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How to use a variable to specify column name in ggplot
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answered Mar 10 '14 at 19:20
David RobinsonDavid Robinson
68.3k1212 gold badges146146 silver badges171171 bronze badges
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Get the first element of each tuple in a list in Python [duplicate]
...r 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), (...
Android 4.3 menu item showAsAction=“always” ignored
I'm using the new v7 appcompat library available starting from Android 4.3 (API level 18).
12 Answers
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In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
...Beazley's Curious Course on Coroutines is an excellent start. Read slides 24-33 for a quick primer.
Reading data from a generator using yield from
def reader():
"""A generator that fakes a read from a file, socket, etc."""
for i in range(4):
yield '<< %s' % i
def reader_wrap...
Is there a way to break a list into columns?
...er 9 or older: http://caniuse.com/multicolumn
ul {
-moz-column-count: 4;
-moz-column-gap: 20px;
-webkit-column-count: 4;
-webkit-column-gap: 20px;
column-count: 4;
column-gap: 20px;
}
See: http://jsfiddle.net/pdExf/
If IE support is required, you'll have to use JavaScript...
How to call C from Swift?
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edited May 23 '17 at 12:34
Community♦
111 silver badge
answered Jun 2 '14 at 23:14
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open read and close a file in 1 line of code
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edited Nov 26 '15 at 12:24
Robert Siemer
24k77 gold badges6767 silver badges8282 bronze badges
answered...
How can I avoid running ActiveRecord callbacks?
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edited Dec 3 '10 at 4:01
answered Mar 11 '09 at 4:29
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Ruby arrays: %w vs %W
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edited Sep 14 '17 at 3:10
Gavin S. Yancey
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How do you sort an array on multiple columns?
...1
dcpdcp
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