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What does the git index contain EXACTLY?
...ns an article on what an index includes:
The index is a binary file (generally kept in .git/index) containing a sorted list of path names, each with permissions and the SHA1 of a blob object; git ls-files can show you the contents of the index:
$ git ls-files --stage
100644 63c918c667fa005ff12ad89...
How to remove all whitespace from a string?
...\r\v\fy \t\n\r\v\f"
## [4] NA
The base R approach: gsub
gsub replaces all instances of a string (fixed = TRUE) or regular expression (fixed = FALSE, the default) with another string. To remove all spaces, use:
gsub(" ", "", x, fixed = TRUE)
## [1] "xy" "←→" ...
How to capture Curl output to a file?
...if an old one exists).
curl -K myconfig.txt >> output.txt
Appends all output you receive to the specified file.
Note: The -K is optional.
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What is the proper way to comment functions in Python?
Is there a generally accepted way to comment functions in Python? Is the following acceptable?
10 Answers
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What's the difference between django OneToOneField and ForeignKey?
...Guide to Django:
OneToOneField
A one-to-one relationship. Conceptually, this is similar to a ForeignKey with unique=True, but the "reverse" side of the relation will directly return a single object.
In contrast to the OneToOneField "reverse" relation, a ForeignKey "reverse" relation retur...
What is a clean, pythonic way to have multiple constructors in Python?
...
Actually None is much better for "magic" values:
class Cheese():
def __init__(self, num_holes = None):
if num_holes is None:
...
Now if you want complete freedom of adding more parameters:
class Cheese...
Simultaneously merge multiple data.frames in a list
...ch data.frame differs in terms of the number of rows and columns, but they all share the key variables (which I've called "var1" and "var2" in the code below). If the data.frames were identical in terms of columns, I could merely rbind , for which plyr's rbind.fill would do the job, but that'...
Windows XP or later Windows: How can I run a batch file in the background with no window displayed?
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Do you need the second batch file to run asynchronously? Typically one batch file runs another synchronously with the call command, and the second one would share the first one's window.
You can use start /b second.bat to launch a second batch file asynchronously from your first that s...
How to use icons and symbols from “Font Awesome” on Native Android Application
...entry in strings.xml for each icon. Eg for a heart:
<string name="icon_heart">&#xf004;</string>
Referenced said entry in the view of my xml layout:
<Button
android:id="@+id/like"
style="?android:attr/buttonStyleSmall"
...
android:text="@string/icon_heart" ...
How do I split a string with multiple separators in javascript?
...ntation of JavaScript in Java: mozilla.org/rhino (... or "sudo apt-get install rhino").
– Aaron Maenpaa
Mar 16 '09 at 11:39
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