it allows to define a criterion which replaces the < comparison between elements. For instance: >>>l = [“hhfhfhh”,”xx”,”123455676883″] >>>max(l, key=len) ‘123455676883’ returns the longest string in the list which is “123455676883” Without it, it would return “xx” because it’s the highest ranking string according to string comparison. >>>l = [“hhfhfhh”,”xx”,”123455676883″] >>>max(l) ‘xx’ 2 solved What … Read more
On line 161 you are doing an else if but there fore you did’nt specify any if. I don’t know what your doing in your code. But either remove the else in the else if statement or create an if statement before the else if. An else if statement comes after an if statement or … Read more
You cannot convert a string literal to a shared pointer. Let me just “correct” your code, and then all you have remaining is undefined behavior: const char *str = “abcdfg”; boost::shared_ptr<char> ss(str); Now, this will compile, but it will produce serious problems because str is not memory that was allocated dynamically. As soon as the … Read more
This is a short hand if else statement. if isInverted { return !wasInitiallyAdded } else { return wasInitiallyAdded } 1 solved Unclear understand of ? : in swift syntax [duplicate]
This operator+ is used here (a pointer to single char that is not null-terminated is not really suitable). Yes, most definitely undefined behavior. lhs – string, character, or pointer to the first character in a null-terminated array Just make std::string the common type to fix it: ((d == ‘\0’) ? std::string(“null character”) : std::string(1, d)) … Read more
Check the documentation https://docs.python.org/3/library/stdtypes.html#string-methods https://docs.python.org/3/library/stdtypes.html#str.index Build your code around the method: # characters to look for in a list (string would work as well) vowels = [“a”,”i”,”o”,”u”,”e”,”y”] # a function (method) def vowel_indices(word): # prepare empty list to collect the positions in hits = [] # test every of your vowels for vowel in vowels: … Read more
Because comp1(a,b) and comp1(b,a) can both return true, which isn’t allowed. std::sort states that: comp – comparison function object (i.e. an object that satisfies the requirements of Compare) which returns ​true if the first argument is less than (i.e. is ordered before) the second. And following the link to Compare we also see: Establishes strict … Read more
You probably want s.split(“#”, -1); From the docs on the 2-arg form: If n is non-positive then the pattern will be applied as many times as possible and the array can have any length. If n is zero then the pattern will be applied as many times as possible, the array can have any length, … Read more
It is called chainable methods. In order to apply a method on $theclassvariable it needs to be an instance of a class. Let’s define it: class myClass { public function __construct() { echo ‘a new instance has been created!<br />’; } public function firstMethod() { echo ‘hey there that\’s the first method!<br />’; return $this; … Read more
Although the question might not be too precise, I think I still got the point: Imagine, the code would have been written as follows: Widget& Widget::operator=(const Widget& rhs) { if (rhs == *this) // actually, you’d rather do &rhs == this! // you don’t want self-assignment return; delete pb; pb = new Bitmap(*rhs.pb); return *this; … Read more
Yes. First iteration: i = 1, 1/1 = 1 > 0, so it loops. Second iteration: i = 2, 1/2 = 0 !> 0 (integer division), so it stops. 10 solved Does this ‘for’ loop stop, and why/why not? for (int i=1; 1/i > 0; i++) { }
Try to move your question to the correct queue How ever try with this RewriteEngine on RewriteBase /site_folder/ RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php [L] 2 solved Some problems regarding my website
In Java, you cant define method inside a method onCreate(){ //your code } onStart(){ // code } solved Android error ! when i create override onstart method ..as given below help me [closed]
You just need to pass parameters no need specify parameter type when calling the function in c. Change h=add(int x, int y); to h=add(x,y); have a look at this:-http://www.techcrashcourse.com/2015/05/c-programming-function-calling.html solved given two integers write a program that uses function add() to add these numbers and sub() to find the difference [closed]
Since your question does not clearly state that: This anwer assumes that the entries in all list should be sorted afterwards and that each number is unique within each sublist. You can reach this as follows: numbers = [[50, 100],[100, 130],[20, 50, 100, 130]] unique = sorted({n for l in numbers for n in l}) … Read more