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Can someone explain mappedBy in JPA and Hibernate?
... I'm a little confused by your description in the end about mappedBy. Does it matter how things are organised in db ? @DB: AirlineFlights has idAirline as the Foreign Key. Airline just have idAirline as Primary key and does not mantain info about AirlineFlights @ DB.
– bra...
How do I time a method's execution in Java?
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nanoTime does not guarantee accuracy better than currentTimeMillis(), though it usually does. forums.sun.com/thread.jspa?messageID=9460663 and simongbrown.com/blog/2007/08/20/…
– James Schek
Oc...
How does one escape backslashes and forward slashes in VIM find/search?
For instance, if I wanted to a find and replace with strings containing backward or forward slashes, how would this be accomplished in vim? Thank you!
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C++ performance challenge: integer to std::string conversion
...ion with x64 VC++ 2005 on Core i7 920 (16.2M ops/s vs. 14.8M ops/s), _ltoa does 8.5M ops/s and sprintf() does 3.85M ops/s.
– Eugene Smith
Dec 4 '10 at 2:40
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How to create Windows EventLog source from command line?
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@PaulChavez if the named source doesn't exist, it is created.
– Farinha
Oct 17 '13 at 13:27
1
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What is the “hasClass” function with plain JavaScript?
...ctive one liner that
returns a boolean (as opposed to Orbling's answer)
Does not return a false positive when searching for thisClass on an element that has class="thisClass-suffix".
is compatible with every browser down to at least IE6
function hasClass( target, className ) {
return new ...
Pythonic way to print list items
...print(p) for p in myList not working, you can just use the following which does the same thing and is still one line:
for p in myList: print p
For a solution that uses '\n'.join(), I prefer list comprehensions and generators over map() so I would probably use the following:
print '\n'.join(str(p...
Converting between java.time.LocalDateTime and java.util.Date
...e-zone is not part of the actual state of java.util.Date.
An Instant also does not contain any information about the time-zone. Thus, to convert from an Instant to a local date-time it is necessary to specify a time-zone. This might be the default zone - ZoneId.systemDefault() - or it might be a ti...
Post-install script with Python setuptools
...n even call shell commands during installation, like in this example which does pre-installation preparation:
from setuptools import setup
from setuptools.command.develop import develop
from setuptools.command.install import install
from subprocess import check_call
class PreDevelopCommand(develo...
Reference: What is variable scope, which variables are accessible from where and what are “undefined
...". Just because you wrote $foo = 'bar'; once somewhere in your application doesn't mean you can refer to $foo from everywhere else inside the application. The variable $foo has a certain scope within which it is valid and only code in the same scope has access to the variable.
How is a scope define...