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R command for setting working directory to source file location in Rstudio
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Doesn't work for me. I get Error: 'getActiveDocumentContext' is not an exported object from 'namespace:rstudioapi'
– Andru
Nov 22 '16 at 20:32
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Must qualify the allocation with an enclosing instance of type GeoLocation
I am getting this error as-
6 Answers
6
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Java generics T vs Object
... is that with generic methods I don't need to cast and I get a compilation error when I do wrong:
public class App {
public static void main(String[] args) {
String s = process("vv");
String b = process(new Object()); // Compilation error
}
public static <T> T p...
RequestDispatcher.forward() vs HttpServletResponse.sendRedirect()
...e (e.g. validation, business logic, login the user, etc).
If there are any errors, then you normally want to forward the request back to the same page and display the errors there next to the input fields and so on. You can use the RequestDispatcher for this.
If a POST is successful, you normally wa...
CodeIgniter removing index.php from url
...index.php/about-us and domain.com/index.php?/about-us which generating SEO error i.e duplicate title tag and duplicate meta description
– Musaddiq Khan
Jun 26 '14 at 12:35
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Run R script from command line
...and I am trying to execute R script from Java program and I am seeing some error. Here is my question. See if you can help out. I am using your hello function example for now to make it simple.
– user1950349
Sep 16 '15 at 22:23
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Use of 'use utf8;' gives me 'Wide character in print'
...ng and gives you a warning. As ever, you can get more explanation for this error by including use diagnostics. It will say this:
(S utf8) Perl met a wide character (>255) when it wasn't expecting
one. This warning is by default on for I/O (like print). The easiest
way to quiet this warn...
“where 1=1” statement [duplicate]
... example if the $_REQUEST['cond'] is not "age" the query will return mysql error because there are nothing after the where condition.
the query will be select * from some_table where and that is error
to fix this issue (at least in this insecure example) we use
<?php
//not that this is just ...
What is the difference between const int*, const int * const, and int const *?
... this side effect.
int var0 = 0;
const int &ptr1 = var0;
ptr1 = 8; // Error
var0 = 6; // OK
Constant pointers
Once a constant pointer points to a variable then it cannot point to any other variable.
int var1 = 1;
int var2 = 0;
int *const ptr2 = &var1;
ptr2 = &var2; // Error
Pointe...
calling non-static method in static method in Java [duplicate]
I'm getting an error when I try to call a non-static method in a static class.
14 Answers
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