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How can bcrypt have built-in salts?
...$2a$10$vI8aWBnW3fID.ZQ4/zo1G.q1lRps.9cGLcZEiGDMVr5yUP1KUOYTa
This is actually three fields, delimited by "$":
2a identifies the bcrypt algorithm version that was used.
10 is the cost factor; 210 iterations of the key derivation function are used (which is not enough, by the way. I'd recommend a ...
How to select rows with one or more nulls from a pandas DataFrame without listing columns explicitly
...s..]
You can use isnull and any to build a boolean Series and use that to index into your frame:
>>> df = pd.DataFrame([range(3), [0, np.NaN, 0], [0, 0, np.NaN], range(3), range(3)])
>>> df.isnull()
0 1 2
0 False False False
1 False True False
2 False Fa...
In Markdown, what is the best way to link to a fragment of a page, i.e. #some_id?
...
+1, thanks. It's sad it doesn't do this automatically. Very wet IMHO.
– Marc-André Lafortune
Feb 26 '13 at 20:31
...
How Do I Take a Screen Shot of a UIView?
...method.
Reference: https://developer.apple.com/library/content/qa/qa1817/_index.html
UPDATE FOR SWIFT: An extension that does the same:
extension UIView {
func pb_takeSnapshot() -> UIImage {
UIGraphicsBeginImageContextWithOptions(bounds.size, false, UIScreen.mainScreen().scale)
...
How to split/partition a dataset into training and test datasets for, e.g., cross validation?
...ation import StratifiedKFold
skf = StratifiedKFold(y, n_folds=5)
for train_index, test_index in skf:
print("TRAIN:", train_index, "TEST:", test_index)
X_train, X_test = X[train_index], X[test_index]
y_train, y_test = y[train_index], y[test_index]
...
How do I search within an array of hashes by hash values in ruby?
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Is it possible to return the index of where this was found in the original array of hashes?
– Ian Warner
Oct 18 '16 at 16:42
1
...
How can I reverse a NSArray in Objective-C?
...j = [self count] - 1;
while (i < j) {
[self exchangeObjectAtIndex:i
withObjectAtIndex:j];
i++;
j--;
}
}
@end
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...
Best Practices: Salting & peppering passwords?
...e provable and make sense in order for it to be considered secure. Additionally, it has to be implementable in a maintainable way. The most secure system that can't be maintained is considered insecure (because if any part of that security breaks down, the entire system falls apart).
And peppers fi...
rails + MySQL on OSX: Library not loaded: libmysqlclient.18.dylib
...lient.18.dylib /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/local/bin/indexer
sudo install_name_tool -change libmysqlclient.18.dylib /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/local/bin/search
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Git push error '[remote rejected] master -> master (branch is currently checked out)'
... operates only on the remote Git repository, it doesn't have access to the index and working tree. So, if allowed, a push on the checked-out branch would change the HEAD to be inconsistent with the index and working tree on the remote repository.
This would make it very easy to accidentally commit ...