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How to check if an email address exists without sending an email?
...here are two methods you can sometimes use to determine if a recipient actually exists:
You can connect to the server, and issue a VRFY command. Very few servers support this command, but it is intended for exactly this. If the server responds with a 2.0.0 DSN, the user exists.
VRFY user
You can...
JavaScript console.log causes error: “Synchronous XMLHttpRequest on the main thread is deprecated…”
...ou return HTML content like that via xhr, you will cause jQuery to make a call to get that script. That call happens with an async flag false since it assumes you need the script to continue loading.
In situations like this one you'd be better served by looking into a binding framework of some kin...
How to save a plot as image on the disk?
...d like to save that image as PNG or JPEG, is it possible to do it automatically? (via code)
11 Answers
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How to make MySQL handle UTF-8 properly
... My understanding is that utf8 within MySQL only refers to a small subset of full Unicode. You should use utf8mb4 instead to force full support. See mathiasbynens.be/notes/mysql-utf8mb4 "For a long time, I was using MySQL’s utf8 charset for databases, tables, and columns, assuming i...
Get full path of the files in PowerShell
I need to get all the files including the files present in the subfolders that belong to a particular type.
14 Answers
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Remove ActiveRecord in Rails 3
...it and get a bit of a head-start. The app uses MongoDB and MongoMapper for all of its models and therefore has no need for ActiveRecord. In the previous version, I am unloading activerecord in the following way:
...
How to check a radio button with jQuery?
...e:
$("#radio_1").attr('checked', 'checked');
Tip: You may also want to call click() or change() on the radio button afterwards. See comments for more info.
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Why does sudo change the PATH?
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Yeah, but it's totally counterintuitive. It probably fools the good guys more than the bad guys.
– Brian Armstrong
Jun 20 '09 at 2:24
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PHP check whether property exists in object or class
... edited Mar 15 at 15:51
Abel Callejo
9,05577 gold badges4444 silver badges6262 bronze badges
answered Jan 19 '13 at 12:32
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How to capture stdout output from a Python function call?
...ager:
from io import StringIO
import sys
class Capturing(list):
def __enter__(self):
self._stdout = sys.stdout
sys.stdout = self._stringio = StringIO()
return self
def __exit__(self, *args):
self.extend(self._stringio.getvalue().splitlines())
del se...