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How does zip(*[iter(s)]*n) work in Python?
...and it pulls an item from the iterator each time.
x = iter([1,2,3,4,5,6,7,8,9])
print zip(x, x, x)
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How to produce a range with step n in bash? (generate a sequence of numbers with increments)
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edited Feb 18 '15 at 18:36
Rob Bednark
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Efficient SQL test query or validation query that will work across all (or most) databases
...FORMATION_SCHEMA.SYSTEM_USERS
or
CALL NOW()
HSQLDB (tested with version 1.8.0.10)
Note: I tried using a WHERE 1=0 clause on the second query, but it didn't work as a value for Apache Commons DBCP's validationQuery, since the query doesn't return any rows
VALUES 1 or SELECT 1 FROM SYSIBM.SYSDUMM...
MySQL: Set user variable from result of query
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edited Oct 8 '10 at 8:18
answered Oct 8 '10 at 8:08
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How do I convert seconds to hours, minutes and seconds?
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edited Feb 5 '19 at 18:31
Božo Stojković
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a...
What's the difference between “version number” in iTunes Connect, “bundle version”, “bundle version
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edited Feb 21 '13 at 8:03
answered Sep 2 '11 at 8:58
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How to connect android emulator to the internet
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edited Nov 28 '11 at 14:33
artifex
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answered Apr 24 '10 ...
Differences between “BEGIN RSA PRIVATE KEY” and “BEGIN PRIVATE KEY”
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See https://polarssl.org/kb/cryptography/asn1-key-structures-in-der-and-pem (search the page fo...
How do the post increment (i++) and pre increment (++i) operators work in Java?
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Does this help?
a = 5;
i=++a + ++a + a++; =>
i=6 + 7 + 7; (a=8)
a = 5;
i=a++ + ++a + ++a; =>
i=5 + 7 + 8; (a=8)
The main point is that ++a increments the value and immediately returns it.
a++ also increments the value (in the background) but returns unchanged value of the varia...
Moving decimal places over in a double
...ut.println(new BigDecimal(x));
prints:
0.100000000000000005551115123125782702118158340454101562
12.339999999999999857891452847979962825775146484375
In short, rounding is unavoidable for sensible answers in floating point whether you are doing this explicitly or not.
Note: x / 100 and x * 0.0...