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PostgreSQL LIKE query performance variations
...ram indexes to support all LIKE and ILIKE patterns, not just left-anchored ones:
Example index:
CREATE INDEX tbl_col_gin_trgm_idx ON tbl USING gin (col gin_trgm_ops);
Or:
CREATE INDEX tbl_col_gist_trgm_idx ON tbl USING gist (col gist_trgm_ops);
Difference between GiST and GIN index
Example...
How to SSH to a VirtualBox guest externally through a host? [closed]
... guest Linux VirtualBox VM is port forwarding. By default, you should have one interface already which is using NAT. Then go to the Network settings and click the Port Forwarding button. Add a new Rule. As the rule name, insert "ssh". As "Host port", insert 3022. As "Guest port", insert 22. Everyth...
How to debug apk signed for release?
...pk which I've signed and uploaded to Android Market, and installed on my phone. I would like to debug this release apk (by means of Eclipse) whilst it is running on my phone. I have done this before (and remember it being with one of the Android development tools; perhaps Dalvik Debug Monitor) but u...
Inserting HTML elements with JavaScript
...o help each other become better at what we do! And sorry, but where did anyone mention "AJAX"?
– James
May 2 '09 at 20:50
1
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SourceKitService Terminated
...minated" is popping up and all syntax highlighting and code completion is gone in Swift. How can I fix this?
34 Answers
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Script to kill all connections to a database (More than RESTRICTED_USER ROLLBACK)
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good one and quick. Only problem could be system spid so u can add WHERE dbid = db_id('My_db') and spid > 50
– Saurabh Sinha
Nov 25 '14 at 19:17
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how to create a Java Date object of midnight today and midnight tomorrow?
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LocalTime midnight = LocalTime.MIDNIGHT;
LocalDate today = LocalDate.now(ZoneId.of("Europe/Berlin"));
LocalDateTime todayMidnight = LocalDateTime.of(today, midnight);
LocalDateTime tomorrowMidnight = todayMidnight.plusDays(1);
Joda-Time
If you're using a JDK < 8, I recommend Joda Time, beca...
How do you create a transparent demo screen for an Android app?
... location) or View.getLocationInWindow(int[] location). I'm not sure which one is better.
– Benito Bertoli
Aug 31 '12 at 8:01
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How to determine if a decimal/double is an integer?
...ine((d % 1) == 0);
}
Output:
False
True
Update: As @Adrian Lopez mentioned below, comparison with a small value epsilon will discard floating-point computation mis-calculations. Since the question is about double values, below will be a more floating-point calculation proof answer:
Math.Abs(d ...
How to update Ruby to 1.9.x on Mac?
... Wandering between posts which lead me to other problems, I found this one very helpful as it explains how to use RVM, not only use it.
– Hector Ordonez
Feb 25 '15 at 10:12
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