大约有 47,000 项符合查询结果（耗时：0.0483秒） [XML]
Setting the selected value on a Django forms.ChoiceField
Here is the field declaration in a form:
8 Answers
8
...
Best way to generate random file names in Python
...te temporary file names, see http://docs.python.org/library/tempfile.html. For instance:
In [4]: import tempfile
Each call to tempfile.NamedTemporaryFile() results in a different temp file, and its name can be accessed with the .name attribute, e.g.:
In [5]: tf = tempfile.NamedTemporaryFile()
In...
What are valid values for the id attribute in HTML?
When creating the id attributes for HTML elements, what rules are there for the value?
23 Answers
...
Could not reserve enough space for object heap
...JVM with -XX:MaxHeapSize=512m (or any big number as you need) (or -Xmx512m for short)
share
|
improve this answer
|
follow
|
...
What is the 'override' keyword in C++ used for? [duplicate]
...verride { ... } // ERROR
};
In derived2 the compiler will issue an error for "changing the type". Without override, at most the compiler would give a warning for "you are hiding virtual method by same name".
share
...
GitHub pages are not updating
...
Nothing of this solved it for me. The solution was to edit the index.html file into GitHub website.
share
|
improve this answer
|
...
Building a minimal plugin architecture in Python
... the main app can poll and then use imp.load_module to pick up files, look for a well-known entry point possibly with module-level config params, and go from there. I use file-monitoring stuff for a certain amount of dynamism in which plugins are active, but that's a nice-to-have.
Of course, any re...
Fastest way to determine if an integer is between two integers (inclusive) with known sets of values
... a huge improvement are pretty remote. The code looks like:
// use a < for an inclusive lower bound and exclusive upper bound
// use <= for an inclusive lower bound and inclusive upper bound
// alternatively, if the upper bound is inclusive and you can pre-calculate
// upper-lower, simply ad...
Django Model - Case-insensitive Query / Filtering
....objects.filter(name__iexact=my_parameter)
There is even a way to use it for substring search:
MyClass.objects.filter(name__icontains=my_parameter)
There's a link to the documentation.
share
|
...
fs: how do I locate a parent folder?
...
Try this:
fs.readFile(__dirname + '/../../foo.bar');
Note the forward slash at the beginning of the relative path.
share
|
improve this answer
|
follow
...