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Passing parameters to a Bash function
...on myBackupFunction() {
# here $1 is the first parameter, $2 the second etc.
}
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Cross-Origin Request Headers(CORS) with PHP headers
...NTROL_REQUEST_METHOD']))
// may also be using PUT, PATCH, HEAD etc
header("Access-Control-Allow-Methods: GET, POST, OPTIONS");
if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']))
header("Access-Control-Allow-Headers: {$_SERVER['HTTP_ACCES...
What is the best way to give a C# auto-property an initial value?
... okay to use some kind of il-weaving with such attribute (PostSharp, Fody, etc), but the performance...
– Grigory
Aug 21 '13 at 13:03
1
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Is generator.next() visible in Python 3?
... special attributes that have gotten this fix; func_name, is now __name__, etc.
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REST vs JSON-RPC? [closed]
...ocedure signatures(number of arguments, order of arguments, argument types etc...) on server side without breaking client implementations;
RPC style doesn't expose anything but procedure endpoints + procedure arguments. It's impossible for client to determine what can be done next.
On the other ha...
What is a callback function?
...method is called (whatever condition, such as a button click, a timer tick etc) and its method body completes, the callback function is then invoked.
Some languages support constructs where multiple callback function arguments are supported, and are called based on how the parent function completes...
How do you do Impersonation in .NET?
...e System.Security.Principal namespace:
Newer code (.NET 4.6+, .NET Core, etc.) should generally use WindowsIdentity.RunImpersonated, which accepts a handle to the token of the user account, and then either an Action or Func<T> for the code to execute.
WindowsIdentity.RunImpersonated(tokenHa...
How do I see what character set a MySQL database / table / column is?
...probably also need to check connection character_set, client_character_set etc... : SHOW VARIABLES LIKE 'character_set%'; SHOW VARIABLES LIKE 'collation%';
– BenL
Feb 6 '15 at 9:54
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Principal component analysis in Python
... def pc( self ):
""" e.g. 1000 x 2 U[:, :npc] * d[:npc], to plot etc. """
n = self.npc
return self.U[:, :n] * self.d[:n]
# These 1-line methods may not be worth the bother;
# then use U d Vt directly --
def vars_pc( self, x ):
n = self.npc
retu...
Rails 3.1: Engine vs. Mountable App
... gem in Gemfile is enough for the parent app to inherit the models, routes etc. The engine routes are specified as:
# my_engine/config/routes.rb
Rails.application.routes.draw do
# whatever
end
No namespacing of models, controllers, etc. These are immediately
accessible to the parent app...