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Test for existence of nested JavaScript object key
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Update
Looks like lodash has added _.get for all your nested property getting needs.
_.get(countries, 'greece.sparta.playwright')
https://lodash.com/docs#get
Previous answer
lodash users may enjoy lodash.contrib which has a couple methods that mitigate ...
Is there a way to chain multiple value converters in XAML?
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Mal RossMal Ross
4,21544 gold badges3131 silver badges4545 bronze badges
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Finding a branch point with Git?
...gill
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10
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.rar, .zip files MIME Type
...ikipedia.org/wiki/RAR
if ($ext == '.rar' and bin2hex($bytes) == '526172211a0700') {
return TRUE;
}
// ZIP magic number: none, though PK\003\004, PK\005\006 (empty archive),
// or PK\007\008 (spanned archive) are common.
// http://en.wikipedia.org/wiki/ZIP_(file_format)
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Find UNC path of a network drive?
... Lachlan DowdingLachlan Dowding
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12
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What is the difference between range and xrange functions in Python 2.X?
... Nickolay
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answered Sep 18 '08 at 17:55
CharlesCharles
8,40211 gold ba...
How to clear MemoryCache?
...y encounter disposing of the default instance: stackoverflow.com/a/8043556/216440 . To quote: "The state of the cache is set to indicate that the cache is disposed. Any attempt to call public caching methods that change the state of the cache, such as methods that add, remove, or retrieve cache ent...
How can I count the occurrences of a list item?
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edited Nov 15 '17 at 21:48
user2357112 supports Monica
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Benchmarking (python vs. c++ using BLAS) and (numpy)
....1
Dot product benchmark
Code:
import numpy as np
a = np.random.random_sample((size,size))
b = np.random.random_sample((size,size))
%timeit np.dot(a,b)
Results:
System | size = 1000 | size = 2000 | size = 3000 |
netlib BLAS | 1350 ms | 10900 ms | 39200 ms | ...
Queries vs. Filters
... query
Query hello sam (using keyword must)
curl localhost:9200/myindex/_search?pretty -d '
{
"query": { "bool": { "must": { "match": { "msg": "hello sam" }}}}
}'
Document "Hello world! I am Sam." is assigned a higher score than "Hello world!", because the former matches both words in the qu...