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How to implement custom JsonConverter in JSON.NET to deserialize a List of base class objects?
...verter class), passing in the JObject instance.
This JObject instance can then be analysed to determine the correct type by checking existence of certain fields.
Example
string json = "[{
\"Department\": \"Department1\",
\"JobTitle\": \"JobTitle1\",
\"FirstName\": \"FirstN...
deciding among subprocess, multiprocessing, and thread in Python?
....
Thus the Twisted programming model is built around handling these events then looping on the resulting "main" handler, allowing it to dispatch the events to your handlers.
I personally think of the name, Twisted as evocative of the programming model ... since your approach to the problem must be, ...
What is the (best) way to manage permissions for Docker shared volumes?
...
docker run -ti --rm --volumes-from=graphitedata some/graphitetools
and then vi /data/graphite/whatever.txt. This works perfectly because all the containers have the same graphite user with matching uid/gid.
Since you never mount /data/graphite from the host, you don't care how the host uid/gid ...
Can I make a function available in every controller in angular?
...erent controllers. I will have to specify this 'myService' dependency and then $scope.callFoo scope property in all ten of them. This is simply a repetition and somehow violates the DRY principle.
Whereas, if I use the $rootScope approach, I specify this global function gobalFoo only once and it ...
dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
...lution:
First make grouped df
by_b <- tbl_df(df) %>% group_by(b)
then we summarise those levels that occur by counting with n()
res <- by_b %>% summarise( count_a = n() )
then we merge our results into a data frame that contains all factor levels:
expanded_res <- left_join(exp...
Using -performSelector: vs. just calling the method
...result of findTheAppropriateSelectorForTheCurrentSituation() to aSelector, then invoke [anObject performSelector:aSelector]. @selector produces a SEL.
– Daniel Yankowsky
Sep 29 '09 at 16:59
...
Difference between Grunt, NPM and Bower ( package.json vs bower.json )
...re does this package belong to. If it is a node module(like grunt,request) then it will go in package.json otherwise into bower json.
Question-2
When should I ever install packages explicitly like that without adding them to the file that manages dependencies
It does not matter whether you ar...
The static keyword and its various uses in C++
...nd:
If it's in a namespace scope (i.e. outside of functions and classes), then it can't be accessed from any other translation unit. This is known as "internal linkage" or "static storage duration". (Don't do this in headers except for constexpr. Anything else, and you end up with a separate varia...
What does “program to interfaces, not implementations” mean?
...ch as they like.
If, as a programmer, you code against the implementation then as soon as it changes your code stops working. So think of the benefits of the interface this way:
it hides the things you do not need to know making the object simpler to use.
it provides the contract of how the objec...
Why should C++ programmers minimize use of 'new'?
...ine class as a building block:
class Table
{
Line borders[4];
};
Then
int main ()
{
Table table;
}
allocates four std::string instances, four Line instances, one Table instance and all the string's contents and everything is freed automagically.
...