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透過 AddGraphicsScript 和 Eval/Expr 動態更新 GB - 拋出“名稱未解析”

namesdefaulttohere(1);
try(nw3<<CLOSE window="">];

foreach({alpha}, words("a b c"),
	map[alpha] = graphbox(suppress axes, frame size(100,100));
	vlb<<APPEND></APPEND></CLOSE>

Error:

<CODE class=" language-jsl">Name Unresolved: key in access or evaluation of 'key' , key/*###*/

<BR /><BR /><LINGO-LABS id="lingo-labs-845133" slang="en-US" mode="CREATE"><LINGO-LABEL>自動化和腳本</LINGO-LABEL></LINGO-LABS>回覆：透過 AddGraphicsScript 和 Eval/Expr 對 GB 進行動態更新 - 拋出“名稱未解析”

明白了。我們可以在初始化 GB 時保存“key”的值，而不是在評估時獲取它。在這裡，我們將其稱為“beta”，但 key/beta 只是對其中一個單字（“abc”）的引用

toggle = expr(
	x = random integer(10,90);
	y = random integer(10,90);
	
	foreach({key}, map,
		gb = map[key];
		f = gb[framebox(1)];
		f << add graphics script(
			eval(eval expr( text({x,y}, expr(beta)) )) // change #1
		)
	)
);


vlb = vlistbox();
map = [=>];

foreach({alpha}, words("a b c"),
	map[alpha] = eval(eval expr(graphbox(suppress axes, frame size(100,100),

		beta = expr(alpha); // change #2 (plus wrapping GB in eval/eval expr
		
	)));
	vlb<<APPEND></APPEND>

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