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What is “callback hell” and how and why does RX solve it?
... that explains what is a "callback hell" for someone who does not know JavaScript and node.js ?
8 Answers
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Why does installing Nokogiri on Mac OS fail with libiconv is missing?
...le distributes libiconv with OS X, you can find it in /usr/lib. Some build scripts fail to detect it correctly, please check existing formulae for solutions.
– Seth Bro
Mar 21 '12 at 15:05
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PHP mail function doesn't complete sending of e-mail
...be applied to any PHP mailing system.
There are a variety of reasons your script appears to not be sending emails. It's difficult to diagnose these things unless there is an obvious syntax error. Without one you need to run through the checklist below to find any potential pitfalls you may be encou...
How can I get a list of all classes within current module in Python?
...e module is already available in globals. If you execute foo as main (as a script) the module is actually run twice because when you get to 'import foo' main will be in the global namespace but not foo. After 'import foo' both 'main' and 'foo' will be in the globals namespace.
–...
Check if my app has a new version on AppStore
...isUpdateAvailable()
DispatchQueue.main.async {
// show alert
}
} catch {
print(error)
}
}
Update
Using URLSession:
Instead of using Data(contentsOf: url) and block a thread, we can use URLSession:
func isUpdateAvailable(completion: @escaping (Bool?, E...
Equation (expression) parser with precedence?
...w 'trailingJunk';
}
return value;
} catch(e) {
alert(r.error + ' (' + e + '):\n' + r.string.substr(0, r.offset) + '<*>' + r.string.substr(r.offset));
return;
}
}
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Why do we need to install gulp globally and locally?
...installed eslint, you can do:
npx eslint .
npm < 5.2
When used in a script field of your package.json, npm searches node_modules for the tool as well as globally installed modules, so the local install is sufficient.
So, if you are happy with (in your package.json):
"devDependencies": {
...
Can anyone explain python's relative imports?
...fely delete the top level __init__.py, if you don't import anything into a script further up the directory tree.
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Is there a way to change the environment variables of another process in Unix?
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You've got a shell script running; you want to change the environment in your shell script's parent process...so the shell script launches gdb on the parent process and is scripted into do making the change, and it works without crashing the pa...
jQuery/Javascript function to clear all the fields of a form [duplicate]
... resetting form fields, not clearing fields - see update.
You can use JavaScript's native reset() method to reset the entire form to its default state.
Example provided by Ryan:
$('#myForm')[0].reset();
Note: This may not reset certain fields, such as type="hidden".
UPDATE
As noted by IlyaDo...