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Removing viewcontrollers from navigation stack
...e this code and enjoy:
NSMutableArray *navigationArray = [[NSMutableArray alloc] initWithArray: self.navigationController.viewControllers];
// [navigationArray removeAllObjects]; // This is just for remove all view controller from navigation stack.
[navigationArray removeObjectAtIndex: 2]; // ...
Concatenating two one-dimensional NumPy arrays
...smetic than substantial, but it's good when the API is consistent (e.g. if all the numpy functions that take variable length argument lists require explicit sequences).
– Jim K.
Aug 24 '16 at 20:43
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Pip freeze vs. pip list
...you are using a virtualenv, you can specify a requirements.txt file to install all the dependencies.
A typical usage:
$ pip install -r requirements.txt
The packages need to be in a specific format for pip to understand, which is
feedparser==5.1.3
wsgiref==0.1.2
django==1.4.2
...
That is the ...
Remove blank lines with grep
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Try the following:
grep -v -e '^$' foo.txt
The -e option allows regex patterns for matching.
The single quotes around ^$ makes it work for Cshell. Other shells will be happy with either single or double quotes.
UPDATE: This works for me for a file with blank lines or "all white ...
Merging without whitespace conflicts
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git merge -Xignore-all-space
Or (more precise)
git merge -Xignore-space-change
should be enough to ignore all space related conflicts during the merge.
See git diff:
--ignore-space-change
Ignore changes in amount of whitespace.
T...
Regex to validate date format dd/mm/yyyy
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Edit February 14th 2019: I've removed a comma that was in the regex which allowed dates like 29-0,-11
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How to enable cross-origin resource sharing (CORS) in the express.js framework on node.js
...tatic files from a public directory. I'm using the express.js and am not really sure how to allow cross-domain scripting ( Access-Control-Allow-Origin: * ).
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PHP Regex to check date is in YYYY-MM-DD format
...ing to be more fuss -- and February 29 cannot be validated with a regex at all.
The drawback of this approach is that you have to be very careful to reject all possible "bad" inputs while not emitting a notice under any circumstances. Here's how:
explode is limited to return 3 tokens (so that if ...
Why does Python pep-8 strongly recommend spaces over tabs for indentation?
...andard library in the main Python distribution.
The intention is to make all code that goes in the official python distribution consistently formatted (I hope we can agree that this is universally a Good Thing™).
Since the decision between spaces and tabs for an individual programmer is a) real...
Disable/turn off inherited CSS3 transitions
...out transitions.
Edited to note that @Frédéric Hamidi's answer, using all (for Opera, at least) is far more concise than listing out each individual property-name that you don't want to have transition.
Updated JS Fiddle demo, showing the use of all in Opera: -o-transition: all 0 none, followi...