Can I really check an instance variable in a block like this?

我真的可以检查一块这样的实例变量？

youdao

How can I assign a variable while inside a block?

我如何分配一个变量在一块？

youdao

I am taking value of column in one variable and checking it with If block.

我以一个变量列的值，检查它是否块。

youdao

I am taking value of column in one variable and checking it with If block.

我以一个变量列的值，检查它是否块。

youdao