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git: How to ignore all present untracked files?
...le; No. -c marks the beginning of a list of column numbers to cut. And 4- selects the line from column 4 to the end, which cuts columns 1-3. So your cut command actually removes the first 3 characters of each line. If you removed 4 characters from a git status line such as the one for this file he...
How to add 'ON DELETE CASCADE' in ALTER TABLE statement
...ARE
CURSOR consCols (theCons VARCHAR2, theOwner VARCHAR2) IS
select * from user_cons_columns
where constraint_name = theCons and owner = theOwner
order by position;
firstCol BOOLEAN := TRUE;
begin
-- For each constraint
FOR cons IN (sel...
Recursive sub folder search and return files in a list python
...fter the latest downvote, it occurred to me that glob is a better tool for selecting by extension.
import os
from glob import glob
result = [y for x in os.walk(PATH) for y in glob(os.path.join(x[0], '*.txt'))]
Also a generator version
from itertools import chain
result = (chain.from_iterable(glo...
How to use pull to refresh in Swift?
...ring(string: "Pull to refresh")
refreshControl.addTarget(self, action: #selector(self.refresh(_:)), for: .valueChanged)
tableView.addSubview(refreshControl) // not required when using UITableViewController
}
@objc func refresh(_ sender: AnyObject) {
// Code to refresh table view
}
At s...
What is the _snowman param in Ruby on Rails 3 forms for?
...orrectly concatenates the utf8 parameter and its value with the value of a selection option in the form.
– Christer Fernstrom
May 28 '14 at 16:30
add a comment
...
Programmatically change UITextField Keyboard type
...thout the call to reloadInputViews, the keyboard will not change until the selected field (the first responder) loses and regains focus.
A full list of the UIKeyboardType values can be found here, or:
typedef enum : NSInteger {
UIKeyboardTypeDefault,
UIKeyboardTypeASCIICapable,
UIKeybo...
Manipulating an Access database from Java without ODBC
...db");
Statement s = conn.createStatement();
ResultSet rs = s.executeQuery("SELECT [LastName] FROM [Clients]");
while (rs.next()) {
System.out.println(rs.getString(1));
}
Disclosure
At the time of writing this Q&A I had no involvement in or affiliation with the UCanAccess project; I ju...
How can I catch a ctrl-c event?
...printf("Caught signal %d\n",s);
exit(1);
}
int main(int argc,char** argv)
{
struct sigaction sigIntHandler;
sigIntHandler.sa_handler = my_handler;
sigemptyset(&sigIntHandler.sa_mask);
sigIntHandler.sa_flags = 0;
sigaction(SIGINT, &sigIntHandler, NULL);
pau...
Can I implement an autonomous `self` member type in C++?
...e argument list is augmented by a contrived object and overload resolution selects one of the non-static member functions of T, the call is ill-formed.
Inside a static member function, this may not appear, but it still exists.
However, per the comments, inside a static member function, the transf...
Is there a NumPy function to return the first index of something in an array?
...st element. Note also that where and nonzero return arrays, so you need to select the first element to get the index.
In [71]: np.argmax(a==2)
Out[71]: 2
In [72]: np.where(a==2)
Out[72]: (array([2], dtype=int64),)
In [73]: np.nonzero(a==2)
Out[73]: (array([2], dtype=int64),)
Time comparison
Ju...