我在GitHub上有一个有趣的应用程序。问题是我有一个错误,而且我根本不认识Ruby。
我收到错误消息:
/Library/Ruby/Gems/2.0.0/gems/dmm_util-0.1.0/lib/dmm_util/fluke28x_driver.rb:274:
in `parse_readings': undefined method `each_slice' for #<DmmUtil::ByteStr:0x007ffbf38e4620> (NoMethodError)
在代码中,有:
require 'rubygems'
require 'serialport'
require 'enumerator'
# ...
def parse_readings(reading_bytes)
readings = {}
ByteStr.new(reading_bytes).each_slice(30) do |reading_arr|
r = reading_arr.map{|b| b.chr}.join
# All bytes parsed
readings[get_map_value(:readingid, r, 0)] = {
:value => get_double(r, 2),
:unit => get_map_value(:unit, r, 10),
:unit_multiplier => get_s16(r, 12),
:decimals => get_s16(r, 14),
:display_digits => get_s16(r, 16),
:state => get_map_value(:state, r, 18),
:attribute => get_map_value(:attribute, r, 20),
:ts => get_time(r, 22)
}
end
readings
end
我的Ruby版本是:2.0.0p648
答案 0 :(得分:1)
问题是你在一个未知类型的类上调用each_slice
方法的类。 each_slice
是enumerable
方法,因此请尝试将其转换为数组对象。试一试:
def parse_readings(reading_bytes)
readings = {}
bytestr = ByteStr.new(reading_bytes).chars.to_a
bytestr.each_slice(30) do|reading_arr|
r = reading_arr.map{|b| b.chr}.join
# All bytes parsed
readings[get_map_value(:readingid, r, 0)] = {
:value => get_double(r, 2),
:unit => get_map_value(:unit, r, 10),
:unit_multiplier => get_s16(r, 12),
:decimals => get_s16(r, 14),
:display_digits => get_s16(r, 16),
:state => get_map_value(:state, r, 18),
:attribute => get_map_value(:attribute, r, 20),
:ts => get_time(r, 22)
}
end
readings
end