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Why is it common to put CSRF prevention tokens in cookies?
...truct JQuery to supply a X-CSRF-TOKEN header in each AJAX call.
The main "index" page contains this JavaScript snippet:
// Intialize global variable CSRF_TOKEN to empty sting.
// This variable is set after a succesful login
window.CSRF_TOKEN = '';
// the supplied callback to .ajaxSend() is calle...
What are some uses of decltype(auto)?
...code
For non-generic code, like the initial example you gave, you can manually select to get a reference as a return type:
auto const& Example(int const& i)
{
return i;
}
but in generic code you want to be able to perfectly forward a return type without knowing whether you are dea...
Where to define custom error types in Ruby and/or Rails?
... error types in a Ruby library (gem) or Ruby on Rails application? Specifically:
5 Answers
...
How to create an object for a Django model with a many to many field?
...
For future visitors, you can create an object and all of its m2m objects in 2 queries using the new bulk_create in django 1.4. Note that this is only usable if you don't require any pre or post-processing on the data with save() methods or signals. What you insert is exactly...
Is it possible to await an event instead of another async method?
...kCompletionSource<object> continueClicked;
private async void Button_Click_1(object sender, RoutedEventArgs e)
{
// Note: You probably want to disable this button while "in progress" so the
// user can't click it twice.
await GetResults();
// And re-enable the button here, possibly ...
WPF OpenFileDialog with the MVVM pattern? [duplicate]
...ou would consume it.
public MyViewModel : ViewModel
{
private string _selectedPath;
public string SelectedPath
{
get { return _selectedPath; }
set { _selectedPath = value; OnPropertyChanged("SelectedPath"); }
}
private RelayCommand _openCommand;
pu...
二维码生成使用指导 · App Inventor 2 中文网
...CARD 格式，扫码后手机会提示「添加联系人」：
when 按钮_生成名片.Click() {
二维码生成1.GenerateQRCode(join("MECARD:N:", 文本输入框_姓名.Text, ";TEL:", 文本输入框_电话.Text, ";EMAIL:", 文本输入框_邮箱.Text, ";;"), 垂直布局_二维码)
}
...
How can I check if an ip is in a network in Python?
...
Additionally, struct.unpack('L',socket.inet_aton(ip))[0] will fail on architectures where 'L' unpacks to something different than 4 bytes, regardless of endianness.
– Rafał Dowgird
May 4 '09 at...
Python: One Try Multiple Except
...n) as e:
handle_either_of_3rd_4th_or_5th()
except Exception:
handle_all_other_exceptions()
See: http://docs.python.org/tutorial/errors.html
The "as" keyword is used to assign the error to a variable so that the error can be investigated more thoroughly later on in the code. Also note that...
How does Access-Control-Allow-Origin header work?
...t using this header for POST and GET requests. I had accidently opened the index.html file directly from disk, so the URL the client was accessing on node.js was thought to be cross-domain, while it was simply running on localhost. Accessing via the URL (as one would usually do) "solved" my issue......