There are different things that can be called strings in C++, std::string is the main one, and that already provides those operators. C-style null terminated strings are another, and string literals yet another. For the latter two, you cannot overload operator< or operator>, as you can only overload operators for user defined types. Even if … Read more
try var firstChar = dr[“Value”].ToString()[0]; var ok = firstChar == ‘y’ || firstChar=”Y”; and make some performance-tests – but I don’t think that this will really be a issue at all. PS: assuming that the string is not empty – if this might be an issue make it var value = dr[“Value”].ToStrin(); var firstChar = … Read more
Since you already have a C string, just use strcmp. It will likely be faster than the s.compare method since you avoid the overhead of doing a conversion to std::string for both the original string and the string to compare to. if (strcmp(c, “hello”) == 0) { … solved fastest way to compare char* (C/C++)? … Read more
Probably there could be better solutions, but the following should work for you: public static void main(String[] args) { Integer[] a = new Integer[] { 1, 0, 0, 1, 0, 0 }; List<Integer> a1 = Arrays.asList(a); Integer[] b = new Integer[] { 0, 1, 1, 0, 0, 0 }; List<Integer> a2 = Arrays.asList(b); List<Integer> a3 … Read more
Ok, let’s assume we have a dataframe data and list negative_words like this: data = pd.DataFrame({ ‘Tweets’ : [‘This is bad’, ‘This is terrible’, ‘This is good’, ‘This is great’], }) negative_words = [‘bad’, ‘terrible’] We can then do something like: 1) We can use a lambda function with any: # create lambda with any: … Read more
Try this, function compareArr(arr1, arr2) { var longArray = arr1.length >= arr2.length ? arr1 : arr2; var shortArray = arr1.length < arr2.length ? arr1 : arr2; return resultArr = longArray.filter(function (v) { return shortArray.filter(function (iv) { return v.Lattitude === iv.Lattitude && v.Location === iv.Location && v.Longitude === iv.Longitude; }).length === 0; }); } var resultArr … Read more
I suggest adding some debugging output to your program: while (!fileEn.eof()){ getline(fileEn,line); // Debugging output std::cout << “en[” << i << “] = ‘” << line << “‘” << std::endl; en[i]=line; i++; } and for(int i = 0; i < 100; ++i){ Matn >> matn[i]; // Debugging output std::cout << “matn[” << i << “] … Read more