Associative array/Iteration: Difference between revisions
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{{omit from|Integer BASIC}} |
{{omit from|Integer BASIC}} |
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{{omit from|TI-89 BASIC}} <!-- No builtin assoc arrays, would not be enlightening to show a defn --> |
{{omit from|TI-89 BASIC}} <!-- No builtin assoc arrays, would not be enlightening to show a defn --> |
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=={{header|Vala}}== |
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{{libheader|Gee}} |
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<lang vala> |
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using Gee; |
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void main(){ |
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// declare HashMap |
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var map = new HashMap<string, double?>(); |
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// set 3 entries |
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map["pi"] = 3.14; |
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map["e"] = 2.72; |
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map["golden"] = 1.62; |
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// iterate over (key,value) pair |
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foreach (var elem in map.entries){ |
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string name = elem.key; |
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double num = elem.value; |
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stdout.printf("%s,%f\n", name, num); |
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} |
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// iterate over keys |
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foreach (string key in map.keys){ |
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stdout.printf("%s\n", key); |
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} |
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// iterate over values |
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foreach (double num in map.values){ |
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stdout.printf("%f\n", num); |
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} |
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} |
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</lang> |
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Compile with flag: |
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<pre> |
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--pkg gee-1.0 |
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</pre> |
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Output: |
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<pre> |
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e,2.720000 |
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golden,1.620000 |
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pi,3.140000 |
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e |
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golden |
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pi |
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2.720000 |
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1.620000 |
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3.140000 |
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</pre> |
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