访问 Julia 中数组的每一行和每一列 - 冒号（）运算符

Colon()是 julia 中的内置运算符，用于指示和访问每一行和每一列。此运算符还用于获取指定数组中特定元素的索引。
示例 1：

Python

# Julia program to illustrate
# the use of Colon (:) operator
 
# Indicating every row and column
Array1 = [1 2 "Hello"; 3 4 "Geeks"]
println(Array1[:, 3])
println(Array1[1, :])

输出：

示例 2：

Python

# Julia program to illustrate
# the use of Colon (:) operator
 
# Accessing every row and column
Array1 = cat([1 2; 3 4], 
              ["hello" "Geeks"; "Welcome" "GFG"], 
              [5 6; 7 8], dims = 3)
println(Array1[:, :, 3])
 
# Using getindex with colon operator
println(getindex(Array1, 1, :, 2))

输出：