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Build tree array from flat array in javascript
... below )
Here it is:
const createDataTree = dataset => {
let hashTable = Object.create(null)
dataset.forEach( aData => hashTable[aData.ID] = { ...aData, childNodes : [] } )
let dataTree = []
dataset.forEach( aData => {
if( aData.parentID ) hashTable[aData.parentID]....
Generate random numbers following a normal distribution in C/C++
... algorithm has better performance than the others. However, it does not suitable for SIMD parallelism as it needs table lookup and branches. Box-Muller with SSE2/AVX instruction set is much faster (x1.79, x2.99) than non-SIMD version of ziggurat algorithm.
Therefore, I will suggest using Box-Muller...
Is there any difference between a GUID and a UUID?
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The binary encoding table embedded in the answer is very useful. Tnx
– Luciano
Mar 3 '16 at 18:37
2
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For loop for HTMLCollection elements
...erable performance or memory drawbacks. For example if I need to iterate a table row's cells I use a [...row.cells].forEach instead of doing a row.querySelectorAll('td')
– Mojimi
Oct 15 '19 at 13:18
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How do I return rows with a specific value first?
I want my query to return the rows of the table where a column contains a specific value first, and then return the rest of the rows alphabetized.
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Rails extending ActiveRecord::Base
...like this idea because is a standard way of doing it but... I get an error Table 'moboolo_development.abstract_models' doesn't exist: SHOW FIELDS FROM abstract_models. Where should I put it?
– xpepermint
Feb 25 '10 at 7:59
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Virtual member call in a constructor
...y are constructed, but start out as the most derived type, with the method table being for the most derived type. This means that virtual method calls always run on the most derived type.
When you combine these two facts you are left with the problem that if you make a virtual method call in a cons...
BasicHttpBinding vs WsHttpBinding vs WebHttpBinding
...s they travel across the network
For an in-depth comparison (including a table and code examples) between the two check out this codeproject article: Differences between BasicHttpBinding and WsHttpBinding
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How to disable text selection highlighting
... supported by Chrome, Edge, Opera and Firefox */
}
<p>
Selectable text.
</p>
<p class="noselect">
Unselectable text.
</p>
Note that user-select is in standardization process (currently in a W3C working draft). It is not guaranteed to work everywhere and ther...
Count cells that contain any text
... available functions for future reference https://support.google.com/drive/table/25273?hl=en.
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