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In a django model custom save() method, how should you identify a new object?
...uniqueness constraints on fields other than the id (e.g., secondary unique indexes on other fields). In that case, you could still have a new record in hand, but be unable to save it.
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improv...
How To Create Table with Identity Column
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CONSTRAINT [PK_History] PRIMARY KEY CLUSTERED
(
[ID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
) ON [PRIMARY]
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C#: Printing all properties of an object [duplicate]
.../… - this handles more complex objects, including recursion depth, skips indexers and properties without getters, and avoids unnecessary calls to StringBuiler ToString. It also changes the 'bidirectional reference' message to 'reference already dumped', as a reference found in the hashtable is not...
GSON throwing “Expected BEGIN_OBJECT but was BEGIN_ARRAY”?
...pe. You can't just try and cast the result like that and expect it to magically work ;)
The User guide for Gson Explains how to deal with this:
https://github.com/google/gson/blob/master/UserGuide.md
This will work:
ChannelSearchEnum[] enums = gson.fromJson(yourJson, ChannelSearchEnum[].class);
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NoSql Crash Course/Tutorial [closed]
...our example seems like it would be inefficient in a big DB. Can the server index on doc type or be smart about the keys it uses and index on the keys? Like keys could be user1, user2, etc.
– Jess
Mar 30 '13 at 4:21
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End of support for python 2.7?
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@Basic welll... that share is pretty slim: 25 over all python versions (4% code exec): cvedetails.com/product/18230/Python-Python.html?vendor_id=10210 vs php with 408 (27% code exec): cvedetails.com/product/128/PHP-PHP.html?vendor_id=74 or Java with 438 (3% code exec): cvede...
How to find if an array contains a specific string in JavaScript/jQuery? [duplicate]
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var myarr = ["I", "like", "turtles"];
var arraycontainsturtles = (myarr.indexOf("turtles") > -1);
Hint: indexOf returns a number, representing the position where the specified searchvalue occurs for the first time, or -1 if it never
occurs
or
function arrayContains(needle, arrhaystac...
Is there a way to chain multiple value converters in XAML?
... {
if (_parameters == null)
return null;
var index = IndexOf(converter as IValueConverter);
string parameter;
try
{
parameter = _parameters[index];
}
catch (IndexOutOfRangeException ex)
{
paramete...
CSS background opacity with rgba not working in IE 8
...tydot), and which matches the transparency of your background.
EDIT : to fall back for IE6+ support, you can specify bkgd chunk for the png, this is a color which will replace the true alpha transparency if it is not supported. You can fix it with gimp eg.
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Access object child properties using a dot notation string [duplicate]
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//-> 99
Although there are answers that extend this to "allow" array index access, that's not really necessary as you can just specify numerical indexes using dot notation with this method:
getDescendantProp({ a: [ 1, 2, 3 ] }, 'a.2');
//-> 3
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