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Julia: How to obtain the Array pointed at by pointer?

a = [1,2,3] ap = pointer(ap) Suppose, I am only given ap, how do I get back a Vector{Int} that the pointer AP was pointing at without using unsafe_load?

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I’m trying to select a random string to populate individual labels whilst removing the selected one each time

I am trying to reuse a piece of code which works perfectly for multiline strings in one of my published apps but I can’t figure out why it’s different and doesn’t work for this project. It doesn’t seem to be because of the different labels or the time delayed action but I could be wrong. […]

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How do I convert a long into a char[] array in java?

I’m trying to convert a long into a char array[] in java. say you have 1125. the char array should look like this: char[] numArray = {1, 1, 2, 5,….}; with numArray being 1000 in length

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How can I insert subtype values in sql oracle?

I am very new to Object-Relational Databases and Oracle and am trying to insert Subtype values into a table. I am unsure whether it is a syntax error when creating the tables or when inserting them so any help would be great. It’s a music database and have been instructed that there must be 2 […]

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Keras predict() returns a better accuracy than evaluate()

I set up a model with Keras, then I trained it on a dataset of 3 records and finally I tested the resulting model with evaluate() and predict(), using the same test set for both functions (the test set has 100 records and it doesn’t have any record of the training set, as much as […]

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Filter data.table by condition, but keeping at least one row per N rows

Let’s say I have this trivial data.table: library(data.table) dt <- data.table( day = 1:10, a = c(0, 1, 10, 2, 2.5, 2.3, 2.7, 2.9, 5, 8) ) And I want to filter it according to some condition on a. In this case, the moments where a changes by more than 3. That much is trivial: […]

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How to fill missings in paneldata grouped by unit and time?

I have panel data. In questionnaires (presumbly non-changing) data is sometimes not asked in each wave. A good example is gender. Let’s assume I have data of a person for 3 periods, but only observed the gender once. It can be in any period. Missings are at random, they can be anywhere in the column. […]

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Maintaining PriorityQueue insertion order incase of equal priority

I am using a priorityQueue to implement BFS. I want to maintain the insertion order in the case of equal priority while inserting and also after poping. I overrode the equals method as shown below and the insertion order is maintained as expected while inserting. But, once I do a remove or poll, the order […]

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How to efficiently generate a unique combination of first and last name given an array of full names

I’m having a bit of difficulty with a problem I’m having. I have an array of names like so: [Brutananadilewski, Carl] [Crews, Xander] [Cartman, Eric] [Rubio, Daniel] [Daniels, Julie] etc. etc. What I need to do is to create a list of unique names from this list without having first and last names repeated. So […]

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Call scala method from object dynamically

I have a scala case class and object like below, case class User(userId: Long, UserName: String, ts: Timestamp) object User { def getRdd(rdd: RDD[JsValue], type : String): RDD[User] = { val rdd1: RDD[User] = rdd.map(doc => processEvent(doc)) .filter(event => event._1.equals(rddType)).map(event => { User.get_class_obj(event) }) rdd1 } } I want to call “getRdd” method of User […]