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How can I select item with class within a DIV?
...we specify the tagname along with class name, it will first use getElementsByTagName and then look for class name which iw definately faster and still using the native method to do the first level sorting. Anways it is negligible if there are not many elements to be selected.
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Elasticsearch query to return all records
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scan does not provide any benefits over a regular scroll request sorted by _doc. link to elastic docs (spotted by @christophe-roussy)
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Rails 4 - Strong Parameters - Nested Objects
...sted object within an array. In your case it would be
Update as suggested by @RafaelOliveira
params.require(:measurement)
.permit(:name, :groundtruth => [:type, :coordinates => []])
On the other hand if you want nested of multiple objects then you wrap it inside a hash… like this
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Gson: How to exclude specific fields from Serialization without annotations
...with custom exclusion strategies.
The only built-in way to use @Expose is by setting GsonBuilder.excludeFieldsWithoutExposeAnnotation(), but as the name indicates, fields without an explicit @Expose are ignored. As I only had a few fields I wanted to exclude, I found the prospect of adding the anno...
MongoDB with redis
... of MongoDB for main persistent data, and from the extra features provided by Redis (low latency, item expiration, queues, pub/sub, atomic blocks, etc ...). It is indeed a good combination.
Please note you should never run a Redis and MongoDB server on the same machine. MongoDB memory is designed t...
How to wait until an element exists?
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maybe you should mention how it works: it works by asking every 500 ms if the element exists (using a window.setInterval). I don't know if the MutationObserver answer works by polling as well...
– sports
Mar 30 '15 at 21:18
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C#: How to convert a list of objects to a list of a single property of that object?
...tring> orderedNames = people.Select(person => person.FirstName).OrderBy(name => name).ToList();
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How to set the value to a cell in Google Sheets using Apps Script?
...answered Jul 4 '12 at 19:27
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How to install Android SDK Build Tools on the command line?
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By default, the SDK Manager from the command line does not include the build tools in the list. They're in the "obsolete" category. To see all available downloads, use
android list sdk --all
And then to get one of the p...
Create JSON-object the correct way
...ith "{}", you better make sure to force json_encode() to encode as object, by passing the JSON_FORCE_OBJECT constant.
$post_data = json_encode(array('item' => $post_data), JSON_FORCE_OBJECT);
"{}" brackets specify an object and "[]" are used for arrays according to JSON specification.
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