ticketmap | increasingly common scenario | SQL Database library
kandi X-RAY | ticketmap Summary
kandi X-RAY | ticketmap Summary
it has been an increasingly common scenario that i've encountered where you have some id that's monotonically increasing, such as a subscription or connection index, or user id, and you need your c++ program to hold some data that's associated with that id value. the program can then pass round the id, and use that id to access the associated data at a later point. over time, ids can become invalidated, so the data associated with that value is removed, and you end up with a sparse set of currently-active ids. you would therefore naturally lean towards using a map (whether a std::map, std::unordered_map or some other custom map) to associate the data with the id. often such maps are implemented as node-based containers, which means that the nodes can be allocated at disparate memory addresses, which is bad for cache performance. adding and removing nodes also
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QUESTION
I am implementing some generic scheduling in an Actor with a need to manage a set of ids for each item scheduled. So I came up with the following trait to implement it:
...ANSWER
Answered 2020-Jul-28 at 16:36From examining the stack trace I was able to infer that the problem stems from the method drop(), specifically the line:
QUESTION
How can I convert this query back to eloquent. I made this for my testing because I can't get the result on my original laravel query so I tried testing directly to database. Now my problem is I wrapped my query in select and group to get what result I needed
...ANSWER
Answered 2018-Mar-04 at 19:37For advance query but doesn't need any loop within that stored proc will be your last resort. You can do a VIEW TABLE then create a model for that. Instead of doing a 'whereRaw' in your code.
QUESTION
C = {'hello', 'goodbye', 'hola', 'hello hellen', 'helmet', 'hellorheaven', 'hillsboro', 'say hello', 'myfellow'}
defaultval = 100
key = {'hello', 'goodbye', 'hola', 'hello hellen', 'helmet', 'hellorheaven', 'hillsboro', 'say hello', 'myfellow'}
value = [defaultval, defaultval, defaultval,defaultval,defaultval,defaultval,defaultval,defaultval,defaultval]
mapObj = containers.Map(key,value )
for n = 1:length(C)
d1 = strdist('goodfellow', C(n) )
disp(C(n) )
disp(mapObj('hello' ) )
mapObj(C(n) ) = d1
end
ANSWER
Answered 2018-Jan-23 at 21:39As @excaza pointed out in his comment, the problem is all about indexing. Using round parentheses, you retrieve a cell. But your dictionary key is actually typed as string (to be exact, a char array). In order to extract the a char array from your cell array, you have to use curly braces. For more information about accessing data in cells, read this documentation.
QUESTION
I have a JSON document pulled back from a support system API. With my code, I want to pull out the pre-configured fields dynamically, presuming that the JSON may have more or fewer of the desired fields when my program calls the API.
I have some code that works, though it seems very convoluted and inefficient.
Here is a snippet of the pieces of JSON that I'm interested in:
...ANSWER
Answered 2017-Dec-13 at 02:30I don't know if you still need this code but why not try something like this. Have a translation map and run each row through it.
QUESTION
I have class
...ANSWER
Answered 2017-Apr-30 at 20:05The syntax of your query is not correct :
QUESTION
I am attempting to associate strings with numbers in MATLAB. That is, I want to create an object that takes the form
...ANSWER
Answered 2017-Mar-10 at 21:28I suppose the best solution is building two maps, one map from ticket to name, and one map from name to ticket.
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