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How should I validate an e-mail address?
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I know this answer is about two years old, but when I try this regex using regexr.com, it validates user@gmail.com.nospam, and even longer tlds like .museum. Am I missing something? I don't want to block any of my users by faili...
Draw line in UIView
...extAddLineToPoint(context, 20.0f, 20.0f); //draw to this point
// and now draw the Path!
CGContextStrokePath(context);
}
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iOS start Background Thread
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cool! didn't know this. Does this apply to [NSThread detachNewThreadSelector:@selector.... also?
– Srikar Appalaraju
Aug 14 '11 at 7:25
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Most efficient way to create a zero filled JavaScript array?
...sional arrays and it seemed to greatly speed up my test cases. Having just now done some more testing on FF41 and Chrome45.0.2454.99 m. Yes, I guess I really needed more space to explain myself. Most of my testing was bias I will admit. But, check this out. Predefine a var and using just this line (...
Label encoding across multiple columns in scikit-learn
...commended way is
OneHotEncoder().fit_transform(df)
as the OneHotEncoder now supports string input.
Applying OneHotEncoder only to certain columns is possible with the ColumnTransformer.
EDIT:
Since this answer is over a year ago, and generated many upvotes (including a bounty), I should probabl...
PHP Regex to get youtube video ID?
...ment. In this case we're interested in the query, which is PHP_URL_QUERY.
Now we have the query, which is v=C4kxS1ksqtw&feature=relate, but we only want the part after v=. For this we turn to parse_str which basically works like GET on a string. It takes a string and creates the variables speci...
What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?
...ames), though Windows is the only platform where this is true as far as I know (so maybe we can think of wchar_t as 'Windows_char_t').
In hindsight wchar_t is clearly not useful for simplifying text handling, or as storage for locale independent text. Portable code should not attempt to use it for ...
IOException: read failed, socket might closed - Bluetooth on Android 4.3
...b/android-4.3_r2/core/java/android/bluetooth/BluetoothDevice.java#L1037).
Now, when I receive that exception, I instantiate a fallback BluetoothSocket, similar to the source code below. As you can see, invoking the hidden method createRfcommSocket via reflections. I have no clue why this method is ...
SQL to determine minimum sequential days of access?
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(because NOBODY would do a SELECT *, we know adding this computed column will not affect the query plans unless the column is referenced... right guys?!?)
– IDisposable
Jul 24 '09 at 8:24
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Add new field to every document in a MongoDB collection
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Pymongo 3.9+
update() is now deprecated and you should use replace_one(), update_one(), or update_many() instead.
In my case I used update_many() and it solved my issue:
db.your_collection.update_many({}, {"$set": {"new_field": "value"}}, upsert=Fa...