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In SQL, how can you “group by” in ranges?
...Here are the correct versions of both of them on SQL Server 2000.
select t.range as [score range], count(*) as [number of occurences]
from (
select case
when score between 0 and 9 then ' 0- 9'
when score between 10 and 19 then '10-19'
else '20-99' end as range
from scores) t
group ...
How to scale down a range of numbers with a known min and max value
So I am trying to figure out how to take a range of numbers and scale the values down to fit a range. The reason for wanting to do this is that I am trying to draw ellipses in a java swing jpanel. I want the height and width of each ellipse to be in a range of say 1-30. I have methods that find t...
Java: Equivalent of Python's range(int, int)?
Does Java have an equivalent to Python's range(int, int) method?
13 Answers
13
...
What makes Lisp macros so special?
... a simple syntax for a common case. The line
divisibleByTwo = [x for x in range(10) if x % 2 == 0]
yields a list containing all even numbers between 0 and 9. Back in the Python 1.5 days there was no such syntax; you'd use something more like this:
divisibleByTwo = []
for x in range( 10 ):
if...
Getting indices of True values in a boolean list
...:
>>> from itertools import compress
>>> list(compress(xrange(len(t)), t))
[4, 5, 7]
>>> t = t*1000
>>> %timeit [i for i, x in enumerate(t) if x]
100 loops, best of 3: 2.55 ms per loop
>>> %timeit list(compress(xrange(len(t)), t))
1000 loops, best of 3: ...
Vim: Close All Buffers But This One
...
I used this for a long time, but now I get E16: Invalid range because some of the buffers in the range don't actually exist. It was ignoring that until recently.
– Jon
Dec 10 '15 at 9:34
...
Google breakpad stackwalker无法加载符号 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...< 2:
print ("Please input binary files.")
sys.exit(2)
for i in range(1,len(sys.argv)):
binary = sys.argv[i]
outputFile = basename(binary) + ".sym"
command = '{0} {1} > {2}'.format("dump_syms",binary,outputFile)
print ('--> Running {0}'.format(command) )
os.system(...
How to convert a column number (e.g. 127) into an Excel column (e.g. AA)
... else:
return chr(idx + ord('A') - 1) + result
for i in xrange(1, 1024):
print "%4d : %s" % (i, ColIdxToXlName(i))
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Converting NSString to NSDate (and back again)
...eMatches(
in: dateString,
options: [],
range: NSRange(location: 0, length: dateString.utf16.count),
using:
{
(eachResult, _, _) in
// Lookup matches.
matchedDate = eachResult?.date
...
What is an idiomatic way of representing enums in Go?
...
Go has no concept of numeric subrange types, like e.g. Pascal's has, so Ord(Base) is not limited to 0..3 but has the same limits as its underlying numeric type. It's a language design choice, compromise between safety and performance. Consider "safe" run ti...