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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
" }# A, N$ L+ Q# ]其中有一段如下/ t3 p, p7 ]: W7 D
ask turtles with [ infected? = true ] " S9 g( s, V+ n u3 B. c `/ f
我原本以为这句会回传『所有』infected? = true 的 turtle
* i/ F$ w. Z# a* ]$ V但看结果似乎不是这样。
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4 }+ U/ A# a. O: d. R) O假设所有符合条件的有 5 笔
- \9 h+ c! n& H0 f有时候回传 1 笔,有时回传 3 笔,是不固定的# B! \" m A6 K3 W) Q: n
回头查语法定义8 J7 K% n, S* h( V
with " s) F* S. u S3 c6 E( I2 p
agentset with [reporter]
" V* y% K& G4 C9 S; K2 p/ rTakes 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.% g. M! B& D u% r
它只说回传 agents satisfying the given condition
! O1 ~1 ]6 N9 g6 ]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 ? 3 D+ D+ Y' f2 E/ l l U
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想确定一下
' v1 V7 Q+ R8 C' e9 o) ^: i% K谢谢!
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