1 00:00:00,330 --> 00:00:05,080 That's the only way that this expression is going to produce a true value. 2 00:00:05,100 --> 00:00:05,590 OK. 3 00:00:05,610 --> 00:00:07,380 Because you are using a carrot. 4 00:00:07,380 --> 00:00:13,530 Operator but in the previous example as you can see the use of this carrot operator here and the two 5 00:00:13,530 --> 00:00:19,680 sides of the expression the value of the two sides of the expression are are two OK are not against 6 00:00:19,740 --> 00:00:20,710 each other. 7 00:00:20,850 --> 00:00:21,490 OK. 8 00:00:21,810 --> 00:00:25,350 And the values of the two sides of the expression are not against each other. 9 00:00:25,350 --> 00:00:25,830 OK. 10 00:00:26,010 --> 00:00:27,370 Those values are true. 11 00:00:27,390 --> 00:00:33,350 So it's going to actually produce a false value but this time these two values are against each other. 12 00:00:33,390 --> 00:00:36,390 So this expression is going to produce a true value. 13 00:00:36,390 --> 00:00:39,060 So this line of code is actually get executed. 14 00:00:39,090 --> 00:00:43,140 OK so now let's actually comment out this if statement here. 15 00:00:43,140 --> 00:00:47,010 So I just wanted to type in C-h X true. 16 00:00:47,250 --> 00:00:48,970 Carrott false. 17 00:00:49,200 --> 00:00:50,350 Yes. 18 00:00:50,340 --> 00:00:54,780 That said checked and let's actually put in a pair of round brackets. 19 00:00:54,780 --> 00:00:59,830 And here again just refers to the name of our variable true and it's false. 20 00:01:00,570 --> 00:01:02,540 And then a question mark. 21 00:01:02,540 --> 00:01:05,920 True otherwise for. 22 00:01:06,390 --> 00:01:13,500 And here I am saying that if the value of this true character for the variable is true then assign the 23 00:01:13,500 --> 00:01:17,600 value 2 to this said check the method that is related to this object. 24 00:01:17,610 --> 00:01:26,070 Otherwise if the value of this true had true Chad is false actually is false then assigned a value follows 25 00:01:26,160 --> 00:01:29,670 To this I said checked Meffert that is related to this object. 26 00:01:29,670 --> 00:01:30,190 OK. 27 00:01:30,330 --> 00:01:33,420 So let's actually just create another line of code. 28 00:01:33,420 --> 00:01:40,010 See it checks to true Carrott false. 29 00:01:40,010 --> 00:01:42,710 No Dot said Check. 30 00:01:42,720 --> 00:01:47,190 Let's actually put in a pair of round brackets and add in say the apprentices. 31 00:01:47,240 --> 00:01:49,930 I can just type in an exclamation mark. 32 00:01:51,230 --> 00:01:54,950 True it false. 33 00:01:55,400 --> 00:01:56,730 OK question mark. 34 00:01:56,840 --> 00:02:00,740 True otherwise false. 35 00:02:01,160 --> 00:02:08,600 And here I am saying that if the value of these true false variables is is false then assigning the 36 00:02:08,600 --> 00:02:12,970 value true to this said check the method that is related to this object. 37 00:02:12,980 --> 00:02:16,370 Otherwise assign the value false to this set. 38 00:02:16,410 --> 00:02:18,930 Check them if that is related to this object. 39 00:02:19,010 --> 00:02:19,960 As you can see here. 40 00:02:20,060 --> 00:02:23,860 OK so now let's actually run our project and see the results. 41 00:02:23,870 --> 00:02:26,160 So as you can see here now. 42 00:02:26,200 --> 00:02:28,510 Again it is showing us the same results. 43 00:02:28,520 --> 00:02:32,270 The value of these two cannot falsifiable is true. 44 00:02:32,500 --> 00:02:36,020 OK because these two values are against each other. 45 00:02:36,140 --> 00:02:38,680 So it is now producing the true value. 46 00:02:38,900 --> 00:02:44,900 And here as you can see we said if the value of the first variable is true then assigned a value true 47 00:02:45,290 --> 00:02:48,710 to this check if it is related to dismount to this object. 48 00:02:48,710 --> 00:02:51,470 Otherwise assign the value false to this method. 49 00:02:51,710 --> 00:02:58,040 And here we are saying if the value of this true carried false valuable is false then assigned a value 50 00:02:58,050 --> 00:03:02,040 true to this up to this object. 51 00:03:02,520 --> 00:03:04,930 To discuss Meffert that is related to this object. 