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How to implement custom JsonConverter in JSON.NET to deserialize a List of base class objects?
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Using the standard CustomCreationConverter, I was struggling to work how to generate the correct type (Person or Employee), because in order to determine this you need to analyse the JSON and there is no built in way to do this using the...
What is the easiest way to push an element to the beginning of the array?
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Prepends objects to the front of self, moving other elements upwards.
And in use:
irb>> a = [ 0, 1, 2]
=> [0, 1, 2]
irb>> a.unshift('x')
=> ["x", 0, 1, 2]
irb>> a.inspect
=> "["x", 0, 1, 2]"
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How do I reword the very first git commit message?
...ointing to a specific commit)
This way, the first commit is also included and you can just reword it like any other commit.
The --root option was introduced in Git v1.7.12 (2012). Before then the only option was to use filter-branch or --amend, which is typically harder to do.
Note: see also this...
Python: try statement in a single line
... in Python, like you would in some other dynamic languages. The safer way (and the prevailing style) is to set all variables to something. If they might not get set, set them to None first (or 0 or '' or something if it is more applicable.)
If you do assign all the names you are interested in fir...
How does Apple know you are using private API?
...es the app has linked to. Something clearly you should not use, like IOKit and WebKit can be detected by this.
2. nm -u
This will list all linked symbols. This can detect
Undocumented C functions such as _UIImageWithName;
Objective-C classes such as UIProgressHUD
Ivars such as UITouch._phase (wh...
Code for Greatest Common Divisor in Python [closed]
The greatest common divisor (GCD) of a and b is the largest number that divides both of them with no remainder.
20 Answers
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what is the unsigned datatype?
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unsigned really is a shorthand for unsigned int, and so defined in standard C.
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Is it possible to Pivot data using LINQ?
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GroupBy in Linq does not work the same as SQL. In SQL, you get the key and aggregates (row/column shape). In Linq, you get the key and any elements as children of the key (hierarchical shape). To pivot, you must project the hierarchy back into a row/column form of your choosing.
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AndroidRuntime error: Parcel: unable to marshal value
...izable but is the Bottle class serializable? If not, it will not serialize and will throw errors at runtime.
Make the Bottle class implement the java.io.Serializable interface
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List all svn:externals recursively?
...here is an option in the TortoiseSVN installer to also install the SVN command line client. This option is not enabled by default.
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