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JavaScript by reference vs. by value [duplicate]
I'm looking for some good comprehensive reading material on when JavaScript passes something by value and when by reference and when modifying a passed item affects the value outside a function and when not. I'm also interested in when assigning to another variable is by reference vs. by value and ...
django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: No module named MySQLdb
...le trying to connect to database for mysql. I have also given the database settings that i have used.
22 Answers
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ASP.Net MVC: How to display a byte array image from model
...lass Item
{
[Key]
[ScaffoldColumn(false)]
public int ID { get; set; }
public String Name { get; set; }
public byte[] InternalImage { get; set; } //Stored as byte array in the database.
}
Sample Method in the Controller:
public async Task<ActionResult> RenderImage(int i...
Select second last element with css
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Parallel.ForEach() vs. foreach(IEnumerable.AsParallel())
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How do you run multiple programs in parallel from a bash script?
...d process to complete before moving forward with the execution of the next set of commands. #!/usr/bin/env bash ARRAY='cat bat rat...
How to use MySQL DECIMAL?
...lanation to give you an idea of how it works.
Suppose that your column is set to be DECIMAL(13,4). This means that the column will have a total size of 13 digits where 4 of these will be used for precision representation.
So, in summary, for that column you would have a max value of: 999999999.999...
TypeError: got multiple values for argument
...ord arguments.
In my case it was because the argument order of the Pandas set_axis function changed between 0.20 and 0.22:
0.20: DataFrame.set_axis(axis, labels)
0.22: DataFrame.set_axis(labels, axis=0, inplace=None)
Using the commonly found examples for set_axis results in this confusing error,...
Scraping html tables into R data frames using the XML package
...ng a plain text table out of an HTML PRE element using htmlParse(), getNodeSet(), textConnection() and read.table()
– Dave X
Aug 7 '13 at 13:59
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How to get a pixel's x,y coordinate color from an image?
... 0, img.width, img.height);
After that, when a user clicks, use event.offsetX and event.offsetY to get the position. This can then be used to acquire the pixel:
var pixelData = canvas.getContext('2d').getImageData(event.offsetX, event.offsetY, 1, 1).data;
Because you are only grabbing one pixe...