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Calculate distance between two latitude-longitude points? (Haversine formula)
...n asked for distance on between points on a WGS84 globe. Not sure how much error creeps in by using a perfect sphere, but I suspect it can be quite a lot depending on where the points are on the globe, thus the distinction is worth bearing in mind.
– redcalx
No...
Best practice for Python assert
...
To be able to automatically throw an error when x become less than zero throughout the function. You can use class descriptors. Here is an example:
class LessThanZeroException(Exception):
pass
class variable(object):
def __init__(self, value=0):
...
Python ValueError: too many values to unpack [duplicate]
...an two keys*, they can't be unpacked into the tuple "k, m", hence the ValueError exception is raised.
In Python 2.x, to iterate over the keys and the values (the tuple "k, m"), we use self.materials.iteritems().
However, since you're throwing the key away anyway, you may as well simply iterate ove...
Logging in Scala
...ke solution is to use a thunk or cluster to delay the concatenation of the error message. A good example of this is Lift's logger
Log.scala
Slf4jLog.scala
Which looks like this:
class Log4JLogger(val logger: Logger) extends LiftLogger {
override def trace(msg: => AnyRef) = if (isTraceEnable...
bower command not found
...6 Jul 17 2012 git
Here is a node-which attempt:
> which.sync('git')
Error: not found: git
I change the permissions (chomd 755 git).
Now node-which can find it.
> which.sync('git')
'/usr/local/bin/git'
Hope this helps.
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Technically what is the main difference between Oracle JDK and OpenJDK? [duplicate]
...ted to play with it for big toys, I started to notice random/unknown fatal error and crashes (with H.264 codecs, etc.), and it was a nightmare till then to get ride of system crash+fatal errors caused by OpenJDK.
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Passing Data between View Controllers
...ControllerB that ViewControllerA is its delegate, otherwise we will get an error.
ViewControllerB *viewControllerB = [[ViewControllerB alloc] initWithNib:@"ViewControllerB" bundle:nil];
viewControllerB.delegate = self
[[self navigationController] pushViewController:viewControllerB animated:YES];
...
ruby system command check exit code
...=> true
system("echo foo | grep bar") #=> false
Furthermore
An error status is available in $?.
system("VBoxManage createvm --invalid-option")
$? #=> #<Process::Status: pid 9926 exit 2>
$?.exitstatus #=> 2
...
How to set environment variables in Python?
...EBUSSY'] = str(myintvariable)
then for retrieval, consider that to avoid errors, you should try
os.environ.get('DEBUSSY', 'Not Set')
possibly substitute '-1' for 'Not Set'
so, to put that all together
myintvariable = 1
os.environ['DEBUSSY'] = str(myintvariable)
strauss = int(os.environ.get('S...
How do I completely uninstall Node.js, and reinstall from beginning (Mac OS X)
...
I tried it but again getting same error Error: The brew link step did not complete successfully
– Chandni
Jul 20 '18 at 2:54
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