在 Julia 中通过集合广播一个函数——broadcast() 和 broadcast!() 方法

broadcast()是 julia 中的内置函数，用于在指定的数组、元组或集合上广播函数f 。

Syntax: broadcast(f, As…)

Parameters:

• f: Specified function.
• As: Specified arrays, tuples or collections.

Returns: It returns the results of the process of broadcasting the function over the specified arrays, tuples or collections.

例子：

# Julia program to illustrate 
# the use of broadcast() method
   
# Getting the results of the process
# of broadcasting the function over 
# the specified arrays, tuples or collections
A = [1 3; 5 7; 9 11; 13 15; 17 19]
B = [2, 4, 6, 8, 10]
println(broadcast(+, A, B))
broadcast(-, A, B)

输出：

播送！（）

broadcast!()是 julia 中的一个内置函数，它与 broadcast()函数相同，但将 broadcast(f, As...) 的结果存储在指定的 dest 数组中。

Syntax: broadcast!(f, dest, As…)

Parameters:

• f: Specified function.
• dest: Specified destination array.
• As: Specified arrays, tuples or collections.

Returns: It returns the results of the process of broadcasting the function over the specified arrays, tuples or collections.

例子：

# Julia program to illustrate 
# the use of broadcast !() method
   
# Getting the results of the process
# of broadcasting the function over 
# the specified arrays, tuples or collections
A = [1; 2]; 
B = [3; 4];
broadcast !(+, B, A)
println(B)
println(A)
broadcast !(+, B, A, (5, 10))
println(B)
println(A)

输出：