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Print a list in reverse order with range()?
... may be less intuitive but as the comments mention, this is more efficient and the right usage of range for reversed list.
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Using getopts to process long and short command line options
I wish to have long and short forms of command line options invoked using my shell script.
32 Answers
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Most efficient method to groupby on an array of objects
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Here is one that outputs array and not object: groupByArray(xs, key) { return xs.reduce(function (rv, x) { let v = key instanceof Function ? key(x) : x[key]; let el = rv.find((r) => r && r.key === v); ...
What regular expression will match valid international phone numbers?
...rmat for matching a generic international phone number. I replaced the US land line centric international access code 011 with the standard international access code identifier of '+', making it mandatory. I also changed the minimum for the national number to at least one digit.
Note that if you en...
Catching error codes in a shell pipe
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If you really don't want the second command to proceed until the first is known to be successful, then you probably need to use temporary files. The simple version of that is:
tmp=${TMPDIR:-/tmp}/mine.$$
if ./a > $tmp.1
then
if ./b <$tmp.1 >$tmp.2
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How do I upgrade my ruby 1.9.2-p0 to the latest patch level using rvm?
...2.
Finally, to install the new ruby version, just run rvm install 1.9.2 - and wait for it to compile!
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Maintain aspect ratio of div but fill screen width and height in CSS?
...ite to put together that has a fixed aspect ratio of approximately 16:9 landscape, like a video.
9 Answers
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Python 3: UnboundLocalError: local variable referenced before assignment [duplicate]
...ather than relying on Globals
def function(Var1, Var2):
if Var2 == 0 and Var1 > 0:
print("Result One")
elif Var2 == 1 and Var1 > 0:
print("Result Two")
elif Var1 < 1:
print("Result Three")
return Var1 - 1
function(1, 1)
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How to detect Safari, Chrome, IE, Firefox and Opera browser?
I have 5 addons/extensions for FF, Chrome, IE, Opera, and Safari.
24 Answers
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How do I create and read a value from cookie?
How can I create and read a value from a cookie in JavaScript?
19 Answers
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