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How do I check if a list is empty?
...st check if the input is empty, and you're using other NumPy features like indexing or math operations, it's probably more efficient (and certainly more common) to force the input to be a NumPy array. There are a few nice functions for doing this quickly — most importantly numpy.asarray. This t...
Given a number, find the next higher number which has the exact same set of digits as the original n
...allest digit larger than x" is y. can we just swap x and y, then reverse x.index+1 -> end?
– Kent
Feb 21 '12 at 9:46
8
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ElasticSearch - Return Unique Values
...t_method] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead."
}
]}
In that case, you have to add "KEYWORD" in the request, like following:
{
"aggs" : {
...
PHP: merge two arrays while keeping keys instead of reindexing?
...
Two arrays can be easily added or union without chaning their original indexing by + operator. This will be very help full in laravel and codeigniter select dropdown.
$empty_option = array(
''=>'Select Option'
);
$option_list = array(
1=>'Red',
...
How do you plot bar charts in gnuplot?
...e neat gnuplot tricks:
Gnuplot has psuedo-columns that can be used as the index to color:
plot 'data.dat' using 1:2:0 with boxes lc variable
Further you can use a function to pick the colors you want:
mycolor(x) = ((x*11244898) + 2851770)
plot 'data.dat' using 1:2:(mycolor($0)) with boxes lc ...
How to unit test an object with database queries
...abases - the best by a long way seems to be SQLite. (http://www.sqlite.org/index.html). It's remarkably simple to set up and use, and allowed us subclass and override GetDatabase() to forward sql to an in-memory database that was created and destroyed for every test performed.
We're still in the e...
Which is the fastest algorithm to find prime numbers?
...fo:
http://primes.utm.edu/prove/prove2_3.html and http://forums.nvidia.com/index.php?showtopic=70483
If you just need a way to generate very big prime numbers and don't care to generate all prime numbers < an integer n, you can use Lucas-Lehmer test to verify Mersenne prime numbers. A Mersenne p...
How to create a release signed apk file using Gradle?
...ate a skeleton signing.properties and after committing issuing "git update-index --assume-unchanged signing.properties". However that prevents futura edits from being committed. Something like the first option sdqali suggests seems even better.
– user672009
Oct...
How do I make JavaScript beep?
... mp3 or wav files into Data URI format:
https://dopiaza.org/tools/datauri/index.php
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Read a zipped file as a pandas DataFrame
... [12]: crime2013
Out[12]:
<class 'pandas.core.frame.DataFrame'>
Int64Index: 24567 entries, 0 to 24566
Data columns (total 15 columns):
CCN 24567 non-null values
REPORTDATETIME 24567 non-null values
SHIFT 24567 non-null valu...