在Julia数组理解中杀死For循环 [英] Killing a For loop in Julia array comprehension

问题描述

我在Julia中有以下代码行:

I have the following line of code in Julia:

X=[(i,i^2) for i in 1:100 if i^2%5==0]

基本上，如果i^2和5的余数为零，则从i=1 to 100返回元组(i,i^2)的列表.我想做的是，在数组理解中，如果i^2变得大于1000，请打破for循环.但是，如果我实现

Basically, it returns a list of tuples (i,i^2) from i=1 to 100 if the remainder of i^2 and 5 is zero. What I want to do is, in the array comprehension, break out of the for loop if i^2 becomes larger than 1000. However, if I implement

X=[(i,i^2) for i in 1:100 if i^2%5==0 else break end]

我收到错误消息:syntax: expected "]".

有什么方法可以轻松地打破数组内部的for循环吗?我尝试过在线查找，但没有任何反应.

Is there any way to easily break out of this for loop inside the array? I've tried looking online, but nothing came up.

推荐答案

我不这么认为.您总是可以

I don't think so. You could always just

tmp(i) = (j = i^2; j > 1000 ? false : j%5==0)
X=[(i,i^2) for i in 1:100 if tmp(i)]

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