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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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Microsoft Web API: How do you do a Server.MapPath?
...with a mock.
– Sean B
Sep 17 '15 at 20:23
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What is the Difference Between read() and recv() , and Between send() and write()?
...r example :)
– Abhinav Gauniyal
Jul 20 '17 at 12:12
1
@Mecki what does a non-blocking successful ...
How to make a DIV visible and invisible with JavaScript
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20
No, use document.getElementById('id-of-the-div') instead of [DIV]
– ThiefMaster
Feb 26 '12 at 19:26
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How do I add PHP code/file to HTML(.html) files?
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John CondeJohn Conde
202k8888 gold badges406406 silver badges453453 bronze badges
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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"]...
How to detect IE11?
... != null))); }
– rg89
Nov 26 '13 at 20:59
6
@lzkata - Per the html5 spec here, IE is actually fol...
when using AlertDialog.Builder with EditText, the Soft Keyboard doesn't pop
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edited Apr 13 '14 at 20:50
mcont
1,42611 gold badge1717 silver badges2929 bronze badges
answered Ju...
Cross browser JavaScript (not jQuery…) scroll to top animation
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