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How to check if an email address exists without sending an email?
... for unsolicited electronic mail advertisements.
helo hi
250 Postini says hello back
mail from: <me@myhost.com>
250 Ok
rcpt to: <fake@stackoverflow.com>
550-5.1.1 The email account that you tried to reach does not exist. Please try
550-5.1.1 double-checking the recipient's email addre...
No secret option provided to Rack::Session::Cookie warning?
...
rails 3.2.9 - ruby 1.9.3p125 (2012-02-16 revision 34643) [i686-linux]
Hello everyone, the following has worked for me, it may work for you.
/usr/local/lib/ruby/gems/1.9.1/gems/actionpack-3.2.9/lib/action_dispatch/middleware/session/abstract_store.rb
module Compatibility
def initiali...
What is the “-d” in “npm -d install”?
...
Hello yup that's why I mentioned that -d force to install npm locally some times npm gets little wired so -d had helped me a lot to do the thing. In the other hand the link that you tagged does not contain the difference of -...
Decorators with parameters?
...ing_multiply(text, times):
return text * times
print(string_multiply('hello', 3)) # Prints hellohellohello
print(string_multiply(3, 3)) # Fails miserably with TypeError
A final note: here I'm not using functools.wraps for the wrapper functions, but I would recommend using it all ...
send Content-Type: application/json post with node.js
...rl:'https://www.googleapis.com/urlshortener/v1/url',
form: {name:'hello',age:25},
headers: headersOpt,
json: true,
}, function (error, response, body) {
//Print the Response
console.log(body);
});
...
What's the difference between Unicode and UTF-8? [duplicate]
...slate each number to a corresponding character. The resulting
string is "hello".
Conclusion
So when somebody asks you "What is the difference between UTF-8 and
Unicode?", you can now confidently answer short and precise:
UTF-8 (Unicode Transformation Format) and Unicode cannot be ...
What exactly is Python multiprocessing Module's .join() Method Doing?
...the Process to True prior to starting the process:
p = Process(target=say_hello)
p.daemon = True
p.start()
# Both parent and child will exit here, since the main process has completed.
If you do that, the child process will be terminated as soon as the main process completes:
daemon
The ...
Why compile Python code?
...ends on what the script does. For a very brief script that simply prints "Hello World," compiling could constitute a large percentage of the total startup-and-run time. But the cost of compiling a script relative to the total run time diminishes for longer-running scripts.
The script you name on ...
Get current stack trace in Ruby without raising an exception
...age] }, :status => 401 }
# format.js { render :js => 'alert("Hello 401")' }
format.js { render :template => 'errors/401.js.erb' }
else
ExceptionNotifier::Notifier.exception_notification(env, exception).deliver
format.html { render :template => "er...
How to set selected value of jquery select2?
...our desired value
$("#mySelect2").select2('data', { id:"elementID", text: "Hello!"});
If you use select2 without AJAX you can do as follow:
<select name="mySelect2" id="mySelect2">
<option value="0">One</option>
<option value="1">Two</option>
<option value="2...