[Solved] The number of items printed from my vector is inconsistent with the supposed number of items IN the vector [closed]

[ad_1] When you execute these lines: vector<string> wordSets(24); wordSets.push_back(“CHICKEN”); wordSets has 24 empty items an the item “CHICKEN”. I suspect, you didn’t mean that. Changing the first line to: vector<string> wordSets; should fix the wrong number of items problem. If you want to reduce the number of times memory is allocated by calls to push_back, … Read more

[Solved] Break outside the loop

[ad_1] You use break when you want to break free from a loop, to exit the loop, to jump to the nearest code after the loop. Your code doesn’t contain a loop, so nothing to break free from, hence the error. [ad_2] solved Break outside the loop

[Solved] C equivalent of C++’s double colons?

[ad_1] In C, loadSurface would be declared as simply SDL_Surface *loadSurface(const char *path) which means the call to SDL_LoadBMP can be written as SDL_Surface *loadedSurface = SDL_LoadBMP(path); The details of what std::string does and why .c_str() is needed are not relevant if you are not interested in learning C++, and in this case are not … Read more

[Solved] Difference boolean[] b = {false} vs. boolean b = false? [closed]

[ad_1] Difference between these primarily is that boolean[] cameraPermissionGranted = {false}; is an array that persists boolean type of data initialized with single element false at present unless resized(re-initialized) while boolean cameraPermissionGranted = false; is just an attribute that is initialized as false and can be updated thereafter. One of the very intuitive example that … Read more

[Solved] Create Hashset with a large number of elements (1M)

[ad_1] To build on @Enigmativity’s answer, here’s a proper benchmark using BenchmarkDotNet: public class Benchmark { private const int N = 1000000; [Benchmark] public HashSet<int> EnumerableRange() => new HashSet<int>(Enumerable.Range(1, N + 1)); [Benchmark] public HashSet<int> NoPreallocation() { var result = new HashSet<int>(); for (int n = 1; n < N + 1; n++) { result.Add(n); … Read more

[Solved] how do i use a class without instantiating it?

[ad_1] i would like to use it like this string role = GetRole.OfUser(username); So do so; that appears to be correct. Did you try it? or like this even better: string role = GetRole(username); That won’t work; you have to specify the method you’re calling as well as what class it comes from. If you … Read more

[Solved] Bitwise OR not working C [duplicate]

[ad_1] As you learnt from your previous question, char is signed on your platform. Therefore, at the beginning of your while loop, c has a negative value. Right-shifting a negative value is implementation-defined. On your platform, I imagine it is doing an arithmetic shift. 4 [ad_2] solved Bitwise OR not working C [duplicate]

[Solved] == vs. in operator in Python [duplicate]

[ad_1] if 0 in (result1, result2, result3): is equivalent to: if result1==0 or result2==0 or result3==0: What you want is this: if (0,0,0) == (result1, result2, result3): Which is equivalent to: if result1==0 and result2==0 and result3==0: You could actually even do this: if result1==result2==result3==0: since you’re checking to see if all 3 variables equal … Read more

[Solved] java-image processing [closed]

[ad_1] It is building a number which contains the 6th, 7th, 14th, 15th, 22nd and 23rd bits from the original image’s colour. i.e. it is producing a crude 6-bit colour from a 24-bit colour. e.g. 000000000rrrrrrrrrggggggggbbbbbbbb becomes the top bits of rrbbgg [ad_2] solved java-image processing [closed]

[Solved] Linq in dictionary collection [closed]

[ad_1] None of the other answers leverage the lookup-speed of the dictionary: var matches = allBills .Where(dict => dict.billList.ContainsKey(“User”)) .Where(dict => dict.billList[“User”] == “Nick”); 4 [ad_2] solved Linq in dictionary collection [closed]