Dear all, I'm reading in serial data using Pyserial, to populate a list of 17 values (1byte each) at a sampling rate of 256Hz. The bytes I ultimately want to use are the 5th to 8th in the list. Providing no bytes are dropped, the first two values of the stream are always the same ('165','90'). I'm getting quite a few dropped values th...
Hi, I have two files and the content is as follows: Please only consider the bolded column and the red column. The remaining text is junk and unnecessary. As evident from the two files they are similar in many ways. I am trying to compare the bolded text in file_1 and file_2 (it is not bolded but hope you can make out it is the sam...
I have one list that I want to take a slice of, reverse that slice and append each of those items onto the end of another list. The following are the options I have thought of (although if you have others please share), which of these is the most pythonic? # Option 1 tmp = color[-bits:] tmp.reverse() my_list.extend(tmp) # Option 2 my_...
Okay, my last prolog question. It's the common geneaology problem. I am suppose to take a list of facts and have a function called descendant that will return a list that has all the descendants. For example: Given the rules: parent('Bob', 'Tim'). parent('Joe', 'Bob'). The function call: descendant('Joe', X). should re...
This works perfectly if the priobann list is populated: banns << priobann?.pop() However, if it's empty, I get the exception: java.util.NoSuchElementException: Cannot pop() an empty List Shouldn't the question mark after priobann avoid this exception ? ...
I have a LaTeX document which is basically one big enumerate environment, with a few hundreds of items. I want to be able to issue a command like \printitems{2,5,12,45-48} which will output only the requested items. A similar command \onlyslides is a part of slides.cls, but I cannot figure out what goes on there and adapt it to my ne...
I've got this code: def __parse(self): for line in self.lines: r = Record(line) self.records[len(self.records):] = [r] print self.records[len(self.records)-1].getValue() # Works fine! print self.record[0].getValue() # Gives the same as print self.record[1].getValue() # as # ... and so on ....
Hi, I am working on a simulation. For this simulation I need 20 nodes (static) and then each node has a queue associated with it. This queue could hold any number of values. What would be the best way to implement this in C? I was aiming at having each of the queues being a simple linked list, but how can I effectively create several qu...
I guess another way to phrase this would be "Is there a class like List<> in C#, but optimized for checking whether a particular value is present?" I'm sure for a small set of values List<>.Contains would probably be fine, but what if I have a set of thousands or millions of values and wanted to find out whether a certain value was in it...
Many people and authors suggested to us to use list than array. List <Integer> list = new ArrayList<Integer>(); list.addElement(1); .... What it is the reason behind it? ...
Hello everyone I am sorry if this question has been answered already. Also, this is my first time on stackoverflow. I have a beginner R question concerning lists , data frames and merge and/or rbind. I started with a Panel that looks like this COUNTRY YEAR VAR A 1 A 2 B 1 B 2 For efficiency purpos...
I have 3 tables: CustomerType CusID EventType EventTypeID CustomerEventType CusID EventTypeID How to create an event type with the selected customer type using checkbox list using LINQ to SQL and VB.NET? dim newEventType = new EventType newEventType.EventID = 1 db.EventType.InsertOnSubmit(newEventType) db.submitchange() Then I ...
So basically, if I have a (finite or infinite) list of (finite or infinite) lists of strings, is it possible to sort the list by length first and then by lexicographic order, excluding duplicates? A sample input/output would be: Input: [["a", "b",...], ["a", "aa", "aaa"], ["b", "bb", "bbb",...], ...] Output: ["a", "b", "aa", "bb", "a...
See http://cssfingerprint.com/about#stats. See also http://stackoverflow.com/questions/933645/multi-column-css-lists. I want a multi-column list that: uses no JS reflows on window size makes as many columns as fit the enclosing element therefore, does not require batching the list into manual column groups works in all browsers w...
I am working on an algorithm, and I need to be able to pass in a List and see if there are four numbers in a row at any point in the list. I have been struggling with an easy way to do this... Here is the basic idea.. I would like the fourNumbersInARow() method to return true: import java.util.ArrayList; import java.util.List; import j...
I'm writing an adapter framework where I need to convert a list of objects from one class to another. I can iterate through the source list to do this as in http://stackoverflow.com/questions/18524/java-best-way-of-converting-listinteger-to-liststring However, I'm wondering if there is a way to do this on the fly when the target list ...
ENVIRONMENT: C# I have a table of equivalent values, like this: CHEVR = CHEVROLET MERCE = MERCEDES ALFA = ALFA ROMEO [...] I have this data in a tab delimited file. I also have a table with about 15M rows, which contains informations about car parts. One of these is the first row from the equivalent values table (CHEVR, MERCE, ALFA,...
I want to add colections to List, but only if Advertisements does not already exist in it. I know that HashSet works like this that has no duplicate values, but with HashSet i can not use AddRange and GetRange. So is it possible to simulate List like hashSet? List<Advertisements> advertisements = new List<Advertisements>(); advertisem...
I am trying to do this: List<Parent> test = new List<Child>(); The complete code of my class is this: class Program { public static void Main(string[] args) { List<Parent> test = new List<Child>(); test.Add(new Child()); test.Add(new AnotherChild()); } } class Parent { } class Child : Parent { ...
I'm trying to use list in c++, but I get the following error: 1>error C2143: syntax error : missing ';' before '<' 1>error C4430: missing type specifier int assumed. Note: C++ does not support default-int 1>error C2238: unexpected token(s) preceding ';' With the following code: #pragma once #include "Includes.h" class ...