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新手发问超简单问题,目前还处于研读范例码的阶段,边测边看结果来理解程序9 _: R1 ]" S& i8 W" {+ H
其中有一段如下+ ]! A. [* H0 g/ \3 T" A
ask turtles with [ infected? = true ] ( q5 a6 q9 U8 i0 _" e) a0 X" h% j
我原本以为这句会回传『所有』infected? = true 的 turtle
- j2 ?; U. E3 L+ @! d但看结果似乎不是这样。
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' }( f7 p0 y6 e$ E! p7 U假设所有符合条件的有 5 笔
) Z5 p( T+ C7 }! N, }5 r, |* Z有时候回传 1 笔,有时回传 3 笔,是不固定的+ `9 `7 L C v+ K! V3 {3 A; X; b; [
回头查语法定义
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9 l0 o. r' h) T# Wagentset with [reporter]- I7 i8 s6 f g" [4 B0 \0 p
Takes two inputs: on the left, an agentset (usually "turtles" or "patches"). On the right, a boolean reporter. Reports a new agentset containing only those agents that reported true -- in other words, the agents satisfying the given condition.
1 G# A; o" \, Q/ \" z6 \它只说回传 agents satisfying the given condition
/ C; g# V+ P" O& ~是否 with 回传的是『符合条件』的数据,而不是『所有符合条件』的数据 ?
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8 }8 ]8 F; ^; m. p想确定一下7 I+ t' V" o1 w- J/ G1 r; j
谢谢!
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