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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. I2 ]8 a) Z: M
其中有一段如下
e( _# N4 u! n$ u. Zask turtles with [ infected? = true ]
* R1 I' o3 N9 u, l* P/ ]2 D) H. }我原本以为这句会回传『所有』infected? = true 的 turtle
3 l2 T7 Q& g& B但看结果似乎不是这样。6 z2 k- i, f$ t
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假设所有符合条件的有 5 笔
3 _/ k T r0 _' _0 \; G$ n有时候回传 1 笔,有时回传 3 笔,是不固定的# \& |8 n- J. |
回头查语法定义
% C- B4 Z; @3 i# n- N9 K" q& gwith & \ t* i0 n) R
agentset with [reporter]2 R; i3 u3 ^9 p! s6 ^9 ^
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.& ]/ {+ G: Q, Q" m* E, {6 R
它只说回传 agents satisfying the given condition
, y6 ^* B& I0 C1 R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 ? ' Y+ `, V. w' {% g2 A
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想确定一下/ K c/ c! ^3 ~8 v" {1 k4 \, o' s
谢谢!& k- d S; W$ O/ r
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