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How do I create an empty array/matrix in NumPy?
I can't figure out how to use an array or matrix in the way that I would normally use a list. I want to create an empty array (or matrix) and then add one column (or row) to it at a time.
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How can I split a shell command over multiple lines when using an IF statement?
How can I split a command over multiple lines in the shell, when the command is part of an if statement?
2 Answers
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Why is Github asking for username/password when following the instructions on screen and pushing a n
I'm the owner of an organization on github and just created a repo and tried pushing but I'm running into an issue where it's asking me for my username even though I can SSH just fine:
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What exactly do “u” and “r” string flags do, and what are raw string literals?
While asking this question , I realized I didn't know much about raw strings. For somebody claiming to be a Django trainer, this sucks.
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Find if variable is divisible by 2
How do I figure out if a variable is divisible by 2? Furthermore I need do a function if it is and do a different function if it is not.
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Opposite of %in%: exclude rows with values specified in a vector
A categorical variable V1 in a data frame D1 can have values represented by the letters from A to Z. I want to create a subset D2, which excludes some values, say, B, N and T. Basically, I want a command which is the opposite of %in%
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How to delete a specific line in a file?
Let's say I have a text file full of nicknames. How can I delete a specific nickname from this file, using Python?
17 Answe...
How to determine the encoding of text?
I received some text that is encoded, but I don't know what charset was used. Is there a way to determine the encoding of a text file using Python? How can I detect the encoding/codepage of a text file deals with C#.
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How to select multiple rows filled with constants?
Selecting constants without referring to a table is perfectly legal in an SQL statement:
15 Answers
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Are there any disadvantages to always using nvarchar(MAX)?
In SQL Server 2005, are there any disadvantages to making all character fields nvarchar(MAX) rather than specifying a length explicitly, e.g. nvarchar(255)? (Apart from the obvious one that you aren't able to limit the field length at the database level)
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