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In Django, how does one filter a QuerySet with dynamic field lookups?
...'s argument expansion may be used to solve this problem:
kwargs = {
'{0}__{1}'.format('name', 'startswith'): 'A',
'{0}__{1}'.format('name', 'endswith'): 'Z'
}
Person.objects.filter(**kwargs)
This is a very common and useful Python idiom.
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How to insert an item into an array at a specific index (JavaScript)?
...want is the splice function on the native array object.
arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert).
In this example we will create an array and add an element to it into index 2:
var arr = [];
arr[0] = "...
64-bit version of Boost for 64-bit windows
Is there a version of 64-bit Boost library for VS2008 ?
Or do I have to compile one myself? if, so, does anyone have experience with it?
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URL-parameters and logic in Django class-based views (TemplateView)
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answered Apr 2 '13 at 1:09
NgenatorNgenator
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How to round an average to 2 decimal places in PostgreSQL?
...For example:
regress=> SELECT to_char(float8 '3.1415927', 'FM999999999.00');
to_char
---------------
3.14
(1 row)
to_char will round numbers for you as part of formatting. The FM prefix tells to_char that you don't want any padding with leading spaces.
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解决：CTreeCtrl控件SetCheck无效的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...OnInitDialog中添加如下两句代码m_tree.ModifyStyle( TVS_CHECKBOXES, 0 );m_tree.ModifyStyle( 0, TVS_CHEC...解决方法：SetCheck之前或OnInitDialog中添加如下两句代码
m_tree.ModifyStyle( TVS_CHECKBOXES, 0 );
m_tree.ModifyStyle( 0, TVS_CHECKBOXES );
m_tree.SetCheck(hItem, TRUE);
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Does Entity Framework Code First support stored procedures?
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answered Jan 30 '11 at 21:15
anonanon
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How can I make Visual Studio's build be very verbose?
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edited Jan 10 '18 at 22:46
Peter Mortensen
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How to use Bash to create a folder if it doesn't already exist?
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First, in bash "[" is just a command, which expects string "]" as a last argument, so the whites...
Java associative-array
...<Map<String, String>> data = new ArrayList<>();
data.add(0, map);
data.get(0).get("name");
See the official documentation for more information
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