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App Inventor 2 手机蓝牙及语音控制 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
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1.掌握蓝牙客户端或服务端组件的使用；
2.学会编写手机蓝牙APP，并向Arduino发送控制指令；
3.学会编写手机语音控制程序，并能通过语音控制Arduino等设备。 【项目范例】
1. 情境
通过对APPInvent...
App Inventor 2 数学代码块 · App Inventor 2 中文网
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App Inventor 2 数学代码块
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Is there an equivalent for the Zip function in Clojure Core or Contrib?
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(map vector '(1 2 3) '(4 5 6))
does what you want:
=> ([1 4] [2 5] [3 6])
Haskell need...
Format number to 2 decimal places
I would like to know how can I output a number with 2 decimal places, without rounding the original number.
6 Answers
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How can I create a two dimensional array in JavaScript?
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Algorithm to calculate the number of divisors of a given number
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How can I plot with 2 different y-axes?
...that each set of points has its own (different) y-axis (i.e., in positions 2 and 4 on the figure) but the points appear superimposed on the same figure.
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How to parse float with two decimal places in javascript?
... toFixed() to do that
var twoPlacedFloat = parseFloat(yourString).toFixed(2)
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How can I get nth element from a list?
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Look here, the operator used is !!.
I.e. [1,2,3]!!1 gives you 2, since lists are 0-indexed.
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