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Delete the first three rows of a dataframe in pandas
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Use iloc:
df = df.iloc[3:]
will give you a new df without the first three rows.
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How to initialise a string from NSData in Swift
...tastring = NSString(data: fooData, encoding: NSUTF8StringEncoding)
Swift 3 or newer:
let datastring = NSString(data: fooData, encoding: String.Encoding.utf8.rawValue)
This doc explains the syntax.
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How to split a long regular expression into multiple lines in JavaScript?
...,[\]\\.,;:\\s@\"]+)*)',
'|(\\".+\\"))@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.',
'[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\\.)+',
'[a-zA-Z]{2,}))$'].join(''));
Notes:
when converting the expression literal to a string you need to ...
How to keep keys/values in same order as declared?
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13 Answers
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Referencing system.management.automation.dll in Visual Studio
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answered Mar 29 '13 at 17:03
skfdskfd
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Get the week start date and week end date from week number
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3
Bear in mind that setting DATEFIRST to anything other than 7 breaks this.
– Tomalak
Aug 12 '09 at 16:...
Easiest way to compare arrays in C#
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Martin Prikryl
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answered Jul 12 '10 at 22:25
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Why did Bootstrap 3 switch to box-sizing: border-box?
I'm migrating my Bootstrap themes from v2.3.2 to v3.0.0 and one thing I noticed is that a lot of dimensions are calculated differently, due to the following styles in bootstrap.css.
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Is it possible to get the iOS 5.1 SDK for Xcode 4.2 on Snow Leopard?
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+100
To get X...
How to check whether a pandas DataFrame is empty?
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edited Dec 15 '17 at 17:37
Dave Thomas
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