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How to find Array length inside the Handlebar templates?
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edited Jun 29 '15 at 20:25
answered Apr 7 '15 at 21:06
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How do I tell Git to ignore everything except a subdirectory?
...cessary?
– Alex Baker
Apr 29 '15 at 20:25
3
This didn't work for me. I had to add !/bin/ to my ro...
How to install latest version of Node using Brew
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answered Feb 20 '11 at 9:13
Lily BallardLily Ballard
164k2525 gold badges355355 silver badges331331 bronze badges
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Detach many subdirectories into a new, separate Git repository
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Eugene Yokota
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answered Jul 25 '13 at 20:15
David SmileyDavid Smiley
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How can I do division with variables in a Linux shell?
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200
Those variables are shell variables. To expand them as parameters to another program (ie expr...
When to use: Java 8+ interface default method, vs. abstract method
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320
There's a lot more to abstract classes than default method implementations (such as private sta...
How to map and remove nil values in Ruby
... 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.even? }
# => [4, 16, 20]
In your case, as the block evaluates to falsey, simply:
items.filter_map { |x| process_x url }
"Ruby 2.7 adds Enumerable#filter_map" is a good read on the subject, with some performance benchmarks against some of the...
Is it possible to use Swift's Enum in Obj-C?
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edited Nov 20 '19 at 9:09
answered Feb 10 '15 at 16:02
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- how to allow only one item selected?
...iced. thanks
– simPod
Mar 17 '11 at 20:48
7
@simPod the reasoning being because there are times w...
Assign pandas dataframe column dtypes
...df = pd.DataFrame({'x': {0: 'a', 1: 'b'}, 'y': {0: '1', 1: '2'}, 'z': {0: '2018-05-01', 1: '2018-05-02'}})
df.dtypes
x object
y object
z object
dtype: object
df
x y z
0 a 1 2018-05-01
1 b 2 2018-05-02
You can apply these to each column you want to convert:
df["y"]...