[Solved] Simple dataframe query in R [closed]
Here we go — thanks again, Barranka and Olivier for the help. subset(df, (Gender == ‘Male’ & Color == ‘Blue’), select=c(Old)) solved Simple dataframe query in R [closed]
Month: September 2022
[Solved] goto vs method in finally block in c#
Isn’t the goto moo and static void moo() doing the same act i.e taking me out of finally block? No, absolutely not. goto moo would transfer control out of the finally block completely. moo() just calls the method, but then when the method returns you’re back in the finally block. If you put a Console.WriteLine(“Still … Read more
[Solved] What are the repercussions of not using null termination in strings?
What are the repercussions of not using null termination in strings? Technically none, because C strings are – by definition – terminated by a null character: A string is a contiguous sequence of characters terminated by and including the first null character. So if it’s not properly terminated, it’s not a string. If you pass … Read more
[Solved] How do I make a string a string array?
String text = “The Three Pigs”; String[] array = text.split(” “); EDIT: If you want to let the user to enter a line of text rather than a single word, then use: String O = S.nextLine(); instead of: String O = S.next(); 3 solved How do I make a string a string array?
[Solved] Running a .class java file from cmd. Issue
just type in cmd java CustomerManager , no need to add .class 1 solved Running a .class java file from cmd. Issue
[Solved] Cleaning Android FrameLayout [closed]
Reference your frame layout and then call removeAllViews() on that layout. This should clear the layout of all views. 0 solved Cleaning Android FrameLayout [closed]
[Solved] Simple jQuery fade in fade out image [closed]
This was the simplest I could get, its a circular gallery, it starts over when it reaches the end. Here is a fiddle: http://jsfiddle.net/KA4Zq/ var count = 1; setInterval(function() { count = ($(“.slideshow :nth-child(“+count+”)”).fadeOut().next().length == 0) ? 1 : count+1; $(“.slideshow :nth-child(“+count+”)”).fadeIn(); }, 2000); The only thing you should change is the 2000 value (2sec). … Read more
[Solved] How to check if a string equals to “}”
Just do str_.equals(“{“); or str_.equals(“}”); We are still not sure which brace EDIT: Ah now we have clarity. Use str_.equals(“}”); 3 solved How to check if a string equals to “}”
[Solved] “undefined reference to” NOT the template constructor,but the constructor of the class I’m trying to use the template with
“undefined reference to” NOT the template constructor,but the constructor of the class I’m trying to use the template with solved “undefined reference to” NOT the template constructor,but the constructor of the class I’m trying to use the template with
[Solved] what do you call this effect and how do you implant it [closed]
The technique is called Parallex and can be implemented easily by marerializecss 1 solved what do you call this effect and how do you implant it [closed]
[Solved] How to run a Java HelloWorld program?
The file name of the Java Class file must be the same one as your Class. Class: public class HelloWorld {} File: HelloWorld.java solved How to run a Java HelloWorld program?
[Solved] What would be the outcome of evaluating the following statements? {javascript}
This depends on what Element is and whether getAttribute is defined for it. If so, the question is: what does getAttribute do, if called with the parameter of “src”. For instance, if getAttribute is like this: function MyElement() { var that = this; var getAttribute = function(param) { return that.param; } } and Element is … Read more
[Solved] why alert() cannot give message as i expected?
You’re making a mistake of mixing your data into your HTML. If you keep the data in JavaScript and just use HTML to show the data, it will be a lot easier to use the data in calculations, modify it based on a user interaction, etc Click Run Code Snippet below to see it work … Read more
[Solved] Class Cast Exception error in j2ee [closed]
These lines set up an Iterator<String> implicitly, since whatever collection you’re returning in plh.findByAllSessions() is a Collection of Strings. col = plh.findByAllSessions(); Iterator i = col.iterator(); Thus this line tried to force a String to a PaymentsLocal object, which is not possible, causing a ClassCastException. pl = (PaymentsLocal)i.next(); This is because i.next() returns an object … Read more
[Solved] php, from json decode to individual variables
$result = $data->response->result; Assuming the variable $data is where you stored your json_decode. It returns an instance of stdClass, and viewing the vardump, you can see the structure and get the data you want. solved php, from json decode to individual variables