variable-assignment

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How do I assign a comment to current_user?

I have this line in my create action @comment = @video.comments.new(params[:comment]) A comment also belongs to the user who creates it. How can I assign it to the current_user? Where does it fit i[详细]

2023-02-22 03:16 分类：问答
Java Program using 4D array [closed]

Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this[详细]

2023-02-22 02:56 分类：问答
Is struct assignment atomic in C/C++?

I am writing a program which has one process reading and writing to a shared memory and another process only reading it. In the shared memory there is a struct like this:[详细]

2023-02-21 17:26 分类：问答
const pointer fix to a variable variable

I can\'t figure out how to tell C that I want a pointer开发者_如何学JAVA that will not move. It will always point to the same array. That said, the array members are not constant, but the array itself[详细]

2023-02-21 15:40 分类：问答
Is there an equivalent in DrRacket to set-car! and set-cdr! in SICP?

Is there an equivalent in DrRacket to set-car! a开发者_开发知识库nd set-cdr! in SICP?If you want to go through SICP with Racket, you should use Neil\'s package that makes it easier -- you\'d get a lan[详细]

2023-02-21 03:15 分类：问答
How to define copy constructor and = operator override in class with pointers on class object?

I heard that when there is a pointer in a class, there should always be copy constructor and = operator override 开发者_开发问答in C++. I have searched about it and didn\'t found the explanation about[详细]

2023-02-21 02:06 分类：问答
what is wrong in this command ....can you please locate the error in this command

orig_file = PRC_19_000011061354_01147_20110323.gz $( print $orig_file | cut -d\"_\" -f4 ) I need the answer开发者_如何学Go as 01147 which is the fourth field...Drop the spaces around = in[详细]

2023-02-19 22:15 分类：问答
Char pointer assignment segment fault

#include <stdio.h> #include <stdlib.h> int main(){ char *str=\"abcdce\"; char c=\'c\'; char *pfast=str,*pslow=str;[详细]

2023-02-19 17:57 分类：问答
Pass a variable from view to layout in CakePHP - or where else to put this logic?

I want to populate an array $pageWidgets in my views so I can control what widgets appear in my sidebar and with what information in my layout but from my view. My only problem is that the layout seem[详细]

2023-02-19 02:53 分类：问答
Time-consuming operation

if I have two integer variables with allocated memory and value a and b, which 开发者_StackOverflow中文版is the more time consuming (time of execution by the processor) operation: comparison (a == b)[详细]

2023-02-19 02:05 分类：问答