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How to import the class within the same directory or sub directory?
... What do you do if the module you're trying to import has no classes? Just raw functions? In python 2 all I had to do was 'import module'. Doesn't work in python 3, neither does 'import .module'
– Frikster
Sep 26 '16 at 4:23
...
Regular Expression for alphanumeric and underscores
...ntation at the above links states that \w will "Match any character in the range 0 - 9, A - Z and a - z (equivalent of POSIX [:alnum:])", I have not found this to be true. Not with grep -P anyway. You need to explicitly include the underscore if you use [:alnum:] but not if you use \w. You can't bea...
Hash Map in Python
...class HashMap:
def __init__(self):
self.store = [None for _ in range(16)]
def get(self, key):
index = hash(key) & 15
if self.store[index] is None:
return None
n = self.store[index]
while True:
if n.key == key:
...
How can I check if an element exists in the visible DOM?
...he project I'm working on, I'm not able to use a library. Good-ol' fashion raw code only. I'm aware of that jQuery method, but it does not work on elements not wrapped in the jQuery container. For example, $('#elementId')[0].length would not produce the same result.
– Justin Bu...
Filter dataframe rows if value in column is in a set list of values [duplicate]
...
you can also use ranges by using:
b = df[(df['a'] > 1) & (df['a'] < 5)]
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I have 2 dates in PHP, how can I run a foreach loop to go through all of those days?
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Copy from php.net sample for inclusive range:
$begin = new DateTime( '2012-08-01' );
$end = new DateTime( '2012-08-31' );
$end = $end->modify( '+1 day' );
$interval = new DateInterval('P1D');
$daterange = new DatePeriod($begin, $interval ,$end);
foreach($da...
What's the best way to convert a number to a string in JavaScript? [closed]
...like this for simple convenience, over 1,000s of iterations it appears for raw speed there is an advantage for .toString()
See Performance tests here (not by me, but found when I went to write my own):
http://jsben.ch/#/ghQYR
Fastest based on the JSPerf test above: str = num.toString();
It should...
How to get Ruby / Homebrew / RVM to work on Yosemite?
...mand line tools for Xcode 6
Reinstall brew:
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Once brew is installed, rvm will work:
rvm install ruby
Worked for me, yahoo!
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How to add parameters to HttpURLConnection using POST using NameValuePair
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Maybe you can use raw mode when building URL object, something like this: URL url = new URL("http://yoururl.com?k1=v1&k2=v2&···&kn=vn"); then when set conn to use POST method don't need to write them.
– ale...
How do I check that multiple keys are in a dict in a single pass?
...andom import randint as R;d=dict((str(R(0,1000000)),R(0,1000000)) for i in range(D));q=dict((str(R(0,1000000)),R(0,1000000)) for i in range(Q));print("looking for %s items in %s"%(len(q),len(d)))'''
>>> Timer('set(q) <= set(d)','D=1000000;Q=100;'+setup).timeit(1)
looking for 100 items i...