Mark end, string value) pure @safe nothrow
 {
     return Token(value, start, end, id);
 }
@@ -144,7 +144,7 @@ alias simpleValueToken!(TokenID.Anchor) anchorToken;
  *          value = Value of the token.
  *          style = Style of the token.
  */
-Token scalarToken(in Mark start, in Mark end, in string value, in ScalarStyle style) pure @safe nothrow
+Token scalarToken(const Mark start, const Mark end, const string value, in ScalarStyle style) pure @safe nothrow
 {
     return Token(value, start, end, TokenID.Scalar, style);
 }

dyaml/zerostring.d

@@ -24,7 +24,7 @@ struct ZeroString(string TypeName)
         @disable int opCmp(ref ZeroString);
 
         ///Construct a string.
-        this(in string str) pure nothrow @safe
+        this(const string str) pure nothrow @safe
         {
             if(str is null || str == "")
             {