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Sort rows in data.table in decreasing order on string key `order(-x,v)` gives error on data.table 1.
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edited Jun 20 at 9:12
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answered Sep 10 '12 at 14:41
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How to format a floating number to fixed width in Python
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for x in numbers:
print "{:10.4f}".format(x)
prints
23.2300
0.1233
1.0000
4.2230
9887.2000
The format specifier inside the curly braces follows the Python format string syntax. Specifically, in this case, it consists of the followin...
In Python, how do you convert seconds since epoch to a `datetime` object?
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420
datetime.datetime.fromtimestamp will do, if you know the time zone, you could produce the same o...
How can I find the latitude and longitude from address?
...ddress==null) {
return null;
}
Address location=address.get(0);
location.getLatitude();
location.getLongitude();
p1 = new GeoPoint((double) (location.getLatitude() * 1E6),
(double) (location.getLongitude() * 1E6));
return p1;
}
}
strAddres...
What happened to “Always refresh from server” in IE11 developer tools?
...e the "Always refresh from server" feature of the developer tools in IE 8-10?
5 Answers
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How to combine date from one field with time from another field - MS SQL Server
...Date part of your Time column is also always zero (base date: January 1, 1900)
Adding them returns the correct result.
SELECT Combined = MyDate + MyTime FROM MyTable
Rationale (kudos to ErikE/dnolan)
It works like this due to the way the date is stored as two 4-byte
Integers with the left...
What is The difference between ListBox and ListView
...homas LevesqueThomas Levesque
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Why use double indirection? or Why use pointers to pointers?
...gt;
#include <string.h>
int wordsinsentence(char **x) {
int w = 0;
while (*x) {
w += 1;
x++;
}
return w;
}
int wordsinmono(char ***x) {
int w = 0;
while (*x) {
w += wordsinsentence(*x);
x++;
}
return w;
}
int wordsinbio(char **...
What's best SQL datatype for storing JSON string?
...Certainly NOT:
TEXT, NTEXT: those types are deprecated as of SQL Server 2005 and should not be used for new development. Use VARCHAR(MAX) or NVARCHAR(MAX) instead
IMAGE, VARBINARY(MAX) : IMAGE is deprecated just like TEXT/NTEXT, and there's really no point in storing a text string into a binary co...
displayname attribute vs display attribute
... Pragmateek
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answered May 24 '11 at 12:27
SpockSpock
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