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Detecting an undefined object property
...e: different from having a value of undefined) identifier without an early error:
if(typeof myVariable === 'undefined') {
alert('myVariable is either the special value `undefined`, or it has not been declared');
}
In versions of JavaScript prior to ECMAScript 5, the property named "undefined" o...
What is the parameter “next” used for in Express?
...q.params.userId }, function(err, user) {
if (err) {
next(new Error("Couldn't find user: " + err));
return;
}
req.user = user;
next();
});
} else {
next();
}
}
// ...
app.get('/user/:userId', loadUser, function(req, res) {
// do something with ...
“You are on a branch yet to be born” when adding git submodule
...ory, and when I attempt to add this particular repo Git gives me a strange error I've never seen before:
4 Answers
...
Can I load a UIImage from a URL?
...8033f1da3e1_raw_1087fae1932cec8837695934b7eb1250_raw.jpg");
var err: NSError?
var imageData :NSData = NSData.dataWithContentsOfURL(url,options: NSDataReadingOptions.DataReadingMappedIfSafe, error: &err)
var bgImage = UIImage(data:imageData)
...
Incomplete type is not allowed: stringstream
Why does this line give the error Error: incomplete type is not allowed ?
3 Answers
3...
“R cannot be resolved to a variable”? [duplicate]
In Eclipse, I've created a project from a source and now it shows errors - "R cannot be resolved to a variable". From what I found here, I had cleared and rebuilt the project, but still the R file doesn't appear in the /gen folder.
...
Xcode - ld: library not found for -lPods
I get these errors when I try to build an iOS application.
22 Answers
22
...
javax.xml.bind.UnmarshalException: unexpected element (uri:“”, local:“Group”)
...to fix mine problem with iowatiger08 solution.
Here is my fix showing the error message to help join the dots for some.
Error message
javax.xml.bind.UnmarshalException: unexpected element
(uri:"http://global.aon.bz/schema/cbs/archive/errorresource/0",
local:"errorresource"). Expected eleme...
Trust Anchor not found for Android SSL Connection
...ect to an IIS6 box running a godaddy 256bit SSL cert, and I am getting the error :
17 Answers
...
How does the compilation/linking process work?
...ler where each line came from so that it can use those to produce sensible error messages.
Some errors can be produced at this stage with clever use of the #if and #error directives.
Compilation
The compilation step is performed on each output of the preprocessor. The compiler parses the pure C++...