大约有 40,000 项符合查询结果（耗时：0.0518秒） [XML]
Why do we always prefer using parameters in SQL statements?
...uld be
SELECT empSalary from employee where salary = 0 or 1=1
whereby all empSalaries would be returned.
Further, a user could perform far worse commands against your database, including deleting it If they wrote 0; Drop Table employee:
SELECT empSalary from employee where salary = 0; Drop Ta...
How do I print the elements of a C++ vector in GDB?
...o have gdb 7 (I tested it on gdb 7.01) and some python pretty-printer. Installation process of these is described on gdb wiki.
What is more, after installing above, this works well with Eclipse C++ debugger GUI (and any other IDE using GDB, as I think).
...
Using generic std::function objects with member functions in one class
...
A non-static member function must be called with an object. That is, it always implicitly passes "this" pointer as its argument.
Because your std::function signature specifies that your function doesn't take any arguments (<void(void)>), you must bind the ...
Print current call stack from a method in Python code
In Python, how can I print the current call stack from within a method (for debugging purposes).
7 Answers
...
Python list directory, subdirectory, and files
I'm trying to make a script to list all directory, subdirectory, and files in a given directory.
I tried this:
7 Answers
...
HTML5 Email Validation
...e="Submit">
</form>
And when the user press submit, it automatically shows an error message like:
share
|
improve this answer
|
follow
|
...
How to implement an STL-style iterator and avoid common pitfalls?
...requirements for an iterator to be "STL-style" and what are some other pitfalls to avoid (if any)?
8 Answers
...
How to join components of a path when you are constructing a URL in Python
...
Specifically once I have that the prefix has to ends in / and that the target path can't begin in / I might as well just concatenate. In this case I am not sure if urljoin is really helping?
– amjoconn
...
How do I avoid capturing self in blocks when implementing an API?
...ied inside the block (we're not doing that) but also they are not automatically retained when the block is retained (unless you are using ARC). If you do this, you must be sure that nothing else is going to try to execute the block after the MyDataProcessor instance is released. (Given the structure...
C default arguments
...
Not really. The only way would be to write a varargs function and manually fill in default values for arguments which the caller doesn't pass.
share
...