[Solved] Is there an efficient method to check for 8 successive elements that are not NA (i.e. is.na()==FALSE) in each column of a large dataset?

[ad_1] The following code does what the question asks for. The function that does all the work is append_one. It Creates a vector Y repeating the prefix length(x) times. Gets the runs of vector y. Cleans the runs’ values to the empty string “” if the runs’ lengths are less than N. Reverses the run-length … Read more

[Solved] What does mean this return

[ad_1] You got 3 ways to write a function which are effectively doing the same thing. They are all assigning _p with the value of p if the value of p is not negative. (void) in your function says that it is not going to return anything. Therefore the return; is not doing anything but … Read more

[Solved] What is the best approuch to create a single page application React JS? [closed]

[ad_1] You can inject some components in React in other framework or web page but if you build a ReactJS application, it’s basically a single page application. In your application you will have to use a router like: React router : https://github.com/ReactTraining/react-router React redux router : https://github.com/reactjs/react-router-redux There are many other, but those are good … Read more

[Solved] How to optimize redundant code in c#?

[ad_1] It is not possible to put generic constraint about specific constructor availabilty, so you cannot guarantee inside the method that TDal _dal = new TDal(_connectionString); is possible. I would refactor it then to provide dal externally: public List<TRule> getData<TRule>(TRule perRA, IDal<TRule> dalRA, int acao) { List<TRule> list = new List<TRule>(); try { list = … Read more

[Solved] Ineer Join query with where in scala slick

[ad_1] For inner join you could use slick applicative-join with filter clause. For example: val query = for { (address, userAddressMapping) <- Address join UserAddressMapping on (_.id === _.addressId) if userAddressMapping.userId === 1 } yield (address.id, address.name) dbConfig.run(query.result) 12 [ad_2] solved Ineer Join query with where in scala slick

[Solved] what is the method equivalent to push_back (C++) in java?

[ad_1] Answering the question in the title line: If you use java.util.Vector<E>, then it is addElement. Those would be the closest-match class and method in Java to the C++ template classes that you mentioned in your question. Docs are here: https://docs.oracle.com/javase/8/docs/api/java/util/Vector.html#addElement-E- 2 [ad_2] solved what is the method equivalent to push_back (C++) in java?

[Solved] segmentation fault filing sleep function

[ad_1] The else branch of the if(fsize==0) conditional in csvwrite() does not fclose(fe). There is a limit on the number of files that can be opened by any one process at once; if you call this enough times, you’ll hit the limit, and the next fopen() will return NULL (and errno will be set to … Read more

[Solved] error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘:’ token

[ad_1] You are trying to compile C++ code as C. C and C++ are different languages, and your C compiler is complaining about C++-specific syntax. Try compiling the code as C++. For most compilers it should be sufficient to rename your file main.cpp. 1 [ad_2] solved error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before … Read more