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C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术
... <stdio.h>
struct str{
int len;
char s[0];
};
struct foo {
struct str *a;
};
int main(int argc, char** argv) {
struct foo f={0};
if (f.a->s) {
printf( f.a->s);
}
return 0;
}
你编译一下上面的代码，在...
Disable a method in a ViewSet, django-rest-framework
ViewSets have automatic methods to list, retrieve, create, update, delete, ...
7 Answers
...
What is the difference between linear regression and logistic regression?
When we have to predict the value of a categorical (or discrete) outcome we use logistic regression . I believe we use linear regression to also predict the value of an outcome given the input values.
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Print JSON parsed object?
...t to print the object so I can debug it (something is going wrong with the function). When I do the following...
13 Answers...
Split by comma and strip whitespace in Python
I have some python code that splits on comma, but doesn't strip the whitespace:
11 Answers
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Implementing two interfaces in a class with same method. Which interface method is overridden?
Two interfaces with same method names and signatures. But implemented by a single class then how the compiler will identify the which method is for which interface?
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What is the purpose of the “role” attribute in HTML?
I keep seeing role attributes in some people's work. I use it too, but I'm not sure about its effect.
5 Answers
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Saving changes after table edit in SQL Server Management Studio
If I want to save any changes in a table, previously saved in SQL Server Management Studio (no data in table present) I get an error message:
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rsync exclude according to .gitignore & .hgignore & svn:ignore like --filter=:C
...ync includes a nifty option --cvs-exclude to “ignore files in the same way CVS does”, but CVS has been obsolete for years. Is there any way to make it also exclude files which would be ignored by modern version control systems (Git, Mercurial, Subversion)?
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Android: Access child views from a ListView
...el position of one element in a list that's been displayed using a ListView . It seems like I should get one of the TextView's and then use getTop() , but I can't figure out how to get a child view of a ListView .
...