大约有 47,000 项符合查询结果（耗时：0.0582秒） [XML]
Post data to JsonP
...
I know this is serious necromancy, but I thought I'd post my implementation of JSONP POST using jQuery, which I'm successfully using for my JS widget (this is used for customer registration and login):
Basically, I'm using an I...
How to express a One-To-Many relationship in Django
I'm defining my Django models right now and I realized that there wasn't a OneToManyField in the model field types. I'm sure there's a way to do this, so I'm not sure what I'm missing. I essentially have something like this:
...
Transactions in .net
... to our connection "conn". If we want to call out to different methods, we now need to pass "conn" around.
The alternative is an ambient transaction; new in .NET 2.0, the TransactionScope object (System.Transactions.dll) allows use over a range of operations (suitable providers will automatically e...
C++ Double Address Operator? (&&)
...meter of a function. And it only takes a r-value expression. If you don't know what an r-value is, the simple explanation is that it doesn't have a memory address. E.g. the number 6, and character 'v' are both r-values. int a, a is an l-value, however (a+2) is an r-value. For example:
void foo(int&...
How should I edit an Entity Framework connection string?
...string for an Entity Framework data model ( .edmx file). But I'd like to know: Is there a way to edit the EF connection string using the designer?
...
How is it possible to declare nothing inside main() in C++ and yet have a working application after
...ariable ignore has to be initialized before entering into main() function. Now in order to initialize the global, print_fibs() needs to be executed where you can do anything — in this case, compute fibonacci numbers and print them! A similar thing I've shown in the following question (which I had ...
Sqlite or MySql? How to decide? [closed]
...r an Athlon 1600. 1GB RAM. 5400RPM IDE disk. Redhat 7.3. He concludes: «I now believe that SQLite is appropriate for use as the primary database on websites that get up to 1 million hits per day.»
– Rutrus
Dec 27 '16 at 0:45
...
bash: shortest way to get n-th column of output
...
You can go one step further and define D to be:
alias -g D="|xargs rm"
Now you can type:
cat file X1 D
to delete all files mentioned in the first column of file "file".
If you know the bash, the zsh is not much of a change except for some new features.
HTH Chris
...
Generating PDF files with JavaScript
...uestion before I started writing it and thought I'd come back and let you know :)
Generate PDFs in Javascript
Example create a "Hello World" PDF file.
// Default export is a4 paper, portrait, using milimeters for units
var doc = new jsPDF()
doc.text('Hello world!', 10, 10)
doc.save('a4.p...
Could someone explain the pros of deleting (or keeping) unused code?
...
which inadvertently involve the 'dormant' code and can introduce
bugs. I know it's happened on projects I've worked on.
The maintenance of any code is an administrative burden. By preserving
old redundant code that burden is increased. For example, merging changes in the main branch becomes harder ...