The answer was a simple Regex: bool regexmatch(string s){ regex e (“[-+]?([0-9]*\.[0-9]+|[0-9]+)”); if (regex_match (s,e)) return true; return false; } It will return true on integers (i.e. 56, -34) and floating point numbers (i.e. 6.78, -34.23, 0.6) as expected. 3 solved c++ Check if string is valid Integer or decimal (both negative and positive cases)
Place the body of your code that you want repeating inside a while loop and break when your end-condition is true: public static void main(String[] args) { while(true) { Scanner input = new Scanner(System.in); userinput: System.out.println(“Enter you name:”); String name = input.nextLine(); System.out.println(“OK! Now enter your age:”); int age; age = input.nextInt(); System.out.println(“Good! And the … Read more
One advice, if you don’t learn for yourself, then nobody can teach you. So, please try researching a bit on the internet, or reading a good book before you post a question. Assuming this is your first mistake, and you wont repeat this without working a little on your own, i’ll provide the code and … Read more
Load the images only when they are in the view port. This question tells you how: How do you make images load only when they are in the viewport? solved whats the fastest way to load images using javascript? [closed]
It is probably best to use a regex pattern for this use v5.10; my $s=”.a_b_c(x_y_z)”; my ($ss) = $s =~ /(\w+)/; say $ss; output a_b_c 0 solved How to print part of string which is of kind mentioned below [closed]
import java.io.*; class mdae { public static void main(String[] args)throws IOException { InputStreamReader cr = new InputStreamReader(System.in); BufferedReader in = new BufferedReader(cr); int i, oy,l; String s,q,ioo=” “; char c,v; s=in.readLine(); s=s.replaceAll(“of”,””); q=” “+s+” “; l=q.length(); for(i=0;i<l-1;i++) { c=q.charAt(i); if(c==’ ‘) { for(oy=i;oy<=i+1;oy++) { v=q.charAt(oy); if(v!=’ ‘) { ioo=ioo+v; } } } } System.out.print(ioo); } … Read more
This is probably roughly what you’re looking for: if (screen.width >= 800) { var redirect = confirm(“You are on the mobile site. Would you like to visit our full site instead?”); if (redirect) { window.location.href=”http://TEXTHIDDEN.com/”; } } You should invest some time in learning some javascript basics, and use tools like JSLint to check your … Read more
Your arraylist is a static variable inside your class.So there is only one arraylist in memory.Each time you call the song method , you are modifying the same list.That means your latest_songs,top_songs,hit_songs, all will be pointing to same list.That is the reason your list is getting over ridden. Try creating a list inside your method … Read more
Something like the below may be feasible here: long a = System.nanoTime(); //Do your stuff System.out.println(“Total time taken: ” + System.nanoTime() – a); 2 solved Java : Total downloading time [closed]
Taken from a question here: Adding items to end of linked list class Node { Object data; Node next; Node(Object d,Node n) { data = d ; next = n ; } public static Node addLast(Node header, Object x) { // save the reference to the header so we can return it. Node ret = … Read more
Add this code to Form1’s button click, private void button1_Click(object sender, EventArgs e) { Form2 from2 = new Form2(); Control[] button = from2.Controls.Find(“button1”, true); button[0].Click += new EventHandler(ShowLabel); from2.ShowDialog(); } Add this Form1 too (Set the WORK label’s visible property to false under properties) private void ShowLabel(object sender, EventArgs e) { label1.Visible = true; //Setting … Read more
for(NSDictionary * dict in ezpoints) { [userPrivacyArray addObject:[dict valueForKey:@”user_privacy”]]; [LattitudeArray addObject:[dict valueForKey:@”latitude”]]; [LongitudeArray addObject:[dict valueForKey:@”longitude”]] } parse the data using valueForKey using key you can identify your json data and stored into NSArray, NSString where you want. here userPrivacyArray,LattitudeArray,LongitudeArray all are array. try this stuff. 3 solved Parse JSON array of objects in Objective C … Read more
try to remove the simple quotes in your printf: $row[‘id_region’] becames $row[id_region] but I suggest you this to be sure: echo ‘<td>’.$row[‘id_region’].'</td>’; Also, please consider using mysqli instead of mysql, as it’s deprecated <?php $dbhost=”…………”; $dbuser=”……..”; $dbpass=”…….”; $dbname=”db_site”; $my = new Mysqli($dbhost, $dbuser, $dbpass, $dbname); ?> <h4><center>Title</center></h4> <table border=”2″ cellspacing=’0′ cellpadding=’0′> <tr> <td>id</td> <td>id_site</td> <td>id_mast</td> … Read more
you can’t use your counter variable inside your string, you need to concatenate it $pp_sql = “UPDATE Invoices SET pp” . $i . “_dt=”$pp1_dt”, pp” . $i . “_amt=”$pp1_amt”, pp” . $i . “_ref=”$pp1_ref” where invoice_no=” . $id . ” AND (coalesce(pp” . $i . “_dt, pp” . $i . “_amt, pp” . $i . … Read more
You can retrieve the fields of each line using str_getcsv(). http://www.php.net/manual/en/function.str-getcsv.php Or just explode a second time: foreach( explode( “\n”, $text ) as $line ) { $fields = explode( ‘,’, $line ); var_dump( $fields ); } solved converting phone numbers to vcf format algorithm [closed]