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Haversine Formula in Python (Bearing and Distance between two GPS points)
...
Here's a Python version:
from math import radians, cos, sin, asin, sqrt
def haversine(lon1, lat1, lon2, lat2):
"""
Calculate the great circle distance between two points
on the earth (specified in decimal degrees)
"""
# convert ...
Local dependency in package.json
...pecify local Node module installation paths in your package.json directly. From the docs:
Local Paths
As of version 2.0.0 you can provide a path to a local directory that contains a package. Local paths can be saved using npm install -S or npm install --save, using any of these forms:
../foo/bar
~/...
Add .gitignore to gitignore
...ignore file's purpose is to prevent everyone who collaborates on a project from accidentally commiting some common files in a project, such as generated cache files. Therefore you should not ignore .gitignore, since it's supposed to be included in the repository.
If you want to ignore files in just...
How to retrieve the hash for the current commit in Git?
... length to --short, such as --short=12, to get a specific number of digits from the hash.
– Tyson Phalp
Feb 21 '14 at 17:18
35
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Only using @JsonIgnore during serialization, but not deserialization
I have a user object that is sent to and from the server. When I send out the user object, I don't want to send the hashed password to the client. So, I added @JsonIgnore on the password property, but this also blocks it from being deserialized into the password that makes it hard to sign up users...
What is the difference between ng-if and ng-show/ng-hide
...on assigned to ngIf evaluates to a false value then the element is removed from the DOM, otherwise a clone of the element is reinserted into the DOM.
<!-- when $scope.myValue is truthy (element is restored) -->
<div ng-if="1"></div>
<!-- when $scope.myValue is falsy (element i...
Using the “final” modifier whenever applicable in Java [closed]
...ticing the word itself and will simply think, that-thing-will-never-change-from-this-point-on (you can take it from me ;-)
I think it's good practice. I am not using it all the time, but when I can and it makes sense to label something final I'll do it.
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Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
...umber of cache lines in your cache. L is always power of 2.
The six comes from fact that 2^6 == 64 bytes is standard size of cache line.
Now what does this mean? Well it means that if I have address X and address Y and
(X >> 6) - (Y >> 6) is divisible by L (i.e. some large power of 2)...
Is memcached a dinosaur in comparison to Redis? [closed]
... excellent tool still and VERY reliable.
instead of looking at this issue from the perspective getting down the who is faster at the < 100 ms range, look at the performance per "class" of the software.
Does it use only local ram? -> fastest
Does it use remote ram? -> fast
Does it use ram...
How to use a decimal range() step value?
...r is likely to give you a wrong result.
You can use the linspace function from the NumPy library (which isn't part of the standard library but is relatively easy to obtain). linspace takes a number of points to return, and also lets you specify whether or not to include the right endpoint:
>>...