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Python None comparison: should I use “is” or ==?
...t to check equality (e.g. Is var equal to 3?).
Explanation:
You can have custom classes where my_var == None will return True
e.g:
class Negator(object):
def __eq__(self,other):
return not other
thing = Negator()
print thing == None #True
print thing is None #False
is checks...
Disable click outside of bootstrap modal area to close modal
...ng a bootstrap website, with a couple of Bootstrap 'Modals'.
I'm trying to customize some of the default features.
20 Answe...
How to view corresponding SQL query of the Django ORM's queryset?
... = Model.objects.filter(name='test')
print qs.query
Edit
I've also used custom template tags (as outlined in this snippet) to inject the queries in the scope of a single request as HTML comments.
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Concat all strings inside a List using LINQ
...>:
string.Join(delimiter, list.ToArray());
And this is for a list of custom objects:
string.Join(delimiter, list.Select(i => i.Boo).ToArray());
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Int or Number DataType for DataAnnotation validation attribute
... works on server side as well as with jquery validation unobtrusive with a custom error message just like any other attribute:
The attribute:
[AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = false)]
public class MustBeIntegerAttribute : ValidationAttribute, IClient...
Why use def main()? [duplicate]
...eans you can call main() from other scripts (or interactive shell) passing custom parameters. This might be useful in unit tests, or when batch-processing. But remember that the code above will require parsing of argv, thus maybe it would be better to use a different call that pass parameters alread...
How to read a text file into a string variable and strip newlines?
... @J.C can you explain the problem ? Is this just a question of custom or does the with ... as statement bring something ?
– Titou
May 5 '17 at 12:08
4
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Your content must have a ListView whose id attribute is 'android.R.id.list'
...must specify the keyword android while mentioning to a ID.
If you need a custom ListView then instead of Extending a ListActivity, you have to simply extend an Activity and should have the same id without the keyword android.
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How should a model be structured in MVC? [closed]
...n abstraction of persistence, on the most flexible approaches is to create custom data mappers.
From: PoEAA book
In practice they are implemented for interaction with specific classes or superclasses. Lets say you have Customer and Admin in your code (both inheriting from a User superclass). Bo...
django import error - No module named core.management
...
As known this was a path issue.
the base of my custom packages shared a name with a directory set in a /etc/profile. The packages were in a different location however for the webserver. So I removed the offending entries from my $PYTHONPATH and was good to go!
Thanks for...