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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
3 ?* Y8 \4 p0 p* u+ A5 }; d其中有一段如下
" W6 D' b W3 u4 j5 H2 Hask turtles with [ infected? = true ] ) ~$ R- M- C# ]& X; }3 n- P G
我原本以为这句会回传『所有』infected? = true 的 turtle
1 \8 y& V. {, o6 Z! ^但看结果似乎不是这样。5 r1 B1 g/ w* R; F7 r, g$ j' j5 ^
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假设所有符合条件的有 5 笔
6 x& M5 K8 P: P) g有时候回传 1 笔,有时回传 3 笔,是不固定的
% I' {" A/ d+ p5 d) Z回头查语法定义1 |0 c5 |3 c3 W5 y! \9 Z3 P# ~
with
& c- v @, t. x* ?agentset with [reporter]8 k, z) t( t0 n6 \" _0 M/ 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.* ^( ]+ E) L' `3 n: j& _( i
它只说回传 agents satisfying the given condition
, [) [8 k' x- N9 f& S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 ? / o: F3 V/ d! Y0 K# J
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想确定一下
( Y* C( }' ~/ F1 p$ W$ |6 M谢谢!
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