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How do I create an average from a Ruby array?
... } / arr.size
=> 6.5
You can define it as part of Array as another commenter has suggested, but you need to avoid integer division or your results will be wrong. Also, this isn't generally applicable to every possible element type (obviously, an average only makes sense for things that can be a...
Split string to equal length substrings in Java
... there was no previous match, it matches the beginning of the input, the same as \A. The enclosing lookbehind matches the position that's four characters along from the end of the last match.
Both lookbehind and \G are advanced regex features, not supported by all flavors. Furthermore, \G is not ...
Why do you need to put #!/bin/bash at the beginning of a script file?
...S:
The exclamation mark (!) is affectionately called "bang". The shell comment symbol (#) is sometimes called "hash".
PPS:
Remember - under *nix, associating a suffix with a file type is merely a convention, not a "rule". An executable can be a binary program, any one of a million script types an...
How to read a file in reverse order?
...
for line in reversed(open("filename").readlines()):
print line.rstrip()
And in Python 3:
for line in reversed(list(open("filename"))):
print(line.rstrip())
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What is the function of the DBMDL File in VS database project
...our db model and is used as a cache for improving the performance of deployment. It is unique per user thus should not be checked into source control.
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Position geom_text on dodged barplot
...1) instead of position = "dodge", which is just a shortcut without any parameter.
In ggplot2_2.0.0 you find several examples in ?geom_text on how to position geom_text on dodged or stacked bars (the code chunk named "# Aligning labels and bars"). The Q&A What is the width argument in positi...
Vertically centering a div inside another div [duplicate]
... align middle works, but you will have to use table-cell on your parent element and inline-block on the child.
This solution is not going to work in IE6 & 7. Yours is the safer way to go for those. But since you tagged your question with CSS3 and HTML5 I was thinking that you don't mind using a...
How to convert JSON data into a Python object
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UPDATE
With Python3, you can do it in one line, using SimpleNamespace and object_hook:
import json
from types import SimpleNamespace
data = '{"name": "John Smith", "hometown": {"name": "New York", "id": 123}}'
# Parse JSON into an object with attributes corresponding to dict keys.
x =...
How to set date format in HTML date input tag?
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You don't.
Firstly, your question is ambiguous - do you mean the format in which it is displayed to the user, or the format in which it is transmitted to the web server?
If you mean the format in which it is displayed to the user, then this is down to the end-user interface, not ...
Using Git, how could I search for a string across all branches?
...GitHub. You can also filter by:
the language: language:
the repository name (including the username): repo:
the file path: path:
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