Copy content of one array to another arry

You can use Array.prototype.concat() var A = [1, 2, 3, 4]; var res = A.concat(A); console.log(A, res); I'd suggest to go with guest271314 answer. But if you want to multiply it more than twice, and you're looking for an alternative solution, you can also do it...

How to Make text appear and disappear on image after tapping.

Based on the code you provided, here is a solution that allows the visibility of a div to be toggled when the container is clicked using JavaScript: <style> /* Container holding the image and the text */ .container { position: relative; } /* Bottom right...

Explain the output obtained by using the following Macro

If you had considered the warnings you could have identified yourself macro1.c: In function ‘main’: macro1.c:11:3: warning: passing argument 1 of ‘printf’ makes pointer from integer without a cast [enabled by default] ABC(("Sum of x + y is %d", x + y)); ^ In...

Font scaling based on width of container

But what if the container is not the viewport (body)? This question is asked in a comment by Alex under the accepted answer. That fact does not mean vw cannot be used to some extent to size for that container. Now to see any variation at all one has to be...

How to send Some Value in Button to Textbox in c sharp? [closed]

Hi just add simple code to your buttons, Concern about validations and things. private void plusButton_Click(object sender, EventArgs e) { if (string.IsNullOrEmpty(textBox2.Text)) { int count = 0; textBox2.Text = count.ToString(); } else { int count =...

Clarification regarding content in my android app [closed]

Should i be worried about getting sued (if seen from other angle the source website will also make revenue from my app as their websites are being viewed) (i even show disclaimer saying "all articles belong to respective owners") Directly copying content even...

How do I prevent from writing a number that is already written?

Using a hashset, For every new number, check. If it already exist inside the hashset, ignore it else add it to the hash set and print it int[] numbers = new int[100]; HashSet<int> uniqueNums = new HashSet<int>(); for (int i=0; i < numbers.Length;...

Android code not working

Change your onCreate View like This: TextView textView; ImageView imageView; Button eat; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView = (TextView)...

Increase Boost regex speed or use PCRE in C++ [duplicate]

i used the boost and got better result (2 Min) You'd have to show me that to believe it !! Using benchmark software from this app RegexFormat that uses Boost, I get less than 3 seconds. The thing with that benchmark software is you can use a single test line...