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Create a variable name with “paste” in R?
...a bit neater
– Louis Maddox
Apr 30 '15 at 6:23
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Get the client's IP address in socket.io
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edited Sep 25 '15 at 14:19
Balthazar
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find without recursion
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Rob Bednark
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answered Oct 13 '10 at 15:35
eldarerathiseldarer...
Select first 4 rows of a data.frame in R
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156
Use head:
dnow <- data.frame(x=rnorm(100), y=runif(100))
head(dnow,4) ## default is 6
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How to get the anchor from the URL using jQuery?
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Remember to use location.hash.slice(1) if you don't want the hash tag in the final string!
– Sandy Gifford
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Can PostgreSQL index array columns?
...CREATE TABLE "Test"("Column1" int[]);
INSERT INTO "Test" VALUES ('{10, 15, 20}');
INSERT INTO "Test" VALUES ('{10, 20, 30}');
CREATE INDEX idx_test on "Test" USING GIN ("Column1");
-- To enforce index usage because we have only 2 records for this test...
SET enable_seqscan TO ...
How to rename items in values() in Django?
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answered May 15 '12 at 10:45
Daniel RosemanDaniel Roseman
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Repeat each row of data.frame the number of times specified in a column
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Sam Firke
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answered Feb 1 '18 at 21:12
einareinar
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Where is JAVA_HOME on macOS Mojave (10.14) to Lion (10.7)?
...space.
– prodigitalson
Jul 6 '11 at 15:38
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this didn't work for me. /System/Library/Frameworks/...
Setting JDK in Eclipse
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Chris GerkenChris Gerken
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