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Why are arrays covariant but generics are invariant?
...ample, consider writing a function to shuffle an array, or a function that tests two arrays for equality using the Object.equals method on the elements. The implementation does not depend on the exact type of element stored in the array, so it should be possible to write a single function that works...
Shards and replicas in Elasticsearch
...s we have three nodes here? If all these nodes have the same cluster.name: test property set, will it make a Cluster name test which would have three nodes?
– TheCoder
Jul 20 '19 at 15:42
...
How can you diff two pipelines in Bash?
...examples, the diffs won't actually start until both streams have finished. Test this with e.g.:
comm -23 <(seq 100 | sort) <(seq 10 20 && sleep 5 && seq 20 30 | sort)
If this is an issue, you could try sd (stream diff), which doesn't require sorting (like comm does) nor pro...
iPhone App Icons - Exact Radius?
...icon size and design considerations: Icons and Images
Update:
I did some tests in Photoshop CS6 and it seems as though 3 digits after the decimal point is enough precision to end up with the exact same vector (at least as displayed by Photoshop at 3200% zoom). The Round Rect Tool sometimes rounds ...
Using tags in the with other HTML
...
@RobertMcKee: have you actually tested that? I'd expect that usually the entire html page (including all inline style) is parsed before rendering, since usually it's not huge and browsers wait a (very short) while before rendering precisely to avoid the fl...
How to get current path with query string using Capybara
...
I'll probably need this syntax very soon, I'm writing tests for a legacy application. Using current_path.should == is working for now (though I need to add a trailing forward-slash as a string). I'm thanking you in advance for code I'll likely need.
– Tass
...
multiprocessing: sharing a large read-only object between processes?
...ool(processes=4)
pool.map(printx, (1,2,3,4))
With sleep:
$ python26 test_share.py sleep
2504 23000 11639492 [1] 10774408
1
2564 23000 11639492 [2] 10774408
2
2504 -23000 11639384 [1, 3] 10774408
3
4084 23000 11639492 [4] 10774408
4
Without sleep:
$ python26 test_share.py
1148 23000 1163949...
First-time database design: am I overengineering? [closed]
... you eventually get to the point where you have multiple environments (dev/test/staging/prod), you may want to migrate data from one to the other. Have GUID Ids makes this significantly easier.
3- Three layers for your Company -> Division -> Department structure may not be enough. Now, th...
Add unique constraint to combination of two columns
...UAL
ON USER_UND(UUL_USR_IDF, UUL_ATUAL)
WHERE UUL_ATUAL = 1;
Here are my test cases:
SELECT * FROM USER_UND WHERE UUL_USR_IDF = 137
insert into USER_UND values (137, 22, 1) --I CAN NOT => Cannot insert duplicate key row in object 'dbo.USER_UND' with unique index 'UQ_USR_UND_UUL_USR_IDF_UUL_AT...
What blocks Ruby, Python to get Javascript V8 speed? [closed]
... who are working on V8 also created the Self VM (to this day one of the fastest dynamic OO language execution engines ever created), the Animorphic Smalltalk VM (to this day one of the fastest Smalltalk execution engines ever created), the HotSpot JVM (the fastest JVM ever created, probably the fast...