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NameError: global name 'unicode' is not defined - in Python 3
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If you need to have the script keep working on python2 and 3 as I did, this might help someone
import sys
if sys.version_info[0] >= 3:
unicode = str
and can then just do for example
foo = unicode.lower(foo)
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Run a callback only if an attribute has changed in Rails
...ods/Dirty.html
Before Saving (OPTIONAL CHANGE)
After modifying an object and before saving to the database, or within the before_save filter:
changes should now be changes_to_save
changed? should now be has_changes_to_save?
changed should now be changed_attribute_names_to_save
<attribute>_...
Why use @Scripts.Render(“~/bundles/jquery”)
... any formatting (also referred as minified) into a single file for saving bandwith and number of requests to load a page.
As example you could create your own bundle:
bundles.Add(New ScriptBundle("~/bundles/mybundle").Include(
"~/Resources/Core/Javascripts/jquery-1.7.1.min.js",
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What does Bump Version stand for?
...hnical consideration I have about version bump (only in the context of sbt and Maven projects) is that development should only happen with -SNAPSHOT versions. This also helps avoid two people bumping the version unaware of each other. 1. bump from -SNAPSHOT to a release (with same version number). 2...
Can a JSON value contain a multiline string
...in your string. However you may encode it using whatever combination of \n and \r you require.
The JSONLint tool confirms that your JSON is invalid.
Update: And if you want to write newlines inside your JSON syntax without actually including newlines in the data, then you're even doubly out of l...
Coredata Error “data: ”
...ou access one of the properties, core data will go to the persistent store and fetch the rest of your values, then you'll get the full description in the logs.
This seems to be such a common misunderstanding that I decided to write about it, here.
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Rollback to last git commit
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Caveat Emptor - Destructive commands ahead.
Mitigation - git reflog can save you if you need it.
1) UNDO local file changes and KEEP your last commit
git reset --hard
2) UNDO local file changes and REMOVE your last commit
git reset --hard HEAD^
3)...
How do ports work with IPv6?
...t changed between the two versions is the addressing scheme, DHCP [DHCPv6] and ICMP [ICMPv6]. So basically, anything TCP/UDP related, including the port range (0-65535) remains unchanged.
Edit: Port 0 is a reserved port in TCP but it does exist. See RFC793
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Setting Vim whitespace preferences by filetype
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there are many ways, but here's a simple, easy to understand way. add these lines to your ~/.vimrc:
autocmd FileType html setlocal ts=2 sts=2 sw=2
autocmd FileType ruby setlocal ts=2 sts=2 sw=2
autocmd FileType javascript setlocal ts=4 sts=4 sw=4
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How can I convert a file pointer ( FILE* fp ) to a file descriptor (int fd)?
... function is int fileno(FILE *stream). It can be found in <stdio.h>, and is a POSIX standard but not standard C.
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