example 7

src/example_7/.gitignore

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+.dub
+docs.json
+__dummy.html
+docs/
+/example_7
+example_7.so
+example_7.dylib
+example_7.dll
+example_7.a
+example_7.lib
+example_7-test-*
+*.exe
+*.o
+*.obj
+*.lst

src/example_7/dub.json

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+{
+  "authors": [
+    "alexander"
+  ],
+  "description": "Основные структуры данных.",
+  "license": "proprietary",
+  "name": "example_7",
+  "targetPath": "bin"
+}

src/example_7/source/app.d

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+import std.algorithm, std.regex, std.range, std.stdio, std.string, std.ascii;
+
+struct PersonaData
+{
+    ulong totalWordsSpoken;
+    ulong[string] wordCount;
+}
+
+void addParagraph(string line, ref PersonaData[string] info)
+{
+    line = strip(line);
+    auto sentence = line.find(". ");
+    if (sentence.empty)
+    {
+        return;
+    }
+    auto persona = line[0 .. $ - sentence.length];
+    sentence = toLower(strip(sentence[2 .. $]));
+    auto words = split(sentence, regex("[ \t,.;:?]+"));
+    auto data = persona in info;
+    if (data)
+    {
+        data.totalWordsSpoken += words.length;
+        foreach (word; words)
+            ++data.wordCount[word];
+    }
+    else
+    {
+        PersonaData newData;
+        newData.totalWordsSpoken = words.length;
+        foreach (word; words)
+            newData.wordCount[word] = 1;
+        info[persona] = newData;
+    }
+}
+
+void printResults(PersonaData[string] info)
+{
+    foreach (persona, data; info)
+    {
+        writefln("%20s %6u %6u", persona, data.totalWordsSpoken,
+                data.wordCount.length);
+    }
+}
+
+void main()
+{
+    PersonaData[string] info;
+    string currentParagraph;
+    auto f = File("./source/hamlet.txt", "r");
+    foreach (line; f.byLine)
+    {
+        if (line.startsWith("    ")
+                && line.length > 4
+                && isAlpha(line[4]))
+        {
+            currentParagraph ~= line[3 .. $];
+        }
+        else if (line.startsWith("  ")
+                && line.length > 2
+                && isAlpha(line[2]))
+        {
+            addParagraph(currentParagraph, info);
+            currentParagraph = line[2 .. $].idup;
+        }
+    }
+    printResults(info);
+}