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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...
Can I zip more than two lists together in Scala?
Given the following Scala List:
10 Answers
10
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How to show google.com in an iframe?
...L(data.query.results.resources.content);
else if (data && data.error && data.error.description) loadHTML(data.error.description);
else loadHTML('Error: Cannot load ' + url);
};
var loadURL = function (src) {
url = src;
var script = document.createElement('script');
...
How to list containers in Docker
There's a command to list images, docker images , but there doesn't seem to be a corresponding docker containers .
14 Ans...
Find provisioning profile in Xcode 5
In Xcode 5, I can get list of provisioning profiles under Xcode >> preferences >> accounts >> view details . I want to copy profile and have to send it to one of my client, but I am not able to right click on it to find it using " Reveal Profile in Finder " option.
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download file using an ajax request
....php?get_file=true" or something... I have an ajax function that does some error checking on a form submission and then creates a csv file. If the error check fails, it has to come back with why it failed. If it creates the CSV it is telling the parent that "go ahead and fetch the file". I do that b...
Uncaught ReferenceError: jQuery is not defined [duplicate]
...ve implemented some JavaScript on my site but I keep getting the following error messages:
5 Answers
...
How to upgrade rubygems
...
Respectively with shellcheck errors fixed: gem update "$(gem outdated | cut -d ' ' -f 1)";.
– BernhardWebstudio
Oct 19 '19 at 9:38
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How to solve error message: “Failed to map the path '/'.”
...my website I try to navigate to (even addresses that don't exist give this error instead of a 404), I get the exact same message (the path is always '/'). Any ideas?
...
How should strace be used?
...see what your OS does. It basically saves the trouble of writing logging / error-check code for one-off experiments. (Or if you're writing in asm or something where there's a good chance you accidentally passed the wrong args or even call number.) strace is much faster than GDB because it looks up...