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Django set default form values
... value when calling form constructor:
form = JournalForm(initial={'tank': 123})
or set the value in the form definition:
tank = forms.IntegerField(widget=forms.HiddenInput(), initial=123)
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SQL order string as number
... | 0 /* the string does not contain a number, so the result is 0 */
'123miles' | 123
'$123' | 0 /* the left side of the string does not start with a number */
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Resizing UITableView to fit content
...table view in Storyboard to IntrinsicTableView: screenshot: http://joxi.ru/a2XEENpsyBWq0A
3) Set the heightConstraint to your table view
4) drag the IBoutlet of your table to your ViewController
5) drag the IBoutlet of your table's height constraint to your ViewController
6) add this method into...
How can I view array structure in JavaScript with alert()?
...
123
A very basic approach is alert(arrayObj.join('\n')), which will display each array element in ...
How to prevent browser to invoke basic auth popup and handle 401 error using Jquery?
... relies on the mod_headers module being installed.
(On Debian/Ubuntu, sudo a2enmod headers and restart Apache)
<Location />
# Make sure that if it is an XHR request,
# we don't send back basic authentication header.
# This is to prevent the browser from...
Can iterators be reset in Python?
...n iterator
from functools import partial
iter_clos = partial(get_iter, a1, a2)
This seems to avoid the caching that tee (n copies) or list (1 copy) would need to do
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How can Bash execute a command in a different directory context?
... Using a subshell is a much better solution
– josh123a123
Apr 19 '16 at 14:31
For scripting, a subshell is probably...
throwing exceptions out of a destructor
...noexcept(false) so the code keeps its original meaning.
// Post C++11 destructors are by default `noexcept(true)` and
// this will (by default) call terminate if an exception is
// escapes the destructor.
//
// But this example is designed to show that termina...
Sequelize.js delete query?
...'s a destroy() method you can call on a record, for example:
Project.find(123).on('success', function(project) {
project.destroy().on('success', function(u) {
if (u && u.deletedAt) {
// successfully deleted the project
}
})
})
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Convert Long into Integer
...
Here are three ways to do it:
Long l = 123L;
Integer correctButComplicated = Integer.valueOf(l.intValue());
Integer withBoxing = l.intValue();
Integer terrible = (int) (long) l;
All three versions generate almost identical byte code:
0 ldc2_w <Long 123>...