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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/ t$ S% g# H* l1 ^5 w% o1 W
其中有一段如下) Z) s; \2 {% c4 w& x
ask turtles with [ infected? = true ]
: O* u1 A O$ V. r8 S我原本以为这句会回传『所有』infected? = true 的 turtle
" } y9 r, W$ z& [( P% }0 y但看结果似乎不是这样。
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3 c" u/ _, S" Z, ]7 k假设所有符合条件的有 5 笔
: q& Q! |- P, y9 U. G; x有时候回传 1 笔,有时回传 3 笔,是不固定的
: P* |9 L( n0 V( Q1 T& G回头查语法定义. X8 ^8 m; O5 i6 k4 ]- Z
with
. V1 @0 J+ d$ Q" K( j5 Jagentset with [reporter]
/ \6 i6 o6 @9 u) qTakes 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.( L# U& |4 t* `4 | @; z
它只说回传 agents satisfying the given condition, {% u, Y+ L' t
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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% d( o0 R& n% b5 h% b% R/ K6 e想确定一下( |( u! z+ {- g# z+ j
谢谢!
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