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Set default CRAN mirror permanent in R
How can I set a specific CRAN mirror permanently in R?
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What is __future__ in Python used for and how/when to use it, and how it works
...ently appears in Python modules. I do not understand what __future__ is for and how/when to use it even after reading the Python's __future__ doc .
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How to check if an array value exists?
How can I check if $something['say'] has the value of 'bla' or 'omg' ?
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What is the difference between List (of T) and Collection(of T)?
I've seen them used in a lot of the same ways, and I am worried I'm about to go down a path in design that is irreversible if I don't understand this better. Also, I am using .NET.
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What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?
What are the precise rules for when you can omit (omit) parentheses, dots, braces, = (functions), etc.?
6 Answers
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Is the list of Python reserved words and builtins available in a library?
Is the list of Python reserved words and builtins available in a library? I want to do something like:
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Does Java read integers in little endian or big endian?
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Use the network byte order (big endian), which is the same as Java uses anyway. See man htons for the different translators in C.
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Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]
...data frame, which is probably what most readers of this answer will want. For a heatmap, though, you would need to convert this to a true matrix.
library(tidyr)
pivot_wider(tmp, names_from = y, values_from = z)
## # A tibble: 2 x 4
## x a b c
## <fct> <dbl> <dbl> &...
What arguments are passed into AsyncTask?
...tly should I put, and where exactly will it go? Do I need to include all 3 or can I include 1,2,20?
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What are CN, OU, DC in an LDAP search?
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CN = Common Name
OU = Organizational Unit
DC = Domain Component
These are all parts of the X.500 Directory Specification, which defines nodes in a LDAP directory.
You can also read up on LDAP data Interchange Format (LDIF), which is an alternat...