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Get a pixel from HTML Canvas?
...geData object for the whole image (0,0,width,height), and then compute the index using idx = (y * width + x) * 4 like Georg's answer. However, don't forget to refresh that cached object every time the image changes.
– noio
Oct 28 '13 at 12:30
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What is the reason for having '//' in Python? [duplicate]
...ing-point division, and added the // operator to do integer division (i.e. quotient without remainder); whereas in Python 2, the / operator was simply integer division, unless one of the operands was already a floating point number.
In Python 2.X:
>>> 10/3
3
>>> # to get a floati...
php $_POST array empty upon form submission
... There were no fault with URL, however it was pointing to a folder without index.php in URL and I was checking POST at index.php.
Here I doubted the redirection from / to /index.php causes POST data to be lost and tested URL with appending index.php to the URL.
That Worked.
Posted it here so some...
Xcode source automatic formatting
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@RyanAngilly Notice the year this question was answered. Many things have changed with Xcode since then. ;-)
– Marc W
Mar 1 '13 at 15:38
1
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Last segment of URL in jquery
.... Hence the last segment is the last element of both the url and the subsequently created array.
– stephen
Feb 22 '16 at 23:46
11
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pandas read_csv and filter columns with usecols
...andas.read_csv when I filter the columns with usecols and use multiple indexes.
5 Answers
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How do I shuffle an array in Swift?
...rom: c, to: 1, by: -1)) {
// Change `Int` in the next line to `IndexDistance` in < Swift 4.1
let d: Int = numericCast(arc4random_uniform(numericCast(unshuffledCount)))
let i = index(firstUnshuffled, offsetBy: d)
swapAt(firstUnshuffled, i)
}
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How to delete duplicates on a MySQL table?
...NORE TABLE `table_name` ADD UNIQUE (title, SID)
note: only works well if index fits in memory
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Extract month and year from a zoo::yearmon object
... as.yearmon("Mar 2012", "%b %Y")
Then we can extract the date parts as required:
> format(date1, "%b") ## Month, char, abbreviated
[1] "Mar"
> format(date1, "%Y") ## Year with century
[1] "2012"
> format(date1, "%m") ## numeric month
[1] "03"
These are returned as characters. Where app...
Using OpenGl with C#? [closed]
...ss RGB values as separate args
Gl.glVertex3f(0, 1, 0); // explicit "f" qualifier
This makes for harder porting but is incredibly nice to use.
As a bonus it provides font rendering, texture loading, input handling, audio, math...
Update 18th January 2016: Today the OpenTK maintainer has stepped ...