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How to modify list entries during for loop?
...an assignment of it to replace the original, although it does require more indexing operations.
Caution: Although you can modify entries this way, you can't change the number of items in the list without risking the chance of encountering problems.
Here's an example of what I mean—deleting an e...
Pass Additional ViewData to a Strongly-Typed Partial View
... "ProductImageForm",
image,
new ViewDataDictionary { { "index", index } }
);
Note that this will override the default ViewData that all your other Views have by default. If you are adding anything to ViewData, it will not be in this new dictionary that you're passing to your p...
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...
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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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)
}
...
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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MySQL vs MongoDB 1000 reads
... lately. I had a table called posts in MySQL with about 20 million records indexed only on a field called 'id'.
7 Answers
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How to determine the first and last iteration in a foreach loop?
...more simplified version of the above and presuming you're not using custom indexes...
$len = count($array);
foreach ($array as $index => $item) {
if ($index == 0) {
// first
} else if ($index == $len - 1) {
// last
}
}
Version 2 - Because I have come to loathe using...
Git SVN error: a Git process crashed in the repository earlier
...
The file in question is likely .git/index.lock and it should be safe to just remove it if you have no other git processes running. Make sure a git-svn command isn't hanging.
PS My usual approach to fixing git-svn problems is to make a fresh pull of the repos...