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What does $_ mean in PowerShell?
...ich is called $PSItem in Powershell 3 and newer.
1,2,3 | %{ write-host $_ }
or
1,2,3 | %{ write-host $PSItem }
For example in the above code the %{} block is called for every value in the array. The $_ or $PSItem variable will contain the current value.
...
Django 1.7 - makemigrations not detecting changes
... out) listed in the documentation:
python manage.py makemigrations your_app_label
The documentation does not make it obvious that you need to add the app label to the command, as the first thing it tells you to do is python manage.py makemigrations which will fail. The initial migration is don...
JQuery to load Javascript file dynamically
...acks
return jQuery.ajax( options );
};
// Usage
$.cachedScript( "ajax/test.js" ).done(function( script, textStatus ) {
console.log( textStatus );
});
===
Or, if you want to disable caching globally, you can do so using ajaxSetup() as follows:
$.ajaxSetup({
cache: true
});
...
Gesture recognizer and button actions
... For broader use, consider some variant on Ramesh's or flypig's test clauses. In my case, for example, I ended up with the line: if ( [touch.view isKindOfClass:[UIControl class]] || [[touch.view superview] isKindOfClass:[UITableViewCell class]] ) {... Note that tableview cells get "touche...
Accessing Object Memory Address
When you call the object.__repr__() method in Python you get something like this back:
9 Answers
...
Can a dictionary be passed to django models on create?
...our model is called MyModel:
# create instance of model
m = MyModel(**data_dict)
# don't forget to save to database!
m.save()
As for your second question, the dictionary has to be the final argument. Again, extra and extra2 should be fields in the model.
m2 =MyModel(extra='hello', extra2='world'...
How do I flag a method as deprecated in Objective-C 2.0?
...x is provided to mark methods as deprecated:
@interface SomeClass
-method __attribute__((deprecated));
@end
or:
#include <AvailabilityMacros.h>
@interface SomeClass
-method DEPRECATED_ATTRIBUTE; // or some other deployment-target-specific macro
@end
...
Get Root Directory Path of a PHP project
...
For PHP >= 5.3.0 try
PHP magic constants.
__DIR__
And make your path relative.
For PHP < 5.3.0 try
dirname(__FILE__)
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Create JSON object dynamically via JavaScript (Without concate strings)
...
JavaScript
var myObj = {
id: "c001",
name: "Hello Test"
}
Result(JSON)
{
"id": "c001",
"name": "Hello Test"
}
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How to change a module variable from another module?
...oo, not the actual value. Try to import bar.py directly with import bar in __init__.py and conduct your experiment there by setting bar.a = 1. This way, you will actually be modifying bar.__dict__['a'] which is the 'real' value of a in this context.
It's a little convoluted with three layers but ba...