Go 学习笔记，持续更新。 原文请参考: http://kimh.github.io/blog/en/go/how-can-i-do-x-in-ruby-with-go-part-1/
Create Array
Ruby:
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numbers = [1,2,3] fruits = ["apple", "banana", "grape"]
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Go:
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numbers := []int{1,2,3} fruits := []string{"apple", "banana", "grape"}
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Append an element to array
Ruby:
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numbers = [1,2,3] numbers << 4
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Go:
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numbers := []int{1,2,3} numbers.append(numbers, 4)
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Concatenate arryas
Ruby:
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numbers1 = [1,2,3] numbers2 = [4,5,6] numbers1 = numbers1 + numbers2
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Go:
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numbers1 := []int{1,2,3} numbers2 := []int{4,5,6} numbers1 = append(numbers1, numbers2...)
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Go:
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numbers1 := []int{1,2,3} numbers1 = append(numbers1, 4, 5, 6)
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Create multi dimension array
Ruby:
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multi_array = [[1,2,3],[4,5,6]]
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Go:
1
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multi_array := [][]int{{1, 2, 3}, {4,5,6}}
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Create empty array
Ruby:
Go:
Iterate an array
Ruby:
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numbers = [1,2,3] numbets.each {|num| puts num }
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Go:
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numbers := []int{1,2,3} for _, num := range numbers { fmt.Println(num) }
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Looping N times
Ruby:
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5.times {|num| puts num}
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Go:
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for num := 0; num < 5; num ++ { fmt.Println(num) }
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Clone array
Ruby:
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new_array = old_array.clone
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Go:
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new_array := make([]int, len(old_array)) copy(new_array, old_array)
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Accessing elements of array by range
Ruby:
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numbers = [1,2,3,4] numbers[0..3]
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Go:
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go_array := []int{1,2,3,4} go_array[0:4]
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Compare array
Ruby:
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if array1 == array2 puts "Same array" end
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Go:
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go_array := []int{1, 2, 3, 4, 5, 6, 7} bb_array := []int{3, 2, 3, 4, 5, 6, 7} same := true for i, ele := range go_array { if bb_array[i] != ele { same = false break } } if same == true { fmt.Println("Same slice") }
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Check if array include an element
Ruby:
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fruits = ["apple", "banana", "grape"] if fruits.include?("apple") puts "include!" end
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Go:
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include := false fruits := []string{"apple", "banana", "grape"} for _, ele := range fruits { if ele == "apple" { include = true break } } if include == true { fmt.Println("Included") }
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Define a method with variable length argument
Ruby:
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def (*args) args.each {|arg| puts arg} end
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Go:
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func (arguments ...int) { for _, arg := range arguments { fmt.Println(arg) } } foo(1,2,3,4,5)
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Nil checking
Ruby:
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if val.nil? puts "val is nil" end
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Go:
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var str string if str =="" { fmt.Println("str is empty") } var i int if i == 0 { fmt.Println("i is zero") }
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