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In MySQL, can I copy one row to insert into the same table?
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190
I used Leonard Challis's technique with a few changes:
CREATE TEMPORARY TABLE tmptable_1 SELE...
What is Unicode, UTF-8, UTF-16?
What's the basis for Unicode and why the need for UTF-8 or UTF-16?
I have researched this on Google and searched here as well but it's not clear to me.
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Can git operate in “silent mode”?
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cat $stderr >&2
rm -f $stdout $stderr
exit 1
fi
rm -f $stdout $stderr
}
This will suppress stdout and stderr, unless the git command fails. It's not pretty; in fact the stdout file is ignored and it should just redirect that to /dev/null. Works, though. And...
Remove non-utf8 characters from string
...tring, which are not displaying properly. Characters are like this 0x97 0x61 0x6C 0x6F (hex representation)
18 Answers
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Sort Go map values by keys
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158
The Go blog: Go maps in action has an excellent explanation.
When iterating over a map with a...
How to pause for specific amount of time? (Excel/VBA)
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15 Answers
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How to determine one year from now in Javascript
...etFullYear() instead of getYear(). getYear() returns the actual year minus 1900 (and so is fairly useless).
Thus a date marking exactly one year from the present moment would be:
var oneYearFromNow = new Date();
oneYearFromNow.setFullYear(oneYearFromNow.getFullYear() + 1);
Note that the date wil...
Android Studio: how to attach Android SDK sources?
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16 Answers
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return query based on date
...ter a given date:
db.gpsdatas.find({"createdAt" : { $gte : new ISODate("2012-01-12T20:15:31Z") }});
I'm using $gte (greater than or equals), because this is often used for date-only queries, where the time component is 00:00:00.
If you really want to find a date that equals another date, the syn...
Float vs Decimal in ActiveRecord
...esent a Float. It's like a scientific notation for binary (something like +1.43*10^2). Because of that, it is impossible to store fractions and decimals in Float exactly.
That's why there is a Decimal format. If you do this:
irb:001:0> "%.47f" % (1.0/10)
=> "0.100000000000000005551115123125...