人大经济论坛 › 论坛 › 数据科学与人工智能 › 数据分析与数据科学 › SAS专版 › Macro local table

发帖

楼主: anyme

1149 2

[问答] Macro local table [推广有奖]

0关注
0粉丝

本科生

18%

还不是VIP/贵宾

威望: 0 级
论坛币: 982 个
通用积分: 0
学术水平: 0 点
热心指数: 0 点
信用等级: 0 点
经验: 495 点
帖子: 64
精华: 0
在线时间: 54 小时
注册时间: 2005-4-6
最后登录: 2022-5-27

楼主

anyme 发表于 2011-4-28 23:28:30 |AI写论文

是否 +2 论坛币

k人参与回答

经管之家送您一份

应届毕业生专属福利!

求职就业群

赵安豆老师微信：zhaoandou666

经管之家联合CDA

送您一个全额奖学金名额~ !

立即领取

感谢您参与论坛问题回答

经管之家送您两个论坛币！

+2 论坛币

How many local symbol tables are created when macro A is called and begins to execute? Explain your answer.

%macro A(value=);
%B
%mend A;
%macro B;
%put The value to write is: &value.;
%put _user_;
%mend B;
%A(value=Today is Monday)

I print out this code:
one is : The value to write is: Today is Monday
the other : A VALUE Today is Monday

In the case, can we say that there is two local table? Why the user-defined variable "VALUE" became capital words? I never defined before.

Could you any Da Niu tell me how it works ?

Sorry can't type Chinese.

扫码加我拉你入群

请注明：姓名-公司-职位

以便审核进群资格，未注明则拒绝

分享0 收藏0 回帖

关键词：Macro Local Table ABLE ABL Macro Table

相关帖子

沙发

qiuya 发表于 2011-4-29 07:48:04

anyme 发表于 2011-4-28 23:28
In the case, can we say that there is two local table? Why the user-defined variable "VALUE" became capital words? I never defined before.

Could you any Da Niu tell me how it works ?

Sorry can't type Chinese.

Dear, If my understanding of this question is right, there is zero (null) local table created by your code.

Try to put a code :

%put _All_;

复制代码

in your SAS, The system defines it`s macro all with captial words, which is default setting.

%macro B (value=);
%put The value to write is: &value.;
%put _user_;
%mend B;
%B (value = Today is Monday)

复制代码

Try this code in your SAS, then you will know what is %put _user_; defines here :-)

I hope that helps.

藤椅

anyme 发表于 2011-4-30 00:15:31

Thank you so much.

I think
1) Macro A has an associated local symbol table when executing
2) Macro B has not an associated local symbol table when executing

2# qiuya