Going by the if statements: fib(0) = 0 fib(1) = 1 fib(2) = fib(2-1) + fib(2-2) = fib(1) + fib(0) = 1 + 0 = 1 fib(3) = fib(3-1) + fib(3-2) = fib(2) + fib(1) = fib(2-1) + fib(2-2) + 1 = fib(1) + fib(0) + 1 = 1 + 0 + 1 = 2 … Read more
maybe not the best way to do it, but will get the job done. vars_df = unique(df$x) for (i in 1:length(vars_df)) { assign(paste0(vars_df[i]), df %>% filter(x == vars_df[i]), envir = .GlobalEnv) } solved Automatically subset data frame by factor
circleType::setRadius; double radius = circle.getRadius; The first line doesn’t do anything. The second line tries to set a variable of type double equal to a function. Perhaps you want to call these functions? This is what non-operator member function calls look like in C++: double area = circle.areaCir(radius); double circumferance = circle.circumCir(radius); circle.printCir(circumferance, area); So … Read more
I would advise you to take a look at this link: https://www.tutorialcup.com/cplusplus/multithreading.htm It has many examples and lots of theory to read and understand about threads and multithreading. solved How to pass a value in a function and put the function in a thread?
Both what1() and what2() are modifying strings passed as literals, that’s undefined behavior since such strings can be stored in read-only memory. 1 solved Error running program – C [closed]
In a header: someType MyFunc(someType1 var1, someType2 var2); //notice the “;” at end someType is the type of what the function returns, for example double. Same goes for parameters. For example double MyFunc(int var1, double var2) In the source someType MyFunc(someType1 var1, someType2 var2) { do something with var1, var2 return something of type ‘someType’ … Read more
@Sourav Ghosh have already explained what was wrong with your code and also suggested one way to solve it. Here is another way. Instead of passing current and head as variables to be changed inside the function (i.e. as pointer-to-pointer), I would recommend that you use the function return value. In that way you don’t … Read more
Just make it one: create function ops() returns table (region varchar, man integer, woman integer, test integer) as $$ Select region,man, woman, Case When woman > man then woman – man When woman < man then man – woman ELSE 0 END AS test From people; $$ language sql; 0 solved Postgresql switch query to … Read more
You had some error about your indentation and element word, it was element def copy_sort(array): copy=array[:] sorted_copy=[] while len(copy)>0: minimum=0 for element in range(0,len(copy)): if copy[element] < copy[minimum]: minimum=element print(‘\nRemoving value’,copy[minimum], ‘from’,copy) sorted_copy.append(copy.pop(minimum)) return sorted_copy array=[5,3,1,2,6,4] print(‘Copy sort…\nArray:’,array) print(‘copy :’, copy_sort(array)) print(‘array’,array)` 1 solved Python sorting algorithm [closed]
You can’t insert boolean conditions into the function this way: if (!strcmp( yn , “y” || yn , “Y”)) change the conditions to first evaluate the boolean result of the functions and then perform your logical comparison if (!strcmp(yn , “y”) || !strcmp(yn , “Y”)) Also notice that you’re missing #include <cstring> to use strcmp … Read more
The main problem I see with your code is the reading loop, it has mainly two issues Read: Why is while (!feof(rPtr)) always wrong. You must check the return value of scanf(), and prevent scanf()‘s from overflowing the destination buffer, so the loop condition should be while (fscanf(rPtr, “%14s%lf%lf%lf”, fromDb.name, &fromDb.dArea, &fromDb.dLength, &fromDb.dFormFactor) == 4) … Read more
1) First, don’t use naked new, and don’t use new al all if it is not necessary. Because it can lead to memory leak problems. 2) Don’t use a setter just use a constructor. 3) Use const Date & in an overloaded Date constructor 4) Initialize Date with initilizer list. Use the overloaded constructor Date … Read more
Here is a test application to show you the trace of the program’s execution (requires Java 11 due to the use of String#repeat(int)): public class Main { private static int depth; public static void main(String[] args) { foo(0); } public static void foo(int n) { printDebug(“Invoked foo(” + n + “)”); if (n < 2) … Read more
let pick1 = openCard; You redeclare pick1 inside the function. This creates a new variable that masks the global variable of the same name. Each time you run the function, you get a new pick1 and a new pick2, both of which are undefined. Consequently, you’ll always hit the first half of the if/else. Remove … Read more
This is all the code you need with the function: $url = “http://dev.icalapp.rogersdigitalmedia.com.rogers-test.com/Team+Calendar.doc”; $dir = “testing”; downloadRemoteFile($url,$dir); Also the target directory ($dir) should be writeable. And your webserver must allow outbound HTTP connections. 1 solved how do I use this remote download file in PHP? [closed]