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What is the pythonic way to avoid default parameters that are empty lists?
...he right tool depends on the case — a varargs function is very different from one that takes an (optional) list argument. Situations where you'd have to choose between them come up less often than you'd think. Varargs is great when the arg count changes, but is fixed when the code is WRITTEN. Like...
Strip spaces/tabs/newlines - python
...
Use str.split([sep[, maxsplit]]) with no sep or sep=None:
From docs:
If sep is not specified or is None, a different splitting algorithm is
applied: runs of consecutive whitespace are regarded as a single
separator, and the result will contain no empty strings at the start
...
Which is better: … or …
...ersions of all the major browsers (including Internet Explorer 9). A quote from the relevant RFC:
This document thus defines text/javascript and text/ecmascript but marks them as "obsolete". Use of experimental and unregistered media types, as listed in part above, is discouraged. The media ty...
Why does my JavaScript code receive a “No 'Access-Control-Allow-Origin' header is present on the req
...
When you are using postman they are not restricted by this policy. Quoted from Cross-Origin XMLHttpRequest:
Regular web pages can use the XMLHttpRequest object to send and receive data from remote servers, but they're limited by the same origin policy. Extensions aren't so limited. An extension...
Paperclip::Errors::MissingRequiredValidatorError with Rails 4
...o_not_validate_attachment_file_type . As Rdocs puts it: Thanks to a report from Egor Homakov we have taken steps to prevent people from spoofing Content-Types and getting data you weren't expecting onto your server.
– user1322092
Aug 13 '14 at 1:07
...
What are attributes in .NET?
..., args);
}
}
Declaring them is easy, just make a class that inherits from Attribute.
public class DisplayOrderAttribute : Attribute
{
private int order;
public DisplayOrderAttribute(int order)
{
this.order = order;
}
public int Order
{
get { return o...
Execute command on all files in a directory
...ec cmd option {} \; > results.out
-maxdepth 1 argument prevents find from recursively descending into
any subdirectories. (If you want such nested directories to get processed, you can omit this.)
-type -f specifies that only plain files will be processed.
-exec cmd option {} tells it to run ...
What is the difference between a .xib file and a .storyboard?
...mplate, you will see that a window is created for you in the app delegate. From there you can add XIB files as normal, or a new storyboard.
I'm assuming you mean "storyboards" rather than "timeline". Storyboards allow you to map out, visually, all of the views in your applications and how they inte...
How to search through all Git and Mercurial commits in the repository for a certain string?
...reflogs
Instead of walking the commit ancestry chain, walk reflog entries from
the most recent one to older ones.
So you could do this to find a particular string in a commit message that is dangling:
git log -g --grep=search_for_this
Alternatively, if you want to search the changes for a pa...
Ignore mouse interaction on overlay image
... sure you test it in all major browsers. IE interprets z-index differently from FF.
For somebody to come up with more details, you would have to post more info, a link would be best.
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