groovy – 安全的字符串切片

发布时间：2020-12-14 16:29:02 所属栏目：大数据来源：网络整理

导读：我有一个字符串,我想要250个或更少的字符.我是用 java方式做的,但是有一个常规的快捷方式： def longString = "This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my real

我有一个字符串,我想要250个或更少的字符.我是用 java方式做的,但是有一个常规的快捷方式：

def longString = "This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string.This is my really long string."
def shortString = "This is my really short string."

#ideal would be something like:
return longString[0..250]
#versus how i currently have it
#how can i simplify this one...
return shortString.size() < 250? shortString: shortString.substring(0,250)

解决方法

You can use take：

String shortString = longString.take( 250 )

（编辑：李大同）

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