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lwhuang 發表於 15-10-29 11:24 
意思大致如下
想請教一下這個語法
SYNTAX | ValueWhen(EXPRESSION, ARRAY, n = 1) | RETURNS | ARRAY | FUNCTION | Returns the value of the ARRAY when the EXPRESSION was true on the n -th most recent occurrence. Note: this function allows also 0 and negative values for n - this enables referencing future | EXAMPLE | valuewhen( cross( close, ma(close,5) ) ,macd(), 1) |
大致的意思? 剛看了英文意思,
還是有點不太明白
謝謝啦~
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