This error often means that some function has a declaration, but not a definition. Example: In your case, the definition cannot be found. The issue could be that you are including a header file, which brings in some function declarations, but you either: do not define the functions in your cpp file (if you wrote … Read more
Yes there is a difference! The immediate effect of using innerHTML versus dangerouslySetInnerHTML is identical — the DOM node will update with the injected HTML. However, behind the scenes when you use dangerouslySetInnerHTML it lets React know that the HTML inside of that component is not something it cares about. Because React uses a virtual … Read more
You should use #!/usr/bin/env bash for portability: different *nixes put bash in different places, and using /usr/bin/env is a workaround to run the first bash found on the PATH. And sh is not bash.
This question already has answers here: Uncaught ReferenceError: $ is not defined? (40 answers) Closed 5 years ago. I have implemented some JavaScript on my site but I keep getting the following error messages: Uncaught ReferenceError: jQuery is not defined and Uncaught SyntaxError: Unexpected token < This is the JavaScript that I am using in … Read more
I’m trying to keep the legend of one layer (smooth) and remove the legend of the other (point). I have tried shutting off the legends with guides(colour = FALSE) and geom_point(aes(color = vs), show.legend = FALSE). Edit: As this question and its answers are popular, a reproducible example seems in order:
Stack Smashing here is actually caused due to a protection mechanism used by gcc to detect buffer overflow errors. For example in the following snippet: The compiler, (in this case gcc) adds protection variables (called canaries) which have known values. An input string of size greater than 10 causes corruption of this variable resulting in … Read more
You are loading the Javascript file in the <head>, before the body of your HTML Is loaded. Therefore your line Has nothing to look up – your button with class guessSubmit doesn’t exist yet. And since guessSubmit is null, it does not contain any properties, hence the error. The easiest solution is to put your … Read more
Line 18 is gcc -fPIC -g -c -Wall mymemory.cpp. Make is expecting a separator, typically :. It’s not detecting this line as a command. You mistyped the intendation: you have spaces where you should have a tab. Good editors highlight makefile lines that begin with spaces but look like they should begin with a tab … Read more
I have set up PHP, MySQL, and Apache. localhost() for PHP and it is working well. But after I downloaded MySQL, it reports: Fatal error: Call to undefined function mysql_connect() How can I fix this?
Add jQuery library before your script which uses $ or jQuery so that $ can be identified in scripts.