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Create empty queryset by default in django form fields
...2':value2})
form.fields['field3'].queryset = YourModel.objects.filter('foo'=bar)
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How can I disable a button in a jQuery dialog from a function?
... You need to work around this method to disable the buttons. Use jQuery-foo to get the resultant dom elements off the page.
– Stefan Kendall
Jul 23 '10 at 14:12
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What is a “translation unit” in C++
.... The file-name isn't important at all. The content is. If the content of "foo.h" is "int main() { }" you can compile it.
– Johannes Schaub - litb
Jul 9 '09 at 21:11
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Does :before not work on img elements?
...mage, but not using an image tag — you have to use the content: url(/img/foo.jpg); syntax. See w3.org/TR/CSS21/generate.html for the details.
– coreyward
Apr 30 '11 at 18:44
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“Inspect” a hover element?
...
You can also do this in the javascript console:
$('#foo').trigger('mouseover');
An that will "freeze" the element in the "hover" state.
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Equivalent of .try() for a hash to avoid “undefined method” errors on nil? [duplicate]
...in C#, Groovy, and
Swift, is introduced to ease nil handling as obj&.foo. Array#dig and
Hash#dig are also added.
This means as of 2.3 below code
account.try(:owner).try(:address)
can be rewritten to
account&.owner&.address
However, one should be careful that & is not a dr...
What is the purpose of the “role” attribute in HTML?
...ers will apply the first recognized role in the token list.
<span role="foo link note bar">...</a>
Out of the list, only link and note are valid roles, and so the link role will be applied in the platform accessibility API because it comes first. If you use custom roles, make sure they ...
Classes vs. Modules in VB.NET
...teger) As Boolean
...
End Function
End Module
Class SomeClass
Sub Foo()
Dim hr = CallSomeHrMethod()
if Succeeded(hr) then
..
End If
End Sub
End Class
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In Java 8 how do I transform a Map to another Map using a lambda?
...<String, Column> original = new HashMap<>();
original.put("foo", new Column());
original.put("bar", new Column());
Map<String, Column> copy = original.entrySet()
.stream()
.collect(Collectors.toMap(Map.Entry::getKey,
e ...
Path.Combine for URLs?
.... Request.ApplicationPath is '/' if your application is at the root, but '/foo' if it's not.
– nickd
Mar 25 '11 at 16:44
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