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In a django model custom save() method, how should you identify a new object?
...t self._state is not a private instance variable, but named that way to avoid conflicts, checking self._state.adding is now the preferable way to check.
self.pk is None:
returns True within a new Model object, unless the object has a UUIDField as its primary_key.
The corner case you might have...
can we use xpath with BeautifulSoup?
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As others have said, BeautifulSoup doesn't have xpath support. There are probably a number of ways to get something from an xpath, including using Selenium. However, here's a solution that works in either Python 2 or 3:
from lxml import ht...
Difference between Apache CXF and Axis
...supports for WS-Addressing, WS-Policy, WS-RM, WS-Security and WS-I BasicProfile.
CXF implements JAX-WS API (according by JAX-WS 2.0 TCK).
CXF has better integration with Spring and other frameworks.
CXF has high extensibility in terms of their interceptor strategy.
CXF has more configurable feature ...
How to set current working directory to the directory of the script in bash?
...he script is called with bash script.sh -- $0 will just be the name of the file
– Chris Watts
May 8 '15 at 15:06
2
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Difference between 'struct' and 'typedef struct' in C++?
...annot be forward declared. So for the typedef option you must #include the file containing the typedef, meaning everything that #includes your .h also includes that file whether it directly needs it or not, and so on. It can definitely impact your build times on larger projects.
Without the typedef...
#ifdef vs #if - which is better/safer as a method for enabling/disabling compilation of particular s
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We have had this same problem across multiple files and there is always the problem with people forgetting to include a "features flag" file (With a codebase of > 41,000 files it is easy to do).
If you had feature.h:
#ifndef FEATURE_H
#define FEATURE_H
// turn on c...
The target … overrides the `OTHER_LDFLAGS` build setting defined in `Pods/Pods.xcconfig
I have incorporate SpatialIite into a Xcode project which uses a header file from Proj.4 , just one header. Both are Xcode projects and have static targets.
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Is there a native jQuery function to switch elements?
...it will be moved before the target (not cloned)".
– Ridcully
Jan 11 '12 at 15:55
12
I like this o...
Chrome Uncaught Syntax Error: Unexpected Token ILLEGAL [duplicate]
Receiving the subject error when Chrome tries to load the script file on the page. It says it's at the last line of the javascript file. I can't seem to find anything wrong with it. No errors in firefox, and the script works as expected. Just using form validation
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How to remove unreferenced blobs from my git repo
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A git object is a compressed file or tree or commit in your git repo, including old stuff from the history. git gc clears out unneeded objects. It keeps objects which are still needed for your current repo, and its history.
– Sam ...