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annotate qt/qtd/util/Tuple.d @ 288:f9559a957be9 signals

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new signals and slots implementation
author eldar
date Sun, 08 Nov 2009 19:28:01 +0000
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288
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1 /**
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2 * Tuple-related stuff.
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3 *
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4 * Authors: Daniel Keep <daniel.keep@gmail.com>
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5 * Copyright: See LICENSE.
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6 */
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7 module qt.qtd.util.Tuple;
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8
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9 import std.typetuple;
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10
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11 /**
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12 * Sequence can be used to generate a tuple of integer values. It can be
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13 * used in one of three forms:
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14 *
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15 * -----
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16 * Sequence!(6) // ==> (0, 1, 2, 3, 4, 5)
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17 * Sequence!(1,6) // ==> (1, 2, 3, 4, 5)
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18 * Sequence!(1,6,2) // ==> (1, 3, 5)
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19 * -----
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20 */
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21
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22 template Sequence(int max)
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23 {
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24 static if( max <= 0 )
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25 alias TypeTuple!() Sequence;
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26 else
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27 alias TypeTuple!(Sequence!(max-1), max-1) Sequence;
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28 }
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29
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30 /// ditto
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31
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32 template Sequence(int min, int max)
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33 {
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34 static if( max <= min )
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35 alias TypeTuple!() Sequence;
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36 else
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37 alias TypeTuple!(Sequence!(min, max-1), max-1) Sequence;
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38 }
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39
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40 /// ditto
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41
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42 template Sequence(int min, int max, int stride)
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43 {
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44 static if( min >= max )
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45 alias TypeTuple!() Sequence;
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46 else
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47 alias TypeTuple!(min, Sequence!(min+stride, max, stride)) Sequence;
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48 }
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49
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50 version( Unittest )
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51 {
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52 static assert( Sequence!(3)[0] == 0 );
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53 static assert( Sequence!(3)[1] == 1 );
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54 static assert( Sequence!(3)[2] == 2 );
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55 static assert( Sequence!(3).length == 3 );
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56
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57 static assert( Sequence!(1, 3)[0] == 1 );
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58 static assert( Sequence!(1, 3)[1] == 2 );
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59 static assert( Sequence!(1, 3).length == 2 );
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60
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61 static assert( Sequence!(1, 5, 2)[0] == 1 );
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62 static assert( Sequence!(1, 5, 2)[1] == 3 );
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63 static assert( Sequence!(1, 5, 2).length == 2 );
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64 }