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Haversine Formula in Python (Bearing and Distance between two GPS points)
...fy math.pi, math.sin etc. With from math import * you get direct access to all the module contents. Check out "namespaces" in a python tutorial (such as docs.python.org/tutorial/modules.html)
– Michael Dunn
Feb 6 '11 at 21:20
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Populating a ListView using an ArrayList?
... @ Amokrane Chentir: I think that the "setContentView" method must be called before "findViewById" or else no ListView will be found.
– Petru
Jun 26 '12 at 20:36
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How to use Git and Dropbox together effectively?
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I think that Git on Dropbox is great. I use it all the time. I have multiple computers (two at home and one at work) on which I use Dropbox as a central bare repository. Since I don’t want to host it on a public service, and I don’t have access to a server that I can ...
Remove duplicate lines without sorting [duplicate]
...e unique lines. This of course could end up being the whole file though if all the lines are unique.
– deltaray
Jul 11 '18 at 17:33
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input type=“submit” Vs button tag are they interchangeable?
...an INPUT element whose type is set to "image", but the BUTTON element type allows content.
So for functionality only they're interchangeable!
(Don't forget, type="submit" is the default with button, so leave it off!)
shar...
Use tab to indent in textarea
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I don't usually copy code straight from Stackoverflow and paste it into my project and have it work, but when I do, it was this code. Thanks for this.
– Flat Cat
Dec 15 '14 at 14:58
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How to initialize an array in one step using Ruby?
...rray = [ '1', '2', '3' ]
You can also use a range:
array = ('1'..'3').to_a # parentheses are required
# or
array = *('1'..'3') # parentheses not required, but included for clarity
For arrays of whitespace-delimited strings, you can use Percent String syntax:
array = %w[ 1 2 3 ]
You can...
How do I pass a variable by reference?
...le type
Let's try to modify the list that was passed to a method:
def try_to_change_list_contents(the_list):
print('got', the_list)
the_list.append('four')
print('changed to', the_list)
outer_list = ['one', 'two', 'three']
print('before, outer_list =', outer_list)
try_to_change_list_...
Find and replace in file and overwrite file doesn't work, it empties the file
...l in the command line it opens the file index.html for writing, wiping off all its previous contents.
To fix this you need to pass the -i option to sed to make the changes inline and create a backup of the original file before it does the changes in-place:
sed -i.bak s/STRING_TO_REPLACE/STRING_TO_...
AngularJs ReferenceError: $http is not defined
... I wonder why Angular's own documentation (docs.angularjs.org/tutorial/step_05) has this error.
– Anurag
Oct 9 '13 at 11:49
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