52 00:03:04,940 --> 00:03:07,640 Otherwise assign the value false to dismiss it. 53 00:03:07,640 --> 00:03:09,270 That is related to this object. 54 00:03:09,310 --> 00:03:11,980 OK so hopefully that makes sense. 55 00:03:12,140 --> 00:03:16,310 And let's actually go back inside this content. 56 00:03:16,460 --> 00:03:18,660 Underlying mean that I made that example. 57 00:03:18,830 --> 00:03:25,410 And then let's actually drag it another linearly out horizontal into this linearly and vertical here. 58 00:03:25,430 --> 00:03:33,250 OK and let's actually rake in a large takes you into this linearly out horizontal and double DoubleClick 59 00:03:33,250 --> 00:03:34,790 honied for the text. 60 00:03:34,790 --> 00:03:39,950 Just typing fonts carry true. 61 00:03:40,310 --> 00:03:46,640 OK so it's actually dragging a checkbox into this linearly or horizontal. 62 00:03:46,640 --> 00:03:49,050 So as you can see here this is the checkbox. 63 00:03:49,130 --> 00:03:50,280 Just put it here. 64 00:03:50,590 --> 00:04:00,440 Double click on it for the text just typing yes and for the ID just type in CMD X of false charites 65 00:04:01,080 --> 00:04:01,930 true. 66 00:04:02,700 --> 00:04:03,350 OK. 67 00:04:03,530 --> 00:04:07,400 Yes and that's actually correct. 68 00:04:07,410 --> 00:04:10,430 Another checkbox here besides this checkbox. 69 00:04:10,610 --> 00:04:12,710 Double click on it for the text. 70 00:04:12,740 --> 00:04:13,870 Just type in no. 71 00:04:14,120 --> 00:04:20,000 And for the ID just type in X fonts can it. 72 00:04:20,340 --> 00:04:22,140 True no. 73 00:04:22,710 --> 00:04:30,890 OK so if you've got an ID for this checkbox C-h x files scattered through yes and we've got an ID for 74 00:04:30,920 --> 00:04:31,710 this checkbox. 75 00:04:31,750 --> 00:04:33,910 C-h x false carrot through no. 76 00:04:34,020 --> 00:04:41,750 OK let's click on this are linearly out horizontal and check this checkbox your center underline horizontal 77 00:04:41,990 --> 00:04:46,400 that is related to describe the attributes of these linearly out horizontal. 78 00:04:46,670 --> 00:04:52,940 So now let's actually go back inside this activity that outfight here and then let's actually scroll 79 00:04:52,940 --> 00:04:56,260 to the top of the screen to the top of the file. 80 00:04:56,390 --> 00:04:59,480 Here let's actually create a comment OK. 81 00:04:59,970 --> 00:05:13,740 Follows carry it through that actually create a checkbox object see fonts Chad it true. 82 00:05:14,280 --> 00:05:15,510 Yes. 83 00:05:15,510 --> 00:05:21,340 Assignment operator now let's actually actually cast this object to a checkbox object. 84 00:05:21,510 --> 00:05:32,590 And here is just typing find you by ID are dot ID dot dot see it checks false challenged true. 85 00:05:32,820 --> 00:05:33,650 Yes. 86 00:05:33,960 --> 00:05:34,990 OK. 87 00:05:35,070 --> 00:05:41,960 Again let's actually create another checkbox see it checks false Chad it's true. 88 00:05:42,240 --> 00:05:44,440 No assignment operator. 89 00:05:44,520 --> 00:05:52,560 And here let's actually test this object to a checkbox object find view by ID or dot ID dot. 90 00:05:52,650 --> 00:05:58,460 See it takes four false chart it true. 91 00:05:58,920 --> 00:05:59,680 No. 92 00:06:00,150 --> 00:06:00,860 OK. 93 00:06:01,170 --> 00:06:04,690 And then we need to put a semicolon at the end of our statement. 94 00:06:04,710 --> 00:06:12,670 So now let's actually scroll down the file here and here let's actually create a comment for us. 95 00:06:12,800 --> 00:06:14,540 Try it through. 96 00:06:15,130 --> 00:06:22,310 OK so now let's actually create a boolean valuable boolean and the name of our value but is false. 97 00:06:22,380 --> 00:06:24,630 Carrott true. 98 00:06:24,780 --> 00:06:33,050 Assignment operator and here I want to actually create a boolean expression font's chatted through OK 99 00:06:33,090 --> 00:06:36,340 as you can see again these two values are against each other. 100 00:06:36,420 --> 00:06:41,760 So it is going to actually produce a true value and that true value is going to be assigned to this 101 00:06:41,760 --> 00:06:42,260 variable. 