If you have a string: a=”hi how \\are you” you can remove it by doing: a.replace(‘\\’,”) >’hi how are you’ If you have a specific context where you are having trouble, I recommend posting a bit more detail. 2 solved I want to remove ‘\’ from a string in python [duplicate]
This format: test << “foo” will append an element to an array as you’re describing. solved Ruby: Array manipulation [closed]
It computes the Cartesian product over any number of iterables. Source So if you have two lists like [1,2] and [3,4], the Cartesian product is (1,3),(1,4),(2,3),(2,4) 10 solved What does product() do in python? [closed]
You need to understand the concepts of post increment(decrement) and pre increment(decrement). Post increment cout << x++<<endl; You can understand this line as “Return the value of x” + “increment the value of x”. I.e The return value is before the increment. So return 0 and increase the value of x to 1. Pre increment … Read more
Just use Split: string[] yourStrings = s.Split(‘,’); Actually, what I think you’re asking for is a return string like this: “red, blue, green, yellow” To achieve that, you need to use string.Join. Try this: public static string getcolours() { List<string> colours = new List<string>(); DBClass db = new DBClass(); DataTable allcolours = new DataTable(); allcolours … Read more
Ruby does have first class functions. What makes you think it doesn’t? From wikipedia: A language that has first-class functions is one where: The language supports constructing new functions during the execution of a program, storing them in data structures, passing them as arguments to other functions, and returning them as the values of other … Read more
You can define a natural ordering for your class IceCream by implementing the Comparator interface. public class IceCream implements Comparator{ // … final String name; final Date date; public Icecream(String name, Date date){ this.name = name; this.date = date; } public int compare(Object o1, Object o2) { return ((IceCream)o1).date.compareTo(((IceCream)o2).date); } } 3 solved sorting (constructor) … Read more
int randomNumber = ( int )( Math.random() * 9999 ); if( randomNumber <= 1000 ) { randomNumber = randomNumber + 1000; Math.random() is a method that generates a random number through a formula. It returns a double however, so casting is required if you want an integer, float, or etc. The if block makes sure … Read more
Try this: \b(?:256\d{9}|07[17-9]\d{8})\b Explanation: <!– \b(?:256\d{9}|07[17-9]\d{8})\b Options: ^ and $ match at line breaks; free-spacing Assert position at a word boundary «\b» Match the regular expression below «(?:256\d{9}|07[17-9]\d{8})» Match either the regular expression below (attempting the next alternative only if this one fails) «256\d{9}» Match the characters “256” literally «256» Match a single digit 0..9 … Read more
I think what you want to do here is this: int getLength(int[] arr) { int length = 0; for(int i = 0; i < arr.length; i++) length++; return length; } I am assuming that this is for some sort of homework, and this is just for teaching for loops because this method is complete overkill … Read more
$gdate = date(“Y-m-d”, strtotime(‘today’)); if($gdate==date(“Y-m-d”,strtotime(‘last day of december’))){ $queryrun=mysql_query( $query); you were checking with d-m-Y which is wrong. both date format wasn’t same and that the query is not running. and also a closing ) bracket was missing. Note: mysql_query will be deprecated. solved Can’t run MySQL query with an end of the year check … Read more
true && !true => false false && !false => false the only other option is Boolean x = null; x && !x => NullPointerException. 2 solved Java -Boolean expression of variable and it’s inverse
scanf(“%d%d%d%d%d”,&a,&b,&c,&d,&e,&f); You should have another %d there. Otherwise f contains a garbage value and it’ll be never equals a. I recommend you to reconsider your code and write something more general, like reading a string instead of individual ints. 3 solved Palidrome program is not workig [closed]
I run query in another page and pass ID through ajax and got my solution <script> function myFunction(msg) { $.ajax ({ type: “POST”, url: “updatefile.php?id=”+msg }); } </script> solved Run MySql Query when color box open
printf format string %.*s takes two arguments, * for the number and finally s for a string, so it prints the first 7 characters of the string pointer s. In general, anytime there is a number, you may use * instead to read it as an argument. %7s would print seven characters or more if … Read more