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What is the difference between persist() and merge() in JPA and Hibernate?
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answered Dec 22 '10 at 12:57
axtavtaxtavt
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powershell - extract file name and extension
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answered Mar 20 '12 at 14:45
GoyuixGoyuix
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When to use next() and return next() in Node.js
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edited Apr 30 '17 at 13:01
user6451184
answered May 29 '13 at 10:53
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How to use sessions in an ASP.NET MVC 4 application?
...Jobert Enamno
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Releasing memory in Python
...mport gc
import psutil
proc = psutil.Process(os.getpid())
gc.collect()
mem0 = proc.get_memory_info().rss
# create approx. 10**7 int objects and pointers
foo = ['abc' for x in range(10**7)]
mem1 = proc.get_memory_info().rss
# unreference, including x == 9999999
del foo, x
mem2 = proc.get_memory_in...
Iterating through a JSON object
.... Instead of:
json_raw= raw.readlines()
json_object = json.loads(json_raw[0])
you should really just do:
json_object = json.load(raw)
You shouldn't think of what you get as a "JSON object". What you have is a list. The list contains two dicts. The dicts contain various key/value pairs, all str...
Where to define custom error types in Ruby and/or Rails?
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+50
For Gems
I have seen many times that you define exceptions in this way:
gem_dir/lib/gem_name/exceptions.rb
and defined as:
mod...
In Python, how do I split a string and keep the separators?
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answered Jan 25 '10 at 23:45
Commodore JaegerCommodore Jaeger
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PHP function to get the subdomain of a URL
...: Starting from PHP 5.4 you can simply do:
explode('.', 'en.example.com')[0];
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Xcode 4.5 Storyboard 'Exit'
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in a storyboard
The good news is that there is a session from WWDC 2012 explaining those creatures (among other things).
You can just login to Apple's iOS Dev Center with your developer account details and then go to the WWDC 2012 videos page and watch "Adopting Storyboard in your App" (it'...