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python tuple to dict
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+1 Beautiful!, I had to try it with zip dict(zip(*zip(*t)[::-1])). This is slower, uglier and using way more memory..likely 3x.
– kevpie
Apr 28 '11 at 1:35
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Running multiple commands with xargs
...ell-like (but not quite shell-compatible) parsing to the stream it reads. (If you don't have GNU xargs, you can use tr '\n' '\0' <a.txt | xargs -0 ... to get line-oriented reading without -d).
The _ is a placeholder for $0, such that other data values added by xargs become $1 and onward, which ha...
Check if a key exists inside a json object
The above is the JSON object I'm dealing with. I want to check if the 'merchant_id' key exists. I tried the below code, but it's not working. Any way to achieve it?
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Update a local branch with the changes from a tracked remote branch
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)
git branch -f --track my_local_branch origin/my_remote_branch
# OR (if my_local_branch is currently checked out):
$ git branch --set-upstream-to my_local_branch origin/my_remote_branch
(git branch -f --track won't work if the branch is checked out: use the second command git branch --set-ups...
How can I get System variable value in Java?
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To clarify, system variables are the same as environment variables. User environment variables are set per user and are different whenever a different user logs in. System wide environment variables are the same no matter what user ...
How to disable back swipe gesture in UINavigationController on iOS 7
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I found a solution:
Objective-C:
if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
self.navigationController.interactivePopGestureRecognizer.enabled = NO;
}
Swift 3+:
self.navigationController?.interactive...
Returning IEnumerable vs. IQueryable
What is the difference between returning IQueryable<T> vs. IEnumerable<T> , when should one be preferred over the other?
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Non-static method requires a target
... lambda which is a null-reference at run-time. In your case, I would check if your variable calculationViewModel is a null-reference.
Something like:
public ActionResult MNPurchase()
{
CalculationViewModel calculationViewModel = (CalculationViewModel)TempData["calculationViewModel"];
if (...
How to change column datatype from character to numeric in PostgreSQL 8.4
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You can try using USING:
The optional USING clause specifies how to compute the new column value from the old; if omitted, the default conversion is the same as an assignment cast from old data type to new. A USING clause must be provided if there is no implicit or assignment cas...
LEFT JOIN vs. LEFT OUTER JOIN in SQL Server
What is the difference between LEFT JOIN and LEFT OUTER JOIN ?
12 Answers
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