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ElasticSearch - Return Unique Values
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You can use the terms aggregation.
{
"size": 0,
"aggs" : {
"langs" : {
"terms" : { "field" : "language", "size" : 500 }
}
}}
A search will return something like:
{
"took" : 16,
"timed_out" : false,
"_shards" : {
"total" : 2,
"successful" : 2,
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Compute a confidence interval from sample data
...y as np
import scipy.stats
def mean_confidence_interval(data, confidence=0.95):
a = 1.0 * np.array(data)
n = len(a)
m, se = np.mean(a), scipy.stats.sem(a)
h = se * scipy.stats.t.ppf((1 + confidence) / 2., n-1)
return m, m-h, m+h
you can calculate like this way.
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Save modifications in place with awk
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150
In GNU Awk 4.1.0 (released 2013) and later, it has the option of "inplace" file editing:
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Getting the first and last day of a month, using a given DateTime object
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edited Feb 29 at 23:04
Fyodor Soikin
59.5k66 gold badges9898 silver badges140140 bronze badges
ans...
Getting a map() to return a list in Python 3.x
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802
Do this:
list(map(chr,[66,53,0,94]))
In Python 3+, many processes that iterate over iterable...
Sort a text file by line length including spaces
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Answer
cat testfile | awk '{ print length, $0 }' | sort -n -s | cut -d" " -f2-
Or, to do your original (perhaps unintentional) sub-sorting of any equal-length lines:
cat testfile | awk '{ print length, $0 }' | sort -n | cut -d" " -f2-
In both cases, we have solved...
Datatype for storing ip address in SQL Server
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130
The technically correct way to store IPv4 is binary(4), since that is what it actually is (no, n...
Remove characters from NSString?
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280
You could use:
NSString *stringWithoutSpaces = [myString
stringByReplacingOccurrencesOfStri...
How to manually install an artifact in Maven 2?
...javax.transaction \
-DartifactId=jta \
-Dpackaging=jar \
-Dversion=1.0.1B \
-Dfile=jta-1.0.1B.jar \
-DgeneratePom=true
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Extracting Nupkg files using command line
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106
You can also use the NuGet command line, by specifying a local host as part of an install. For ...