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“unrecognized selector sent to instance” error in Objective-C
...a button and added an action for it, but as soon as it invoked, I got this error:
38 Answers
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I have an error: setOnItemClickListener cannot be used with a spinner, what is wrong?
Kindly This is my code below, and I am pasting the error messages underneath:
I am trying to use setOnItemClickListener on the spinner, is it permissible?
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How to resolve git's “not something we can merge” error
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As shown in How does "not something we can merge" arise?, this error can arise from a typo in the branch name because you are trying to pull a branch that doesn't exist.
If that is not the problem (as in my case), it is likely that you don't have a local copy of the branch that you want...
Why am I getting “undefined reference to sqrt” error even though I include math.h header? [duplicate
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This is a likely a linker error.
Add the -lm switch to specify that you want to link against the standard C math library (libm) which has the definition for those functions (the header just has the declaration for them - worth looking up the differenc...
How to respond with HTTP 400 error in a Spring MVC @ResponseBody method returning String?
...ss)
@ResponseStatus(value = HttpStatus.BAD_REQUEST)
public @ResponseBody MyError handleException(BadThingException e) {
return new MyError("That doesnt work");
}
Edit you can use @ResponseBody in the exception handler method if using Spring 3.1+, otherwise use a ModelAndView or something.
htt...
Node.js Logging
...ile({ filename: __dirname + '/exceptions.log', json: false })
],
exitOnError: false
});
module.exports = logger;
You can then use this like:
var logger = require('./log');
logger.info('log to file');
share
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How to disable Golang unused import error
By default, Go treats unused import as error, forcing you to delete the import.
I want to know if there exists some hope to change to this behavior, e.g. reducing it to warning.
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Build Error - missing required architecture i386 in file
I'm getting this error when building my iPhone application:
16 Answers
16
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Oracle Differences between NVL and Coalesce
...the given values are of different types. So for instance, I was getting an error using COALESCE passing it two NULL values (one explicitly set and the other taken from a column in the database, of type NUMBER), that just disappear by changing the function to NVL.
– DanielM
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Is it safe to resolve a promise multiple times?
...eed a promise can be only resolved once, another tries will do nothing (no error, no warning, no then invocation).
I decided to work it around like this:
getUsers(users => showThem(users));
getUsers(callback){
callback(getCachedUsers())
api.getUsers().then(users => callback(users))
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