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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
. B3 P9 z3 K8 W+ u2 \8 z其中有一段如下# S8 |9 A/ N' n- v+ n
ask turtles with [ infected? = true ] 5 q. \$ s+ Z8 r8 U8 _" U
我原本以为这句会回传『所有』infected? = true 的 turtle
0 {0 m# ^$ z' T+ Y( u, O( S6 j: b但看结果似乎不是这样。- l* t9 y n' w6 e7 o) S
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假设所有符合条件的有 5 笔
0 B% A# s2 G& Q, z1 L有时候回传 1 笔,有时回传 3 笔,是不固定的1 D& w; O4 B' I2 r) f
回头查语法定义
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agentset with [reporter]* Q$ A1 A4 x8 @* _, _; o( z& L
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.
" H- u* ?7 c7 t5 E& O它只说回传 agents satisfying the given condition
0 c; I5 j5 V+ l+ F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 ?
Q& ]3 {6 i, c
5 j3 L$ m j. o0 x6 U, c4 Y想确定一下+ h' F* R+ d2 q1 @6 A
谢谢!, _' T7 ^4 u. v/ \8 J4 ]
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