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Representing graphs (data structure) in Python

...f._graph[node2].add(node1) def remove(self, node): """ Remove all references to node """ for n, cxns in self._graph.items(): # python3: items(); python2: iteritems() try: cxns.remove(node) except KeyError: pass tr...
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Conversion of a datetime2 data type to a datetime data type results out-of-range value

I've got a datatable with 5 columns, where a row is being filled with data then saved to the database via a transaction. 26...
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Which is faster: while(1) or while(2)?

... mov rbp, rsp .seh_setframe rbp, 0 sub rsp, 32 .seh_stackalloc 32 .seh_endprologue call __main .L2: jmp .L2 .seh_endproc .ident "GCC: (tdm64-2) 4.8.1" With -O1: .file "main.c" .intel_syntax noprefix .def __main; .scl 2; .type 32; .end...
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Patterns for handling batch operations in REST web services?

... or resource attributes. That is, update each markedAsRead attribute. Basically, instead of treating the attribute as part of each resource, you treat it as a bucket into which to put resources. One example was already posted. I adjusted it a little. POST /mail?markAsRead=true POSTDATA: ids=[0,1,2]...
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What do *args and **kwargs mean? [duplicate]

...r **kwargs as the last items in your function definition’s argument list allows that function to accept an arbitrary number of arguments and/or keyword arguments. For example, if you wanted to write a function that returned the sum of all its arguments, no matter how many you supply, you could wr...
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Can you find all classes in a package using reflection?

Is it possible to find all classes or interfaces in a given package? (Quickly looking at e.g. Package , it would seem like no.) ...
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How are feature_importances in RandomForestClassifier determined?

...d in [1] (often cited, but unfortunately rarely read...). It is sometimes called "gini importance" or "mean decrease impurity" and is defined as the total decrease in node impurity (weighted by the probability of reaching that node (which is approximated by the proportion of samples reaching that no...
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Calculating frames per second in a game

... mean the value of time that you calculated for the last frame. This way, all previous frames will be included, with the most recent frames weighted the most heavily. – j_random_hacker May 23 '13 at 20:37 ...
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How to run Node.js as a background process and never die?

... @L0j1k debatable, OP has demonstrated a level of understanding that litte further explanation is required for the accepted answer. – JFA Jun 3 '14 at 16:15 ...
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Override console.log(); for production [duplicate]

...p, groupCollapsed, groupEnd, info, log, markTimeline, profile, profileEnd, table, time, timeEnd, timeStamp, timeline, timelineEnd, trace, warn. – tomekwi Nov 12 '14 at 10:25 7 ...