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Get the first element of each tuple in a list in Python [duplicate]
... for x in rows]
Below is a demonstration:
>>> rows = [(1, 2), (3, 4), (5, 6)]
>>> [x[0] for x in rows]
[1, 3, 5]
>>>
Alternately, you could use unpacking instead of x[0]:
res_list = [x for x,_ in rows]
Below is a demonstration:
>>> lst = [(1, 2), (3, 4)...
Is unsigned integer subtraction defined behavior?
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bdonlanbdonlan
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2
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How to hash a password
...e use the recommendations from the https://stackoverflow.com/a/10402129/251311 instead.
You can either use
var md5 = new MD5CryptoServiceProvider();
var md5data = md5.ComputeHash(data);
or
var sha1 = new SHA1CryptoServiceProvider();
var sha1data = sha1.ComputeHash(data);
To get data as byte a...
public friend swap member function
...d if it will be considered during a function call. For the details, read §3.4.2. In this case, std::swap normally isn't considered; but we can associate it (add it to the set of overloads considered by unqualified swap), allowing it to be found.
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When should I use Lazy?
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James Michael HareJames Michael Hare
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Scala constructor overload?
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Jon McAuliffeJon McAuliffe
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Correctly determine if date string is a valid date in that format
... Originally written by Glavić.]
Test cases:
var_dump(validateDate('2013-13-01')); // false
var_dump(validateDate('20132-13-01')); // false
var_dump(validateDate('2013-11-32')); // false
var_dump(validateDate('2012-2-25')); // false
var_dump(validateDate('2013-12-01')); // true
var_dump(val...
What jsf component can render a div tag?
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235
You can create a DIV component using the <h:panelGroup/>.
By default, the <h:panelGrou...
How to get UTC timestamp in Ruby?
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edited Jul 6 '13 at 8:50
answered May 31 '10 at 11:09
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How to pass arguments to a Button command in Tkinter?
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edited May 4 '15 at 0:43
nbro
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answered Au...