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What do I have to do to get Core Data to automatically migrate models?
I have read the documentation about automatic /lightweight migration for Core Data models - but I am having problems implementing it.
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How to print the full traceback without halting the program?
...cept Exception, err:
try:
exc_info = sys.exc_info()
# do you usefull stuff here
# (potentially raising an exception)
try:
raise TypeError("Again !?!")
except:
pass
# end of useful stuff
finally:
# Display the ...
Is there a performance gain in using single quotes vs double quotes in ruby?
Do you know if using double quotes instead of single quotes in ruby decreases performance in any meaningful way in ruby 1.8 and 1.9.
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Push existing project into Github
... push -f origin master
The -f option on git push forces the push. If you don't use it, you'll see an error like this:
To git@github.com:roseperrone/project.git
! [rejected] master -> master (fetch first)
error: failed to push some refs to 'git@github.com:roseperrone/project.git'
hint: ...
Is there a “do … until” in Python? [duplicate]
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There is no do-while loop in Python.
This is a similar construct, taken from the link above.
while True:
do_something()
if condition():
break
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Python nested functions variable scoping [duplicate]
...'ve read almost all the other questions about the topic, but my code still doesn't work.
10 Answers
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How to exit an if clause
... use return.
Example:
def some_function():
if condition_a:
# do something and return early
...
return
...
if condition_b:
# do something else and return early
...
return
...
return
if outer_condition:
...
some_function()
...
Why do pthreads’ condition variable functions require a mutex?
...ing a mutex just to use as that argument? What is that mutex supposed to do?
10 Answers
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How do you check if a selector matches something in jQuery? [duplicate]
In Mootools, I'd just run if ($('target')) { ... } . Does if ($('#target')) { ... } in jQuery work the same way?
11 Ans...
How do I properly force a Git push?
...
Just do:
git push origin <your_branch_name> --force
or if you have a specific repo:
git push https://git.... --force
This will delete your previous commit(s) and push your current one.
It may not be proper, but if any...