如何在 Perl 中运行匿名函数? [英] How to run an anonymous function in Perl?

问题描述

(sub {
print 1;
})();



sub {
print 1;
}();

我尝试了各种方法，都错了...

I tried various ways, all are wrong...

推荐答案

(sub { ... }) 会给你指向函数的指针，所以你必须通过引用调用.

(sub { ... }) will give you the pointer to the function so you must call by reference.

(sub { print "Hello world\n" })->();

Blagovest Buyukliev 指出的另一种简单方法是取消引用函数指针并调用它使用 { } 运算符

The other easy method, as pointed out by Blagovest Buyukliev would be to dereference the function pointer and call that using the { } operators

&{ sub { print "Hello World" }}();

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