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Perform .join on value in array of objects
...rscore.js which has tons of utilities for dealing with arrays, collections etc.
With underscore you could do this easily with one line of code:
_.pluck(arr, 'name').join(', ')
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Convert integer into byte array (Java)
...er what size the input integer is. If you only want 2 bytes, use putShort, etc ...
– bvdb
Jan 26 '15 at 9:07
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Max parallel http connections in a browser?
...reating some suspended connections to an HTTP server (comet, reverse ajax, etc). It works ok, but I see the browser only allows two suspended connections to a given domain simultaneously. So if a user is looking at my website in Tab1 of their browser, then also tries loading it in Tab2, they've used...
Test whether a list contains a specific value in Clojure
...ment. Accordingly, pipelines containing map, filter, remove, reduce, into, etc usually call for the ->> macro." But I guess the convention is more about functions that operate on sequences and return sequences.
– John Wiseman
Jun 6 '18 at 17:56
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Is arr.__len__() the preferred way to get the length of an array in Python?
...ents could still be length-checked. This includes strings, queues, trees, etc.
The functional nature of len() also lends itself well to functional styles of programming.
lengths = map(len, list_of_containers)
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Add a reference column migration in Rails 4
...L adapters are supported. Don't try this with other adapters like sqlite3, etc. Refer to Rails Guides: Foreign Keys for your reference.
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Get itunes link for app before submitting
... Store on your device, which is not the App Store. You're then redirected, etc. The http://... link seems to be directly hooked to the App Store app.
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How do I do top 1 in Oracle?
... * FROM MYTABLE
--ORDER BY COLUMNNAME -OPTIONAL
OFFSET 0 ROWS FETCH NEXT 1 ROWS ONLY
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How do I return early from a rake task?
...ak is a bad idea since it doesn't just jump out of the current proc/method/etc. -- it exits the entire process and skips any code that the caller method may have intended to be run afterwards (including possibly some cleanup). But for a rake task I guess it's probably not a problem...
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How to scp in Python?
...doesn't work outside linux-like systems, has issues with password prompts, etc.
– Foon
Feb 7 '17 at 16:23
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