102 00:06:42,270 --> 00:06:43,200 OK. 103 00:06:43,230 --> 00:06:46,720 So let's actually create an if statement here. 104 00:06:46,740 --> 00:06:55,890 If the value of these falls are Carrott true valuable is true then a sign that actually executed this 105 00:06:55,890 --> 00:07:01,640 line of code here C-h X font's it through yes. 106 00:07:01,920 --> 00:07:03,750 That said check it. 107 00:07:03,810 --> 00:07:04,640 True. 108 00:07:04,900 --> 00:07:05,450 OK. 109 00:07:05,480 --> 00:07:11,730 Otherwise else if the value of this false carriage too variable is not true. 110 00:07:11,850 --> 00:07:12,690 So it is false. 111 00:07:12,690 --> 00:07:13,480 OK. 112 00:07:14,160 --> 00:07:22,440 If the value of these false Carrott true valuable is not true then execute this line of code here see 113 00:07:22,710 --> 00:07:29,310 X Files carried through no data said checked. 114 00:07:29,430 --> 00:07:30,330 True. 115 00:07:30,520 --> 00:07:31,040 OK. 116 00:07:31,290 --> 00:07:32,880 So hopefully that makes sense. 117 00:07:33,090 --> 00:07:36,070 And let's actually run our project and see what happens. 118 00:07:36,200 --> 00:07:36,980 OK everyone. 119 00:07:36,990 --> 00:07:43,050 Now as you can see here the value of this false a true variable is true. 120 00:07:43,080 --> 00:07:43,560 OK. 121 00:07:43,620 --> 00:07:51,120 As I said before when you are using this card operator in your boolean expressions are the only time 122 00:07:51,120 --> 00:07:57,540 that this expression is going to actually produce a true value is that the value of one side of the 123 00:07:57,630 --> 00:08:01,990 expression is against the value of the other side of the expression. 124 00:08:01,990 --> 00:08:02,640 OK. 125 00:08:03,120 --> 00:08:05,480 So we have false capital variable. 126 00:08:05,480 --> 00:08:08,120 So this expression is going to produce a true value. 127 00:08:08,280 --> 00:08:13,770 OK so now let's actually comment about this if if else statement here. 128 00:08:14,430 --> 00:08:15,050 OK. 129 00:08:15,330 --> 00:08:17,980 Just type in C-h x false. 130 00:08:18,320 --> 00:08:20,120 Carry it through. 131 00:08:20,820 --> 00:08:21,810 Yes. 132 00:08:21,810 --> 00:08:28,650 That said check it and let's actually put in a pair of round brackets and here inside the apprentice's 133 00:08:28,650 --> 00:08:37,040 just type in fonts carry it through questionmark through otherwise fots. 134 00:08:37,370 --> 00:08:37,690 OK. 135 00:08:37,700 --> 00:08:46,210 And here I am saying if the value of this false carry through variable is true which it is then assign 136 00:08:46,210 --> 00:08:52,160 the value true to this said checked Meffert that is related to this false carrot true. 137 00:08:52,170 --> 00:08:52,830 Yes. 138 00:08:53,010 --> 00:08:53,700 Object. 139 00:08:53,700 --> 00:08:54,570 OK. 140 00:08:54,720 --> 00:09:00,480 So as you can see here this tick box is actually checked and it's actually again just type in here. 141 00:09:00,500 --> 00:09:04,160 See it checks false. 142 00:09:04,580 --> 00:09:04,950 True. 143 00:09:04,970 --> 00:09:11,150 No that said check it and let's actually put in a pair of and brackets here and here. 144 00:09:11,250 --> 00:09:20,670 Let's actually put in an exclamation mark here fonts carried through questionmark through otherwise 145 00:09:21,120 --> 00:09:22,490 fonts. 146 00:09:22,740 --> 00:09:29,830 And here I am saying that if the value of this false character variable is actually false then assign 147 00:09:29,830 --> 00:09:35,190 the value true to this said check the method which is related to this object. 148 00:09:35,250 --> 00:09:35,760 OK. 149 00:09:35,880 --> 00:09:37,020 This component. 150 00:09:37,170 --> 00:09:44,190 Otherwise if the value of this false catch a true value is actually true then assigned a value false 151 00:09:44,520 --> 00:09:47,310 to this set check if it is related to this object. 152 00:09:47,310 --> 00:09:47,690 OK. 153 00:09:47,790 --> 00:09:52,980 So as you can see here these are checkboxes actually checked off OK. 154 00:09:53,400 --> 00:09:55,670 And this check box is on. 155 00:09:56,040 --> 00:09:57,530 So hopefully that makes sense.