Decision tables: Difference between revisions

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<lang d>import std.stdio, std.algorithm, std.exception, std.array;

struct DecisionTable {

immutable struct DecisionTable {

alias immutable(bool)[] IBA;

const string[] conds, actions;

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in size_t newLen)

pure nothrow {

~~bool[]~~ result = new bool[newLen];

auto result = new bool[newLen];

result[0 .. b.length] = b[];

return ~~assumeUnique(~~result);

return result.assumeUnique;

}

this(in string[] c, ~~in string[] a, in bool[][][] q)~~

this(immutable string[] c,

immutable string[] a,

~~const~~ pure nothrow {

immutable bool[][][] q) pure nothrow {

conds = c;

actions = a;

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r[growTo(p[0], conds.length)] =

growTo(p[1], actions.length);

rules = ~~assumeUnique(~~r);

rules = r.assumeUnique;

}

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auto iTested = growTo(tested, conds.length);

if (iTested in rules)

foreach (i, immutable~~(byte)~~ e; rules[iTested])

foreach (immutable i, immutable e; rules[iTested])

if (e) ~~rightActions ~= actions[i];~~

if (e)

rightActions ~= actions[i];

if (!rightActions.empty)

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string answer = "no";

try

answer = stdin.readln();

answer = stdin.readln;

catch (StdioException)

writeln("no");

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void main() {

enum { F = false, T = true }

immutable d = DecisionTable(

immutable d = immutable(DecisionTable)(

["Printer is unrecognised",

"A red light is flashing",

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);

d.consult();

d.consult;

}</lang>