int - Space required for integer and float data types in InfluxDB

I need to find a theoretical size of each record inserted into InfluxDB. Supposing I have 10 integer fields and 30 float fields, then how much space should it theoretically require, disregarding tags and compression?I have read that float and integer take up one word, which will be 64 bits on a 64 bit system, but I am doubtful, after reading this open issue ( you!...Read more

int - Why do elixir guides say to use quote and unquote inside of a macro definition

I have just started learning about macros in elixir. I am currently reading the metaprogramming-elixir book.Right at the start of the book there is an example of how to create a macro called say. This macro will take an expression like 5 + 5 and return a string of "5 plus 5 is 10"...defmacro say({:+, _, [lhs, rhs]}) do quote do lhs = unquote(lhs) rhs = unquote(rhs) result = lhs + rhs IO.puts "#{lhs} plus #{rhs} is #{result}" result endendI am wondering why we need to use the quote and unquote macros when we are defining our own...Read more

cucumber - How can I use an int value as scenario outline examples

I want to use an int as a parameter in my step, but using scenario outline examples, so for code:And Skill Pop Up: Add new skill <skill name> with rate <rate> Examples: | skill name | rate | | java | 1 |should be: @And("^(.+): Add new skill (.+) with rate (\\d+)$")But unfortunately it has to be "(.+)", in other ways step is undefined.Is it possible to use integer in scenario outlines?...Read more

int - Creating a vector of ambiguous type, or escaping variable scope?

I've been given an assignment for a C++ class (heh), which states that I must write a program to perform a certain operation on a vector of data. The data can be either int type or double type. The program must first ask the user which type will be used, and then declare the appropriate vector, and use it for the rest of the program. I was thinking something along these lines:// Determine type of data valuescout << "What type of values: Int (1), or Double (2)?" << endl << "Type: ";int entry;cin >> entry;cin.ignore();...Read more

int - How do I get machine-sized integer for FFI?

In dealing with foreign code, I have to take pointers to a C struct of the formtypedef struct { int two; int nd; char typekind; ... } PyArrayInterface;Obviously the size of int is unknown. How do I represent this struct in rust? It's probably i32, but I might run across an ILP64 data model some day... At this point my only idea is to create an enum to wrap the struct, check the architecture at runtime, and do the right thing. It's pretty goofy to have an if statement and a transmute each time I need to get the struct from C,...Read more

multiplying - C program multiply the int values of an array

I'm working on an exercise about arrays and multiplying the values of the arrays. But it contains some errors and the problem is, I don't know what to change. Any help would be much appreciated with this problem.The given code:#include <stdio.h>#include <stdlib.h>void main(void) { int i, j ; int Data[15] ; for(i=1;i<=15;i++) Data[i]=i*i ;}The exercise:1. It contains a big error. Fix it!2. There are two other things not entirely correct. What are they? (Hint: one is usually detected as a warning by the compiler, a...Read more

int - In Elixir, how can I take a list of Strings ["3", "4", "-2", "20", "false"] as params for a function def linear(m,c,min,max,_)

I have an Elixir function such as:def linear(m,c,min,max,_) when someCondition do something endI have a list of Strings: ["3", "4", "-2", "20", "false"]How can I transform this list into [3,4,-2,20,false] so that I can do:desiredFormat |> linear() or similar. Using String.to_atom(head) would work for "false" and using:String.to_integer(head) would work for the the strings that are integers but I cannot find a solution for a 'mixed' list like this.I hope this makes sense. Thanks...Read more

int - Rounding Truncation

Rounding (truncation) of long decimal numbers (must again be a float!)Use only int() and float(), * and/or / but don't use round()this is what I have so far x = (int(9.275))print(x * ???)x = (float(9.275))print(x * ???)first one needs to be rounded to 9.2second one needs to be rounded to 9.27How can I round these using * and or / and not use the round function?...Read more

int - Using bitwise operations to implement absolute value

I'm trying to make an int array that takes in doubles from a double array, truncates the values into ints by casting, and then using bitwise operations to get the absolute value of the ints. Here's what I've got so far: int int_array[20]; int o; for(o = 0; o<20; o++){ int currentNum = (int) f_array[o]; //Now use bitwise operations to get abs int num = currentNum; int y = currentNum >>31; currentNum = (num ^ y) - y; int_array[i] = currentNum; }I used a print st...Read more

boolean - Using fold to check if a list is divisible by an int and return bool list ocaml

I am trying to implement a function which takes in an int and a list of numbers, and check if all elements of the list is divisible by the int, for example:div_by_x 2 [1;3;4;8;0] = [false;false;true;true;true]I have a helper function which just returns true or false when viable: let divisible x i = if i mod x = 0 then true else false;; With that, I have already implemented a working recursive div function, which is: let rec div_by_x x y = match y with [] -> [] | (hd :: tl) -> let l1 = div_by_x x tl in divisible x hd :: l...Read more

int - Lc3: How do I compare two values?

I am trying to write an lc3 assembly language problem but I am pretty stuck. The program must take in two digits and output which digit is larger. I am required to use a subroutine to accomplish this.Now, I am putting the first digit in r1, the second digit in r3, and i have to put the output in r0. I am really confused as to how I should compare these 2 values, any advice would be appreciated!.ORIG X3000;********************MAIN***********************LEA R0, IN_STR ;DISPLAYS STRINGPUTS GETC ;INPUT NUM1OUT...Read more

Difference between Objective-C primitive numbers

What is the difference between objective-c C primitive numbers? I know what they are and how to use them (somewhat), but I'm not sure what the capabilities and uses of each one is. Could anyone clear up which ones are best for some scenarios and not others?intfloatdoublelongshortWhat can I store with each one? I know that some can store more precise numbers and some can only store whole numbers. Say for example I wanted to store a latitude (possibly retrieved from a CLLocation object), which one should I use to avoid loosing any data?I also not...Read more