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How to find gaps in sequential numbering in mysql?
...t on 100 rows):
SELECT (t1.id + 1) as gap_starts_at,
(SELECT MIN(t3.id) -1 FROM arrc_vouchers t3 WHERE t3.id > t1.id) as gap_ends_at
FROM arrc_vouchers t1
WHERE NOT EXISTS (SELECT t2.id FROM arrc_vouchers t2 WHERE t2.id = t1.id + 1)
HAVING gap_ends_at IS NOT NULL
gap_starts_at - first...
Select objects based on value of variable in object using jq
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What is the difference between sites-enabled and sites-available directory?
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How to change value of object which is inside an array using JavaScript or jQuery?
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Does Ruby have a string.startswith(“abc”) built in method?
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340
It's called String#start_with?, not String#startswith: In Ruby, the names of boolean-ish metho...
Comparing arrays in JUnit assertions, concise built-in way?
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302
Use org.junit.Assert's method assertArrayEquals:
import org.junit.Assert;
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Assert.assertA...
Undo svn add without reverting local edits
...ov 19 '11 at 21:56
Nostradamus1935Nostradamus1935
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Loop backwards using indices in Python?
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Try range(100,-1,-1), the 3rd argument being the increment to use (documented here).
("range" options, start, stop, step are documented here)
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Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
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143
Yes, it's subassignment in R using <- (or = or ->) that makes a copy of the whole object. ...
Uninstall / remove a Homebrew package including all its dependencies
... argument.
– Shmidt
Sep 20 '14 at 8:37
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The third party brew rmtree script is now available in a...