person.dog.owner.call(person)); // prints undefined is Benjamin's dog' instead of Louie is Benjamin's dog'
我知道call()方法将引用没有属性有没有办法使用bind()调用()或apply()方法来打印"Louie is Benjamin's dog'"
Cause: Could not find method apply() for arguments [{plugin=eclipse}] on root project 'RssUnified'.下面是我的构建脚本:apply plugin: 'eclipse'
apply plugin: 'android
df_user['friend_counts'] = df_user['friends'].apply(lambda x: len(df_user.friends[x]))#Create a new column that holds seasonal information
df_reviews['season'] = df_reviews['month'].ap
我是scala的新手,并尝试编写以下简单的类: def m(): Unit = println("Test method") def apply: Test = new Test但如果我将apply声明为以下代码: def apply(): Test =我认为如果该方法产生一些副作用,我们需要使用括号。但事实并非如此。